GE
Data Sheet
CP2500DC54PE Compact Power Line DC/DC Converter
Input: -40 to -72Vdc; Outputs: ±54 Vdc @ 2500W; 5 Vdc @ 4W
Features
• Compact 1-RU form factor providing 22 W/in3
• Input Current < 75A at 40 Vdc input
• Programmable output voltage from 44V to 58 Vdc,
• Output defaulted to 54V
• RS4851 and PMBus compliant dual I2C serial bus communications
• Designed to IEEE802.3af Compliance, 2250 output*** isolation to
chassis/signals for POE applications. (see ordering info)
Applications
• 48Vdc distributed power architectures
• Power over Ethernet
• Routers/Switches
• VoIP/Soft Switches
• LAN/WAN/MAN applications
• File servers
• Indoor wireless
• Telecommunications equipment
• Enterprise Networks
• SAN/NAS/iSCSI applications
• Advanced workstations
•
•
•
•
DC Output over-voltage and over-current protection
•
•
•
•
Remote ON/OFF
•
•
•
•
CE mark meets 2006/95/EC directive §
DC Input over-voltage and under-voltage protection
Over-temperature warning and protection
Redundant, parallel operation with active load sharing and isolated
redundant +5V Aux power, isolated signals and I2C communications
Hot insertion/removal (hot plug)
Four front panel LED indicators
UL* Recognized to UL60950-1, CAN/ CSA† C22.2 No. 60950-1, and
VDE‡ 0805-1 Licensed to IEC60950-1
Internal variable-speed fan control
RoHS 6 compliant
POE compliant to IEEE802.3af
Description
The CP2500DC54PE DC/DC Converter, [also called a Power Entry Module (PEM)] in the Compact Power Line
platform is specifically designed to operate as an integral part of a complete distributed power system. Highdensity, front-to-back airflow is designed for minimal space utilization and is highly expandable for future growth.
This PEM complements the CP2500AC54TE rectifier, thus providing comprehensive solutions for systems
connected either to commercial ac mains, 48/60Vdc power plants or telecom central offices. The standard
product is provided with many features including PoE isolation, RS485 and dual-redundant I2C communications
busses that allow it to be used in a broad range of applications. Feature set flexibility makes this Power Entry
Module an excellent choice for applications requiring modular dc-to-dc bulk intermediate voltages, such as in
distributed power.
*
†
‡
§
**
UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
This product is intended for integration into end-user equipment. All the required procedures for CE marking of end-user equipment should be followed. (The CE mark is placed on selected products.)
ISO is a registered trademark of the International Organization of Standards.
1 Introduced in 2011
November 22, 2019
•
©2013 General Electric Company. All rights reserved.
Page 1
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Electrical Specifications
Input
Parameter
Operating Voltage
Low Input Shutdown of Main
output
Input Turn-ON of both Outputs
Reverse Input Voltage
Idling Power
Min
Typ
Max
Units
-72
Vdc
-38.5
-39
-39.5
Vdc
-43
-43.5
-44
Vdc
-40
Notes
The module shall not be damaged
Output OFF
Output ON
35
60
W
5Vdc output at no-load
Both outputs at no-load
Input Current
75
Adc
At input voltages > 40Vdc
Cold Start Inrush Current
100
Adc
Measured at 25C for all line conditions. Does not include Xcapacitor charging spike
92
88
Efficiency
%
Holdup Time
6
Ride Through
6
ms
ms
25
Input Capacitance
From 75% to 100% of full load
For loads > 25% of full load
Minimum Vin = 48Vdc, output at ½ Full Load, output can
droop down to -40Vdc
F
Main Output
Parameter
Min
Typ
Maximum Output Power
Output Voltage Setpoint
Max
Units
2500
W
54
Notes
At voltages > 54Vdc
Vdc
Output floats with respect to frame ground.
Resets to factory setting if power is removed
Voltage Regulation
Set Point at 50% FL
Set Point Tolerance
Set Point Regulation
Droop Regulation
Droop Accuracy
-0.5
-1
-5
5
Vdc
%
%
Vdc
%
Output Voltage Range
44
58
Vdc
Output Current
0.1
46.3
A
At 54Vdc. Below 0.1A the module meets its regulation
requirements.
0.5
A
Isolation function provided
54
0.5
1
1
Reverse (sink) output current
All conditions (temp, line, drift)
Linear from 1 to 39 A.
All conditions (temp, line, drift)
Set either by I2C, or analog margining.
Active Current Share
-5
5
%FL
Single-wire connection. Loads > 25%FL
Passive Current Share
-15
+15
%FL
Between modules without the single wire connection.
Loads > 25%FL
250
500
mVrms
mVpk-pk
5,000
F
Output Ripple (5 to 20MHz)
RMS
Peak-to-Peak
External Bulk Load Capacitance
0
Measured with 20MHz bandwidth under any condition of
loading. Minimum load is 1A.
External capacitance can be increased but the power
supply will not meet its turn-ON rise time requirement.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Electrical Specifications (continued)
Output (continued)
Parameter
Min
Typ
Max
Units
Notes
Monotonic Turn_On after detection of valid DC input voltage.
Measured from 30% to 100% of Vnom.
Turn-On
Delay
Rise Time2
Overshoot
5
500
s
ms
%
5
20
Restart Shutdown Delay
Shutdown is delayed during a re-start in order to guarantee restart
of multiple paralleled modules.
S
Load Step Response
I
V
Response Time
50
%FL
Vdc
ms
125
39
%FL
Vdc
2.0
2
I/t slew rate 1A/µs.
Settling time to within regulation requirements.
Overload3
Current Limit
Shutdown
System Start-up
100
Fold-down.
Default state – hiccup mode
A 20 second shutdown delay is implemented to allow modules to be plugged in one at a time. During this time
fold-down occurs but the module will not shut down below 39Vdc.
Over-voltage
Delayed
Instantaneous
Latchoff
60
65
200msec delayed shutdown implemented.
Latched shutdown without hiccup.
Three restart attempts are implemented within a one minute window prior to a latched shutdown when Vout
< 65Vdc. Beyond 1 minute the counter restarts
Over-temperature
Warning
Shutdown
Auto-recoverable
Vdc
Vdc
5
°C
20
°C
Implemented prior to commencement of an OT shutdown
Below the maximum rating of the device being protected
Temperature hysteresis of approximately 10°C provided between shutdown and restart.
Auxiliary Output
Parameter
ON when the input voltage is
Min
Output Voltage Setpoint
Output Current
Overall Regulation
Typ
-26
Max
Units
-72
Vdc
5.2
Vdc
0.005
0.75
A
-5
+5
%
Isolated from the main output to meet POE requirements.
50mA dedicated for powering adjacent PEMs during a fault.
700mA available for external use.
100
25
mVpk-pk
mVrms
20MHz bandwidth. Measured across a 1F tantalum and a
0.1F ceramic capacitor
7
Vdc
175
%FL
Ripple and Noise
50
Over-voltage Clamp
Over-current Limit
110
Isolation from the main output
2250
Vdc
50
Vdc
Isolation from frame ground
2
3
Notes
A 1MΩ noise suppression resistor is connected between
Logic_GRD and Frame_GRD.
Below -5C the rise time is approximately 5 minutes to protect bulk capacitors in the unit
Hiccup performance attempts automatic recovery from an overload shutdown with approximately a 90% off-time duty cycle. The duty cycle
varies periodically in order to guarantee multi-module recovery synchronization. Latchoff can be chosen via software instead of the default
hiccup. Recovery from a latchoff requires ENABLING, or software commanding OFF followed by an ON after a 2 second delay.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Mechanical, Environmental and EMC Specifications
Dimensions (nominal)
Length (in./mm)
13.85 / 351.8
Width (in./mm)
4.00 / 101.6
Height (in./mm)
1.66 / 42.2
Weight (lb/kg)
4.6 / 2.1
Environmental
Parameter
Ambient Temperature
Operating
Ambient Derating
Power Derating2
Storage Temperature
Humidity
Min
Typ
-54
Max
Units
45
1
°C
°C
%/°C
-40
85
°C
5
95
%
1
Shock and Vibration
Operational Test
Test Levels
Drop and Tip Over
Earthquake Rating
Notes
Air inlet from sea level to 5,000 feet.
Per 1,000 feet above 5,000 feet.
Up to 55°C
Relative humidity, non-condensing
IEC 68-2
IEC 721-3-2
IEC 68-2-31
4
Zone
Per Telcordia GR-63-CORE, all floors, when installed in CP Shelf.
EMC, Performance
Parameter
Min
Units
Notes
Conducted Emissions - dc
Telcordia GR-1089-CORE and CISPR22 (EN55022) - Class A
ESD
Error free per EN/IEC 61000-4-2 Level 4 (8 kV contact discharge, 15 kV air discharge).
Radiated Immunity
Error free per EN/IEC 61000-4-3 Level 3 (10 V/m).
Differential mode surge
100
Vdc
Differential mode surge transient
1000
Vdc
Common mode surge
(1.2/50s pulse)
1000
Vdc
Isolation
Input-Chassis/Signals
Input-Output/Signals
Output-Chassis/Signals
Main-Aux Outputs
ANSI T1.315, No errors
No errors. IEEE C62.41 defined pulse transient
Error free per EN/IEC 61000-4-6 Level 3 (10Vrms).
Reliability (calculated)
5
Max
FCC and CISPR22 (EN55022) - Class A3
Conducted Immunity
4
Typ
Radiated Emissions5
400,000
1700
2250
2250
2250
Hours
At ambient of 25°C at full load per Telcordia SR-332, Reliability
Prediction for Electronic Equipment, Method I Case III.
Per EN60950.
Vdc
Per IEEE802.3af.
Service Life
10
Years
Acoustic Noise
55
dBA
25°C ambient, full load excluding fans.
Noise is proportional to fan speed, load and ambient temperature.
Designed to start at an ambient as low as -40°C, but may not meet operational limits until above -5°C.
Radiated emissions compliance was met using a GE Critical Power shelf. This shelf includes output common and differential mode capacitors that
assist in meeting compliance.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Status and Control
Module Present Signal: This signal has dual functionality. It can
be used to alert the system when a module is inserted. A 500Ω
resistor is present in series between this signal and Logic_GRD. An
external pull-up should not raise the voltage on the pin above
0.25Vdc. Above 1Vdc, the write_protect feature of the EEPROM is
enabled.
The PEM provides two means for monitor/control: analog or I2C.
Details of analog controls are provided in this data sheet under
Signal Definitions. GE Energy will provide separate application
notes on the I2C protocol for users to interface to the CPL PEMs.
Contact your local GE Energy representative for details.
Protocol Select: Establishes the communications mode of the
power supply, between analog/I2C and RS485 modes. For RS485,
connect 10kΩ pull-down resistor to 54_OUT(-DC).
Hot Plug
When rapidly extracting and reinserting modules care should be
taken to allow for discharging the internal bias supply so that a
predictable restart could be achieved. The way to ensure that the
circuit sufficiently discharges is to observe the spinning of the fans
after an extraction. The unit should not be reinserted until the fans
stop spinning.
Enable: On/Off control when I2C communications are utilized as
configured by the Protocol pin. This pin must be pulled low to turn
ON the power supply. The power supply will turn OFF if either the
Enable or the ON/OFF pin is released. This signal is referenced to
Logic_GRD.
Without bleeding down internal bias the module may remember
its last assigned address and may not configure itself properly if
reinserted into another slot.
ON/OFF: This is a short pin utilized for hot-plug applications to
ensure that the power supply turns OFF before the power pins are
disengaged. It also ensures that the power supply turns ON only
after the power pins have been engaged. Must be connected to
V_OUT (-DC).
Control Definitions
All signals are referenced to Logic_GRD unless otherwise noted.
See the Signal Definitions Table at the end of this document for
further description of all the signals.
Status Signals
Power_OK: This signal is HI when the main output is present and
goes LO when the main output is not present.
Control Signals
Margining: Set point of the PEM can be changed via this input pin.
Programming can be either a voltage source or a resistance
divider. The margining pin is connected to 3.3Vdc via a 10kΩ
resistor inside the PEM. See graphs below.
Alert #: I2C interrupt signal.
3.3Vdc
10k
-58
-46
-44
Vcontrol
Vprogram
Output Setpoint (Vdc)
I_limit: This signal is HI when the main output is not in current
limit and goes LO when current limit has activated.
0 0.1
An open circuit on this pin reverts the voltage level back to the
original setting.
Software commanded margining overrides the hardware set
point indefinitely or until the default setting is reinstated for
example if input power and bias power have been removed from
the module.
Fault: This signal goes LO for any failure that requires PEM
replacement. Some of these faults may be due to:
•
•
•
•
•
Fan failure
Over-temperature condition
Over-temperature shutdown
Over-voltage shutdown
Internal PEM Fault
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Digital Feature Descriptions
PMBus™ compliance: The power supply is fully compliant
to the Power Management Bus (PMBus™) rev1.2
requirements with the following exceptions:
The power supply continuously updates its STATUS and
ALARM registers to the latest state in order to capture the
‘present’ state of the power supply. There are a number of
indicators, such as those indicating a communications fault
(PEC error, data error) that do not get cleared until
specifically instructed by the host controller sending a
clear_faults command. A ‘bit’ indicator notifies the user if the
STATUS and ALARM registers changed since the last ‘read’
by the host controller.
For example, if a voltage surge causes a momentary
shutdown for over voltage the power supply will
automatically restart if the ‘auto_restart’ feature is invoked.
During the momentary shutdown the power supply issues
an Alert# indicating to the system controller that a status
change has occurred. If the system controller reads back
the STATUS and ALARM registers while the power supply is
shut down it will get the correct fault condition. However,
inquiry of the state of the power supply after the restart
event would indicate that the power supply is functioning
correctly. The STATUS and ALARM indicators did not freeze
at the original shutdown state and so the reason for the
original Alert# is erased. The restart ‘bit’ would be set to
indicate that an event has occurred.
The power supply also clears the STATUS and ALARM
registers after a successful read back of the information in
these registers, with the exception of communications error
alarms. This automated process improves communications
efficiency since the host controller does not have to issue
another clear_faults command to clear these registers.
Dual, redundant buses: Two independent I2C lines provide
true communications bus redundancy and allow two
independent controllers to sequentially control the power
supply. For example, a short or an open connection in one of
the I2C lines does not affect communications capability on
the other I2C line. Failure of a ‘master’ controller does not
affect the power supplies and the second ‘master’ can take
over control at any time.
Using the PCA9541 multiplexer: Transition between the two
I2C lines is provided by the PCA9541 I2C/01 master selector
multiplexer, which, upon start-up, connects channel 0.
Applications using only a single I2C line can immediately
start talking across the bus without first requiring to
reconfigure the multiplexer.
Diagram showing the dual I2C bus system.
Control can be taken over at any time by a specific ‘master’
even during data transmission to the other ‘master’. The
‘master’ needs to be able to handle incomplete
transmissions in the multi-master environment in case
switching should commence in the middle of data
transmission.
Master/Slave: The ‘host controller’ is always the MASTER.
Power supplies are always SLAVES. SLAVES cannot initiate
communications or toggle the Clock. SLAVES also must
respond expeditiously at the command of the MASTER as
required by the clock pulses generated by the MASTER.
Clock stretching: The ‘slave’ µController inside the power
supply may initiate clock stretching if it is busy and it desires
to delay the initiation of any further communications. During
the clock stretch the ‘slave’ may keep the clock LO until it is
ready to receive further instructions from the host controller.
The maximum clock stretch interval is 25ms.
The host controller needs to recognize this clock stretching,
and refrain from issuing the next clock signal, until the clock
line is released, or it needs to delay the next clock pulse
beyond the clock stretch interval of the power supply.
Note that clock stretching can only be performed after
completion of transmission of the 9th ACK bit, the exception
being the START command.
Clock
Stretch
Example waveforms showing clock stretching.
Communications speed: Both 100kHz and 400kHz clock
rates are supported. The power supplies default to the
100kHz clock rate.
Packet Error Checking: The power supply will not respond
to commands without the trailing PEC. The integrity of
communications is compromised if packet error correction
is not employed. There are many functional features,
including turning OFF the main output, that require
validation to ensure that the correct command is executed.
PEC is a CRC-8 error-checking byte, based on the polynomial
C(x) = x8 + x2 + x + 1, in compliance with PMBus™
requirements. The calculation is based in all message bytes,
including the originating write address and command bytes
preceding read instructions. The PEC is appended to the
message by the device that supplied the last byte.
SMBusAlert#: The power supply can issue SMBAlert# driven
from either its internal micro controller (µC) or from the
PCA9541 I2C bus master selector. That is, the SMBAlert#
signal of the internal µC funnels through the PCA9541
master selector that buffers the SMBAlert# signal and splits
the signal to the two SMBAlert# signal pins exiting the power
supply. In addition, the PCA9541 signals its own SMBAlert#
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
request to either of the two SMBAlert# signals when
required.
Non-supported commands: Non supported commands are
flagged by setting the appropriate STATUS bit and issuing an
SMBAlert# to the ‘host’ controller.
Data out-of-range: The power supply validates data
settings and sets the data out-of-range bit and SMBAlert# if
the data is not within acceptable range.
SMBAlert# triggered by the µC: The µC driven SMBAlert#
signal informs the ‘master/host’ controller that either a
STATE or ALARM change has occurred. Normally this signal
is HI. The signal will change to its LO level if the power
supply has changed states and the signal will be latched LO
until the power supply receives a ‘clear’ instruction as
outlined below. If the alarm state is still present after the
‘clear_faults’ command has been received, then the signal
will revert back into its LO level again and will latch until a
subsequent ‘clear’ signal is received from the host controller.
The signal will be triggered for any state change, including
the following conditions;
•
•
•
•
•
•
•
•
•
VIN under or over voltage
Vout under or over voltage
IOUT over current
Over Temperature warning or fault
Fan Failure
Communication error
PEC error
Invalid command
Internal faults
The power supply will clear the SMBusAlert# signal (release
the signal to its HI state) upon the following events:
•
•
•
Completion of a ‘read_status’ instruction
Receiving a CLEAR_FAULTS command
The main output recycled (turned OFF and then ON) via
the ENABLE signal pin
•
The main output recycled (turned OFF and then ON) by
the OPERATION command
SMBAlert# triggered by the PCA9541: If clearing the Alert#
signal via the clear_faults or read back fails, then reading
back the Alert# status of the PCA9541 will be necessary
followed by clearing of the PCA9541 Alert#.
The PCA9541 can issue an Alert# even when single bus
operation is selected where the bus master selector has not
been used or addressed. This may occur because the
default state of the PCA9541/01 integrated circuit issues
Alert# to both i2C lines for all possible transitioning states of
the device. For example, a RESET caused by a glitch would
cause the Alert# to be active.
If the PCA9541 is not going to be used in a specific
application (such as when only a single I2C line is utilized),
it is imperative that interrupts from the PCA9541 are deactivated by the host controller. To de-activate the interrupt
registers the PCA9541 the ‘master’ needs to address the
PCA9541 in the ‘write’ mode, the interrupt enable (IE)
register needs to be accessed and the interrupt masks have
to be set to HI ‘1’. (Note: do not mask bit 0 which transmits
Alert# from the power supply). This command setting the
interrupt enable register of the PCA9541 is shown below;
Start
1
S
Unit Address
7
1
6
1
Command Code
8
0x00
5
1
4
0
3
A2
ACK
1
A
ACK
2
A1
1
A0
IE Register
8
0x0E
0
0
1
A
Stop
P
There are two independent interrupt enable (IE) registers,
one for each controller channel (I2C-0 and I2C-1). The
interrupt register of each channel needs to be configured
independently. That is, channel I2C-0 cannot configure the IE
register of I2C-1 or vise-versa.
This command has to be initiated to the PC9541 only once
after application of power to the device. However, every
time a restart occurs the PCA9541 has to be reconfigured
since its default state is to issue Alert# for changes to its
internal status.
If the application did not configure the interrupt enable
register the Alert# line can be cleared (de-activated), if it has
been activated by the PCA9541, by reading back the data
from the interrupt status registers (Istat).
Refer to the PCA9541 data sheet for further information on
how to communicate to the PCA9541 multiplexer.
Please note that the PCA9541 does not support Packet Error
Checking (PEC).
Re-initialization: The I2C code is programmed to re-initialize
if no activity is detected on the bus for 5 seconds. Reinitialization is designed to guarantee that the I2C
µController does not hang up the bus. Although this rate is
longer than the timing requirements specified in the SMBus
specification, it had to be extended in order to ensure that a
re-initialization would not occur under normal transmission
rates. During the few µseconds required to accomplish reinitialization the I2C µController may not recognize a
command sent to it. (i.e. a start condition).
Global broadcast: This is a powerful command because it
can instruct all power supplies to respond simultaneously in
one command. But it does have a serious disadvantage.
Only a single power supply needs to pull down the ninth
acknowledge bit. To be certain that each power supply
responded to the global instruction, a READ instruction
should be executed to each power supply to verify that the
command properly executed. The GLOBAL BROADCAST
command should only be executed for write instructions to
slave devices.
Note: The PCA9541 i2c master selector does not respond to
the GLOBAL BROADCAST command.
Read back delay: The power supply issues the SMBAlert #
notification as soon as the first state change occurred.
During an event a number of different states can be
transitioned to before the final event occurs. If a read back is
implemented rapidly by the host a successive SMBAlert#
could be triggered by the transitioning state of the power
supply. In order to avoid successive SMBAlert# s and read
back and also to avoid reading a transitioning state, it is
prudent to wait more than 2 seconds after the receipt of an
SMBAlert# before executing a read back. This delay will
ensure that only the final state of the power supply is
captured.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Successive read backs: Successive read backs to the power
supply should not be attempted at intervals faster than
every one second. This time interval is sufficient for the
internal processors to update their data base so that
successive reads provide fresh data.
Device ID: Address bits A2, A1, A0 set the specific address of
the power supply. The least significant bit x (LSB) of the
address byte configures write [0] or read [1] events. In a
write command the system instructs the power supply. In a
read command information is being accessed from the
power supply.
7 6
1 1
1 0
1 0
0 0
MSB
PCA9541
Micro controller
External EEPROM
Global Broadcast
5
1
0
1
0
4
0
0
0
0
Address Bit
3
2
A2
A1
A2
A1
A2
A1
0
0
1
A0
A0
A0
0
0
R/W
R/W
R/W
0
LSB
The Global Broadcast instruction executes a simultaneous
write instruction to all power supplies. A read instruction
cannot be accessed globally. The three programmable
address bits are the same for all I2C accessible devices
within the power supply.
PMBusTM Commands
Standard instruction: Up to two bytes of data may follow
an instruction depending on the required data content.
Analog data is always transmitted as LSB followed by MSB.
PEC is mandatory and includes the address and data fields.
1
S
8
Slave address
8
Low data byte
Wr
1
A
1
A
8
Command Code
8
High data byte
1
A
1
A
1
P
Master to Slave
Slave to Master
SMBUS annotations; S – Start , Wr – Write, Sr – re-Start, Rd –
Read,
A – Acknowledge, NA – not-acknowledged, P – Stop
Direct mode data format: The equation is y= [ mX+b ] x10R .
In the equation, y is the data from the controller and x is the
‘real’ value either being set or returned, except for VIN and
Fan speed , x is the data from the controller and y is the
‘real’ value.
For example, to set the output voltage to 50.45VDC, Multiply
the desired set point by the m constant, 50.45 x 400 =
20,180. Convert this binary number to its hex equivalent:
20,180b = 0x4ED4. The result is sent LSB=0xD4 first, then
MSB=0x4E.
FUNCTION
Output voltage
Output voltage shutdown
Output Current
Temperature
Input Voltage
Fan Speed setting ( % )
Fan speed in RPM
Command
Hex
Code
Data
Field
Function
Operation
01
1
Output ON/OFF
Clear_Faults
03
0
Clear Status
Vout_command
21
2
Set Vout
Vout_OV_fault_limit
40
2
Set OV fault limit
Read_status
D0
10
Read Status, Vout, Iout, T
LEDs test ON
D2
0
Test LEDs
LEDs test OFF
D3
0
Service_LED_ON
D4
0
Service_LED_OFF
D5
0
Enable_write
D6
0
Enable EEPROM write
Disable_write
D7
0
Disable EEPROM write
Inhibit_restart
D8
0
Latch upon failure
Auto_restart
D9
0
Hiccup
Isolation_test
DA
0
Perform isolation test
Read_input_string
DC
3
Read Vin and Pin
Read_firmware_rev
DD
3
Firmware revisions
Read_run_timer
DE
3
Accumulated ON state
Fan_speed_set
DF
2
Fan speed control
Fan_normal_speed
E0
0
Stop fan control
Read_fan_speed
E1
4
Fan control & speed
Stretch_LO_25ms
E2
0
Production test feature
Service LED
Command Descriptions
Operation (01h) : By default the Power supply is turned ON
at power up as long as ENABLE is active LO. The Operation
command is used to turn the Power Supply ON or OFF via
the PMBus. The data byte below follows the OPERATION
command.
1
A
8
PEC
PMBusTM Command set:
Operation
Write / read
m
400
b
0
R
0
read
read
read
read
read
5
1
25
1
100
0
0
3500
0
0
0
0
-2
0
0
FUNCTION
Unit ON
Unit OFF
DATA BYTE
0x80
0x00
To RESET the power supply cycle the power supply OFF, wait
at least 2 seconds, and then turn back ON. All alarms and
shutdowns are cleared during a restart.
Clear_faults (03h): This command clears information bits in
the STATUS registers, these include:
Isolation OK
Isolation test failed
Restarted OK
Invalid command
Invalid data
PEC error
Vout_Command (21h) : This command is used to change
the output voltage of the power supply. Changing the output
voltage should be performed simultaneously to all power
supplies operating in parallel using the Global Address
(Broadcast) feature. If only a single power supply is
instructed to change its output, it may attempt to source all
the required power which can cause either a power limit or
shutdown condition.
•
•
•
•
•
•
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Software programming of output voltage overrides the set
point voltage configured during power_up. The program no
longer looks at the ‘margin pin’ and will not respond to any
hardware voltage setting. The default state cannot be
accessed any longer unless power is removed from the DSP.
To properly hot-plug a power supply into a live backplane,
the system generated voltage should get re-configured into
either the factory adjusted firmware level or the voltage
level reconfigured by the margin pin. Otherwise, the voltage
state of the plugged in power supply could be significantly
different than the powered system.
Voltage margin range: 42VDC – 58 VDC.
A voltage programming example: The task: set the output
voltage to 50.45VDC
The constants for voltage programming are: m = 400, b and
R = 0. Multiply the desired set point by the m constant,
50.45 x 400 = 20,180. Convert this binary number to its hex
equivalent: 20,180b = 4ED4h. Transmit the data LSB first,
followed by MSB,
0 x D44Eh.
Vout_OV_fault_limit (40h) : This command sets the Output
Overvoltage Shutdown level.
Manufacturer-Specific PMBusTM Commands
Many of the manufacturer-specific commands read back
more than two bytes. If more than two bytes of data are
returned, the standard SMBusTM Block read is utilized. In this
process, the Master issues a Write command followed by
the data transfer from the power supply. The first byte of the
Block Read data field sends back in hex format the number
of data bytes, exclusive of the PEC number, that follows.
Analog data is always transmitted LSB followed by MSB. A
No-ack following the PEC byte signifies that the transmission
is complete and is being terminated by the ‘host’.
Read_status (D0h) : This ‘manufacturer specific’ command
is the basic read back returning STATUS and ALARM register
data, output voltage, output current, and internal
temperature data in a single read.
1
S
8
Slave address
1
Sr
Wr
8
Slave address
8
Status-2
1
A
8
Alarm-1
8
Current
1
8
A Command Code
Rd
8
Status-1
1
A
1
A
8
Byte count = 9
1
A
8
Voltage LSB
1
A
1
A
8
Temperature
8
Alarm-2
1
A
1
A
PEC Error
6
5
Will Restart
Invalid Instruction
4
3
2
Power Capacity
Isolation test
failed
Restarted ok
1
Data out of range
0
Enable pin HI
1
NA
1
P
Status and alarm registers
The content and partitioning of these registers is
significantly different than the standard register set in the
PMBus™ specification. More information is provided by
these registers and they are accessed rapidly, at once, using
the ‘multi parameter’ read back scheme of this document.
There are a total of four registers. All errors, 0 – normal, 1 –
alarm.
Description
Mismatch between computed and
transmitted PEC. The instruction has
not been executed. Clear_Flags
resets this register.
Restart after a shutdown = 1
The instruction is not supported. An
ALERT# will be issued. Clear_Flags
resets this register.
n/a
Information only to system controller
Informs HOST that a successful
RESTART occurred clearing the status
and alarm registers
Flag appears until the data value is
within range. A clear_flags
command does not reset this register
until the data is within normal range.
State of the ENABLE pin, HI = 1 = OFF
Isolation test failed: The ‘system controller’ has to
determine that sufficient capacity exists in the system to
take a power supply ‘off line’ in order to test its isolation
capability. Since the power supply cannot determine
whether sufficient redundancy is available, the results of this
test are provided, but the ‘internal fault’ flag is not set.
Status-1
Bit
7
6
5
4
3
2
1
0
Title
spare
Isolation test OK
Internal fault
Shutdown
Service LED ON
External fault
LEDs flashing
Output ON
Description
Isolation test completed successfully.
The power supply is faulty
ON = 1
the power supply is functioning OK
LEDs tested test ON = 1
ON = 1
Alarm-2
2
1
A
Title
7
7
6
5
4
3
1
A
8
PEC
Bit
Bit
8
Voltage MSB
1
A
Status-2
1
0
Title
Fan Fault
No primary
Primary OT
DC/DC OT
Output voltage
lower than bus
Thermal sensor
failed
5V out_of_limits
Power delivery
Description
No primary detected
Primary section OT
DC/DC section OT
Internal regulation failure
Internal failure of a temperature
sensing circuit
Either OVP or OCP occurred
a power delivery fault occurred
Power Delivery: The power supply compares its internal
sourced current to the current requested by the current
share pin. If the difference is > 10A, a fault is issued.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Alarm-1
Bit
Title
Description
7
Unit in power limit
6
Primary fault
5
4
Over temp.
shutdown
Over temp warning
3
In over current
An overload condition that results in
constant power
Indicates either primary failure or
INPUT not present. Used in
conjunction with bit-0 and Status_1
bits 2 and 5 to assess the fault.
One of the over_temperature
sensors tripped the supply
Temperature is too high, close to
shutdown
Shutdown is triggered by low
output voltage < 39VDC.
2
1
Over voltage
shutdown
Vout out_of_limits
0
Vin out_of_limits
Indication the output is not within
design limits. This condition may or
may not cause an output shutdown.
The input voltage is outside design
limits
LEDS test ON (D2h) : Will turn-ON simultaneously the four
front panel LEDs of the Power supply sequentially 7 seconds
ON and 2 seconds OFF until instructed to turn OFF. The
intent of this function is to provide visual identification of the
power supply being talked to and also to visually verify that
the LEDs operate and driven properly by the micro
controller.
LEDS test OFF (D3h) : Will turn-OFF simultaneously the four
front panel LEDs of the Power supply.
Service LED ON (D4h) : Requests the power supply to flashON the Service (ok-to-remove) LED. The flash sequence is
approximately 0.5 seconds ON and 0.5 seconds OFF.
Service LED OFF (D5h) : Requests the power supply to turn
OFF the Service (ok-to-remove) LED.
Enable write (D6h) : This command enables write
permissions into the upper ¼ of memory locations for the
external EEPROM. A write into these locations is normally
disabled until commanded through I2C to permit writing into
the protected area. A delay of about 10ms is required from
the time the instruction is requested to the time that the
power supply actually completes the instruction.
See the FRU-ID section for further information of content
written into the EEPROM at the factory.
Disable write (D7h) : This command disables write
permissions into the upper ¼ of memory locations for the
external EEPROM.
Unit in Power Limit or in Current Limit: When output
voltage is > 36VDC the Output LED will continue blinking.
When output voltage is < 36VDC, if the unit is in the RESTART
mode, it goes into a hiccup. When the unit is ON the output
LED is ON, when the unit is OFF the output LED is OFF.
When the unit is in latched shutdown the output LED is OFF.
Inhibit_restart (D8h) : The Inhibit-restart command directs
the power supply to remain latched off for over_voltage,
over_temperature and over_current. The command needs
to be sent to the power supply only once. The power supply
will remember the INHIBIT instruction as long as internal
bias is active.
Restart after a lachoff: To restart after a latch_off either of
four restart mechanisms are available. The hardware pin
Enable may be turned OFF and then ON. The unit may be
commanded to restart via i2c through the Operation
command by first turning OFF then turning ON . The third
way to restart is to remove and reinsert the unit. The fourth
way is to turn OFF and then turn ON ac power to the unit.
The fifth way is by changing firmware from latch off to
restart. Each of these commands must keep the power
supply in the OFF state for at least 2 seconds, with the
exception of changing to restart.
A successful restart shall clear all alarm registers, set the
restarted successful bit of the Status_2 register.
A power system that is comprised of a number of power
supplies could have difficulty restarting after a shutdown
event because of the non-synchronized behavior of the
individual power supplies. Implementing the latch-off
mechanism permits a synchronized restart that guarantees
the simultaneous restart of the entire system.
A synchronous restart can be implemented by;
1. Issuing a GLOBAL OFF and then ON command to all
power supplies,
2. Toggling Off and then ON the ENABLE signal
3. Removing and reapplying input commercial power to the
entire system.
The power supplies should be turned OFF for at least 20 – 30
seconds in order to discharge all internal bias supplies and
reset the soft start circuitry of the individual power supplies.
Auto_restart (D9h) : Auto-restart is the default
configuration for overvoltage, overcurrent and
overtemperature shutdowns.
However, overvoltage has a unique limitation. An
overvoltage shutdown is followed by three attempted
restarts, each restart delayed 1 second, within a 1 minute
window. If within the 1 minute window three attempted
restarts failed, the unit will latch OFF. If within the 1 minute
less than 3 shutdowns occurred then the count for latch OFF
resets and the 1 minute window starts all over again.
This command resets the power supply into the default
auto-restart configuration.
Isolation test (DAh): This command verifies functioning of
output OR’ing. At least two paralleled power supplies are
required. The host should verify that N+1 redundancy is
established. If N+1 redundancy is not established the test
can fail. Only one power supply should be tested at a time.
Verifying test completion should be delayed for
approximately 30 seconds to allow the power supply
sufficient time to properly execute the test.
Failure of the isolation test is not considered a power supply
FAULT because the N+1 redundancy requirement cannot be
verified. The user must determine whether a true isolation
fault indeed exists.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Read input string (DCh) : Reads back the input voltage and
input power6 consumed by the power supply.
1
S
7
Slave address
1
A
1
Sr
1
Wr
1
A
8
Command Code 0xDC
7
Slave Address
8
Byte Count = 4
1
Rd
1
A
8
Power - LSB
1
A
Fan_normal_speed (E0h): This command returns fan
control to the power supply. It does not require a trailing
data byte.
1
A
8
Voltage
8
Power - MSB
1
A
1
A
8
PEC
1
No-ack
7
Slave address
1
A
1
Sr
1
Wr
7
Slave Address
1
A
1
Rd
8
Primary micro revision
1
A
8
I2c Micro revision
8
Command Code 0xDD
1
A
1
A
1
A
8
Byte Count = 4
8
DSP revision
1
A
8
PEC
1
A
1
No-ack
1
P
For example; the read returns one byte for each device (i.e.
0 x 002114h ). The sequence is primary micro, DSP, and I2C
micro. 0x00 in the first byte indicates that revision
information for the primary micro is not supported. The
number 21 for the DSP indicates revision 2.1, and the
number 14 for the i2c micro indicates revision 1.4.
Read_run_timer [0 x DE]: This command reads back the
recorded operational ON state of the power supply in hours.
The operational ON state is accumulated from the time the
power supply is initially programmed at the factory. The
power supply is in the operational ON state both when in
standby and when it delivers main output power. Recorded
capacity is approximately 10 years of operational state.
1
S
7
Slave address
1
Sr
1
Wr
7
Slave Address
8
Time - LSB
1
A
8
PEC
1
No-ack
1
A
1
Rd
8
Time
8
Command Code 0xDE
1
A
1
A
1
A
8
Byte count = 4
8
Time - MSB
1
A
1
A
1
P
Fan_speed_set (DFh) : This command instructs the power
supply to increase the speed of the fan. The transmitted
data byte represents the hex equivalent of the duty cycle in
6
1
P
Read_Fan_speed (E1h) : Returns the commanded fan speed
in percent and the measured fan speed in RPM from the
individual fans. Up to 3 fans are supported. If a fan does not
exist (units may contain from 1 to 3 fans), or if the command
is not supported the unit return 0x00.
1
S
Read_firmware_rev [0 x DD]: Reads back the firmware
revision of all three µC in the power supply.
1
S
percentage, i.e. 100% = 0 x 64h. The command can only
increase fan speed, it cannot instruct the power supply to
reduce the fan speed below what the power supply requires
for internal control.
Input power consumption is not supported by the PEM in order to
improve efficiency. The returned value is 00.
8
Slave address
1
Sr
8
Slave address
8
Adjustment %
8
PEC
1
NA
1
A
Wr
Rd
1
A
8
Fan-1
8
Command 0xE1
1
A
1
A
8
Byte count = 5
1
A
8
Fan-2
1
A
1
A
8
Fan-3
1
A
1
P
Stretch_LO_25ms (E2h) : Command used for production
test of the clock stretch feature.
None supported commands or invalid data: The power
supply notifies the MASTER if a non-supported command
has been sent or invalid data has been received. Notification
is implemented by setting the appropriate STATUS and
ALARM registers and setting the SMBAlert# flag.
Fault Management
The power supply records faults in the STATUS and ALARM
registers above and notifies the MASTER controller as
described in the Alarm Notification section of the nonconforming event.
The STATUS and ALARM registers are continuously updated
with the latest event registered by the rectifier monitoring
circuits. A host responding to an SMBusALERT# signal may
receive a different state of the rectifier if the state has
changed from the time the SMBusALERT# has been
triggered by the rectifier.
The power supply differentiates between internal faults
that are within the power supply and external faults that
the power supply protects itself from, such as overload or
input voltage out of limits. The FAULT LED, FAULT PIN or i2c
alarm is not asserted for EXTERNAL FAULTS. Every attempt is
made to annunciate External Faults. Some of these
annunciations can be observed by looking at the input LEDs.
These fault categorizations are predictive in nature and
therefore there is a likelihood that a categorization may not
have been made correctly.
Input voltage out of range: The Input LED will continue
blinking as long as sufficient power is available to power the
LED. If the input voltage is completely gone the Input LED is
OFF.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
State Change Definition
External EEPROM
A state_change is an indication that an event has occurred
that the MASTER should be aware of. The following events
shall trigger a state_change;
A 64k-bit EEPROM is provided across the I2C bus. This
EEPROM is used for both storing FRU_ID information and for
providing a scratchpad memory function for customer use.
•
Initial power-up of the system when AC gets
turned ON . This is the indication from the rectifier
that it has been turned ON. Note that the master
needs to read the status of each power supply to
reset the system_interrupt. If the power supply is
back-biased through the 8V_INT or the 5VSTB it
will not issue an SMBALERT# when AC power is
turned back ON.
•
Whenever the power supply gets hot-plugged into
a working system. This is the indicator to the
system (MASTER) that a new power supply is on
line.
•
Any changes in the bit patterns of the STATUS and
ALARM registers are a STATUS change which
triggers the SMBALERT# flag. Note that a hostissued command such as CLEAR_FAULTS will not
trigger an SMB
Hot plug procedures
Careful system control is recommended when hot plugging
a power supply into a live system. It takes about 15 seconds
for a power supply to configure its address on the bus based
on the analog voltage levels present on the backplane. If
communications are not stopped during this interval,
multiple power supplies may respond to specific instructions
because the address of the hot plugged power supply
always defaults to xxxx000 (depending on which device is
being addressed within the power supply) until the power
supply configures its address.
The recommended procedure for hot plug is the following:
The system controller should be told which power supply is
to be removed. The controller turns the service LED ON, thus
informing the installer that the identified power supply can
be removed from the system. The system controller should
then poll the module_present signal to verify when the
power supply is re-inserted. It should time out for 15
seconds after this signal is verified. At the end of the time
out all communications can resume.
Predictive Failures
Alarm warnings that do not cause a shutdown are
indicators of potential future failures of the power supply.
For example, if a thermal sensor failed, a warning is issued
but an immediate shutdown of the power supply is not
warranted.
Another example of potential predictive failure mechanisms
can be derived from information such as fan speed when
multiple fans are used in the same power supply. If the
speed of the fans varies by more than 20% from each other,
this is an indication of an impending fan wear out.
The goal is to identify problems early before a protective
shutdown would occur that would take the power supply
out of service.
Functionally the EEPROM is equivalent to the ST M34D64
part that has its memory partitioned into a write protected
upper ¼ of memory space and the lower ¾ section that
cannot be protected. FRU_ID is written into the write
protected portion of memory.
Write protect feature: Writing into the upper 1/4 of
memory can be accomplished either by hardware or
software.
The power supply pulls down the write_protect (Wp) pin to
ground via a 500Ω resistor between the ‘module_present’
signal pin and Logic_GRD (see the Module Present Signal
section of Input Signals). Writing into the upper ¼ of
memory can be accomplished by pulling HI the
module_present pin.
An alternative, and the recommended approach, is to issue
the Enable_write command via software.
Page implementation: The external EEPROM is partitioned
into 32 byte pages. For a write operation only the starting
address is required. The device automatically increments
the memory address for each byte of additional data it
receives. However, if the 32 byte limit is exceeded the
device executes a wrap-around that will start rewriting from
the first address specified. Thus byte 33 will replace the first
byte written, byte 34 the second byte and so on. One needs
to be careful therefore not to exceed the 32 byte page
limitation of the device.
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Alarm Table
Power Supply LED State
IN OK
DC OK
Service
Fault
Green
Green
Amber
Red
Condition
OK
Thermal Alarm
(5C before shutdown)
Thermal Shutdown
1
Defective Fan
1
0
Fault
0
Monitoring Signals
(Referenced to Logic_GRD)
Power
Module
OTW
OK
I_Limit
Present
HI
HI
HI
HI
LO
LO
1
1
1
0
HI
LO
HI
HI
1
0
1
1
LO
LO
LO
HI
LO
1
0
0
1
LO
HI
LO
HI
LO
Blown Input Fuse in Unit
1
0
0
1
LO
HI
LO
HI
LO
No Input > 8mS (single unit)
0
1
0
0
HI
HI
LO2
HI
LO
Input Present but not within limits
0
0
0
0
HI
HI
LO
HI
LO
Input not present (with back bias)
0
0
0
0
HI
HI
LO
HI
LO
Over Voltage Latched Shutdown
1
0
0
1
LO
HI
LO
HI
LO
Over Current
1
Blinks
0
0
HI
HI
LO
LO
LO
Over Current Shutdown
1
0
0
0
HI
HI
LO
LO
LO
Non-catastrophic Internal Failure1
1
1
0
1
LO
HI
HI
HI
LO
1 Missing Module (external pull-up)
HI
Standby (remote)
1
0
0
0
HI
HI
LO
HI
LO
(i2C
Service Request
mode)
1
1
Blinks
0
HI
HI
HI
HI
Any detectable fault condition that does not result in the power supply shutting down. For example, ORing FET failure, boost section out of
regulation, etc.
2 Signal transition from HI to LO is output load dependent
LO
1
Output Connector
Mating Connector: AMP 1450572-1
A6 A1 P7
Signal
6
A SCL_0
5
MOD_PRES
B SCL_1
OTW
C SDA_0
Margin
D SDA_1
Fault
4
Output Power
3
Ilimit LOGIC_GRD
Alert#_
Alert#_1
0
Enable
Reset
5VA
P1
Power_OK
2
1
RS 485+
UNIT_ADDR
RS 485-
8V_INT
Ishare
Protocol
ON/OFF
SHELF_ADDR
P7
P6
V_OUT
(-DC)
V_OUT
(+DC)
Input Power
P5
P4
CO_RTN
Vin ( + )
P3
EARTH
(GND)
P2
P1
CO_LINE
Vin ( - )
Connector is viewed from the rear positioned inside the power supply.
Signal pins columns 1 and 2 are referenced to V_OUT (-DC).
Signal pins columns 3 through 6 are referenced to Logic GRD.
Last-to-make first-to-break pins.
First-to-make last-to-break longest pin implemented in the mating connector.
N/C – no connect pins must be left open. Do not connect these pins to either voltage sources or ground.
November 22, 2019
©2012 General Electric Company. All rights reserved.
Page 13
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Signal Definitions
All hardware alarm signals (Fault, Power_OK, I_Limit, OTW) are open drain FETs. These signals should be pulled HI to either 3.3V or 5V. Maximum sink
current 5mA. An active LO signal (< 0.4Vdc) state is referenced to Logic GRD unless otherwise stated. Contact your GE Critical Power representative for
more details.
Function
Label
Type
Description
Output Enable
Enable
Input
If shorted to LOGIC_GRD, the PEM output is enabled when using I2C mode of
operation. May also be toggled to reset a latched OFF PEM.
Output Good
Power_OK
Output
An open drain FET; normally HI, indicating output power is present. Changes to LO
when the main output is OFF,
Current Limit
I_Limit
Output
An open drain FET; normally HI, indicating normal operation. Changes to LO when
in current limit,
I2C Interrupt
Alert#_0
Alert#_1
Output
Interrupt signal via I2C lines indicating that service is requested from the host
controller. This signal pin is pulled up to 3.3V via a 10kΩ resistor and switches to
active LO when an interrupt occurs.
PEM Fault
Fault
Output
Indicates that an internal fault exists. An open drain FET; normally HI, changes to
LO.
Module Present
MOD_PRES
Output
Used to Indicate presence of PEM.
ON/OFF
ON/OFF
Input
Short pin, connects last and breaks first; used to activate and deactivate output
during hot-insertion and extraction, respectively. Ref: V_OUT (-DC)
Margining
Margin
Input
Allows changing of output voltage through an analog voltage input or via resistor
divider.
Over-Temperature Warning
OTW
Output
An open drain FET; normally HI, changes to LO approximately 5°C prior to thermal
shutdown.
PEM address
Unit_addr
Input
Voltage level addressing of PEMs within a single shelf. Ref: V_OUT (-DC).
Shelf Address
Shelf_addr
Input
Voltage level addressing of PEMs within multiple shelves. Ref: V_OUT (-DC).
Back bias
8V_INT
_
Diode OR’ed 8Vdc drain; used to back bias microprocessors and DSP of failed PEM
from operating PEMs. Ref: V_OUT (-DC).
Mux Reset
Reset
Input
Resets the I2C lines to I2C line 0.
Standby power
5VA
Output
5V at 0.75A provided for external use by either adjacent power supplies or the
using system.
Current Share
Ishare
-
A single wire interface between each of the power unit forces them to share the
load current. Ref: V_OUT (-DC).
I2C Line 0
SCL_0, SDA_0
Input
I2C line 0.
I2C
SCL_1, SDA_1
Input
I2C line 1.
Line 1
November 22, 2019
©2012 General Electric Company. All rights reserved.
Page 14
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Front Panel LEDs
Analog Mode
I2C Mode
ON: Input ok
OFF: Input out of limits
ON: Output ok
Blinking: Overload
ON: Over-temperature Warning
Blinking: Service
ON: Over-temperature Warning
ON: Fault
Dimensions
13.85 in.
(351.2 mm)
Rear View
4.00 in.
(101.6 mm)
1.63 in.
(41.4 mm)
Top View
November 22, 2019
©2012 General Electric Company. All rights reserved.
Front View
Page 15
GE
Data Sheet
CP2500DC54PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
Ordering Information
Item
Description
CP2500DC54PEZ
Factory tested to IEEE802.3af POE compliance, 5Vdcaux at 0.75A.
CP2500DC54PEZ-B
Same as above with a black faceplate
Comcode
CC109170528
150037801
Accessories
Item
Description
Comcode
Power supply interface board
150037483
Isolated Interface Adapter Kit – interface between a USB port
and the I2C connector on the power supply interface board
150036482
Graphical User Interface download demonstrating the
redundant I2C capabilities of the power supply. The site below
downloads the GE Digital Power Insight™ software tools,
including the cpgui_l. When the download is complete, icons
for the various utilities will appear on the desktop. Click on
cpgui_l.exe
to start the program after the download
is complete.
http://apps.geindustrial.com/publibrary/checkout/Software%7
CCPSW-DPI%7Cgeneric
Graphical User Interface Manual; The GUI download created a
directory
that directory start the DPI_manual.pdf file.
In
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
http://www.geindustrial.com/products/critical-power
GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no liability is assumed
as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
November 22, 2019
©2014 General Electric Company. All International rights reserved.
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