YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
REDUNDANCY MODULE
Cost Effective Solution to Build Redundant Systems
Dual Input with Single Output
Alarm Relay-contacts for Each Input Path
Two Diodes (Common Cathode)
DC 24-48V ±25% (18-60Vdc) Wide-range Input
Full Power Between -40°C and +60°C
Width only 32mm
Rugged Metal Housing
Large Screw Terminals
Easy Wiring:
Distribution Terminal for Negative Pole Included
3 Year Warranty
PRODUCT DESCRIPTION
SHORT-FORM DATA
The YRM2.DIODE is a redundancy module, which can be
used to build 1+1 and N+1 redundant systems. It is
equipped with two input channels, which can be connected
to power supplies with up to 10A output current and one
output, which can carry nominal currents up to 20A. The
module is suitable for power supplies with constant current
overload behavior as well as any kind of “Hiccup” overload
behavior.
Input voltage
Input voltage range
Input current
The YRM2.DIODE has a monitoring circuit included and is
the perfect solution when the power supply has no DC-OK
function. Two LEDs and two relay contacts signal when one
of the two DC-input voltages is not in range due to a nonfunctioning or disconnected power supply.
Input to output
voltage drop
In addition to the YRM2.DIODE is the YR2.DIODE which has
no monitoring circuitry included. This is the perfect fit
when the power supply itself is already equipped with a
DC-OK signal (e.g.: DIMENSION Q-Series).
Large screw terminals allow an easy installation and a huge
international approval package for a variety of applications
makes this unit suitable for nearly every situation.
ORDER NUMBERS
Output current
DC 24-48V
18-60Vdc
2x 0-10A
2x 0-16A
0-20A
20-32A
25A
Temperature range
Derating
Dimensions
typ. 0.78V
typ. 0.85V
typ. 0.85V
typ. 1.0W
typ. 8.8W
typ. 9.5W
typ. 18W
-40°C to +70°C
0.5A/°C
32x124x117mm
Weight
350g / 0.77lb
Power losses
±25%
continuous
for 5 seconds
continuous
for 5 seconds
at cont. overload/
short circuit
input: 2x5A
input: 1x10A
input: 2x10A
at no load
input: 2x5A
input: 1x10A
input: 2x10A
operational,
+60 to +70°C
WxHxD
MAIN APPROVALS
For details and the complete approval list, see chapter 15.
Redundancy
Module
YRM2.DIODE
DC 12-48V
Accessory
ZM1.WALL
Wall/ panel mount bracket
ZM11.SIDE
Side mount bracket
UL 508
UL 60950-1
Class I Div 2
ATEX
IECEx
Marine
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
INDEX
Page
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Intended Use .......................................................3
Installation Instructions ......................................3
Input and Output Characteristics .......................5
Power Losses ........................................................6
Alarm Contacts ....................................................6
Lifetime Expectancy and MTBF...........................7
Terminals and Wiring ..........................................8
Functional Diagram .............................................9
Front Side and User Elements .............................9
EMC ....................................................................10
Environment ......................................................11
Protection Features ...........................................12
Safety Features ..................................................12
Dielectric Strength ............................................12
Approved, Fulfilled or Tested Standards..........13
Regulatory Product Compliance .......................14
Page
17. Physical Dimensions and Weight ..................... 15
18. Accessories ........................................................ 16
18.1. ZM1.WALL - Wall mounting bracket ....... 16
18.2. ZM11.SIDE - Side mounting bracket ........ 16
19. Application Notes ............................................. 17
19.1. Recommendations for Redundancy......... 17
19.2. Inductive and Capacitive Loads................ 17
19.3. Example: 1+1 Redundancy up to 10A ...... 17
19.4. Example: N+1 Redundancy up to 30A ..... 18
19.5. Example: Battery Back-up ........................ 18
19.6. Example: Redundancy for Controls ......... 19
19.7. Example: Decoupling of Branches ........... 20
19.8. Use in a Tightly Sealed Enclosure ............ 20
19.9. Mounting Orientations ............................ 21
The information presented in this document is believed to be accurate and reliable and may change without notice.
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
TERMINOLOGY AND ABREVIATIONS
PE and
symbol
PE is the abbreviation for Protective Earth and has the same meaning as the symbol
.
t.b.d.
To be defined, value or description will follow later.
DC 24V
A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
24Vdc
A figure with the unit (Vdc) at the end is a momentary figure without any additional
tolerances included.
may
A key word indicating flexibility of choice with no implied preference
shall
A key word indicating a mandatory requirement
should
A key word indicating flexibility of choice with a strongly preferred implementation
1+1 Redundancy
Use of two identical power supplies in parallel to provide continued operation following most
failures in a single power supply. The two
N+1
1+1
Redundancy
Redundancy
power supply outputs should be isolated
AC
AC
AC
AC
AC
AC
AC
AC
from each other by utilizing diodes or
other switching arrangements.
DC
DC
DC
DC
DC
DC
DC
DC
E.g. two 10A power supplies are needed to
achieve a 10A redundant system.
IN 1 IN 2
IN 1 IN 2
IN 1 IN 2
IN 1 IN 2
N+1 Redundancy
Use of three or more identical power
supplies in parallel to provide continued
OUT
OUT
OUT
OUT
operation following most failures in a
single power supply. All power supply
Load
Load
outputs should be isolated from each other
by utilizing diodes or other switching
arrangements. E.g.: To achieve a 40A redundant system, five 10A power supplies are needed in
a N+1 redundant system.
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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+
This document uses the term “earth” which is the same as the U.S. term “ground”.
+
Earth, Ground
2/21
YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
1. INTENDED USE
This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control,
process control, monitoring and measurement equipment or the like. Do not use this device in equipment where
malfunction may cause severe personal injury or threaten human life.
The redundancy module can be used with any type of power supply as long as the maximum output current ratings
are not exceeded. It is suitable for power supplies with continuous overload current as well as any kind of intermittent
(Hiccup) overload behavior.
2. INSTALLATION INSTRUCTIONS
WARNING
-
Risk of electrical shock, fire, personal injury or death.
Turn power off before working on the device and protect against inadvertent re-powering.
Do not open, modify or repair the device.
Use caution to prevent any foreign objects from entering into the housing.
Do not use in wet locations or in areas where moisture or condensation can be expected.
Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.
Obey the following installation instructions:
This device may only be installed and put into operation by qualified personnel.
This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
Install the device in an enclosure providing protection against electrical, mechanical and fire hazards.
Do not ground or earth the positive output pole which could prevent redundancy in case of a ground failure. Ground
the negative output pole, when needed.
Use only power supplies with a negligible output ripple voltage in the low frequency range between 50Hz and 10kHz
when used in marine applications according to the GL regulations.
Install the device onto a DIN rail according to EN 60715 with the input terminals on the top of the device. Other
mounting orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are
designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient
temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire
enter the terminal connection.
Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
The enclosure of the device provides a degree of protection of IP20.
The input must be powered from a PELV or SELV source or an “Isolated Secondary Circuit” in order to maintain a SELV
or PELV output.
Check correct input polarity. The device will not operate when input voltage is reversed.
The device is designed as “Class of Protection III” equipment according to IEC 61140.
A PE (ground) connection is not required. However, connecting the chassis ground terminal to ground can be
beneficial to gain a high EMI immunity.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not
cover ventilation grid!
The device is designed for altitudes up to 6000m (19685ft). See additional requirements in the product datasheet for
use above 2000m (6560ft).
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side.
Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device is permanently loaded with
less than 50%, the 5mm can be reduced to zero.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient
or surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.
Installation Instructions for Hazardous Location Areas
The device is suitable for use in Class I Division 2 Groups A, B, C, D locations and for use in Group II Category 3 (Zone 2)
environments.
Hazardous Location classification: ATEX: EPS 11 ATEX 1 312 X, II 3G EX ec nC IIC T4 Gc
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment.
Do not disconnect the device unless power has been switched off or the area is known to be non-hazardous.
A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the
requirements of the EN 60079-0.
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
3. INPUT AND OUTPUT CHARACTERISTICS
Number of inputs
Number of outputs
Input voltage
Input voltage range
Voltage drop, input to output
Input current
Peak input current
Output current
Reverse current
Reverse voltage
Note 1:
Note 2:
nom.
2
1
DC 24-48V
typ.
typ.
typ.
nom.
nom.
nom.
max.
nom.
nom.
max.
max.
max.
18-60Vdc
0.78V
0.85V
0.85V
2x 0-10A
1x 0-20A
2x 10-16A
150A
20A
20-32A
25A
2mA
200Vdc
±25%
The input circuitry must meet the SELV requirements
stipulated by IEC/EN/UL 60950-1.
at 2x5A, see Fig. 3-1
at 1x10A, see Fig. 3-2
at 2x10A, see Fig. 3-1
continuous
continuous, see note 1
for up to 5 seconds
for maximal 10ms per input
continuous
for up to 5 seconds
at continuous overload or short circuit, see note 2
per input, -40°C to +60°C
voltage applied to the output, continuously allowed
Each input can be loaded up to 20A. At currents above 10A, the other input should not be loaded. It is preferable to parallel the two
inputs in order to minimize the power loss in such cases.
Ensure that the continuous output current does not exceed 25A. Check the short-circuit current of the power sources and if the
power source can deliver more than 25A together, use an appropriate fuse on the output.
Fig. 3-1 Input to output voltage drop when both inputs draw current
(typical 1+1 redundant case, when the output voltages of the two units are equal or set into “parallel use” mode)
Voltage Drop, typ.
QS/QT10
1000mV
I1
A
24V,10A
+
800mV
A
B
600mV
-
A... 25°C
B... 60°C
400mV
V U1
QS/QT10
+
Input, Output Current
0mV
Output: 0
Input: 0
5A
2x2.5A
10A
2x5A
15A
20A
2x7.5A 2x10A
-
Input 1
Output
V U2
Variable
Load,
0-20A
UOUT V
Input 2
U1 = U2
I1 = I2
IOUT
A
I2
A
24V,10A
200mV
Output
YR2 / YRM2
Voltage Drop = U1 - UOUT
Fig. 3-2 Input to output voltage drop when only one input draws current
QS/QT20
Voltage Drop, typ.
I1
A
24V,20A
1000mV
+
800mV
A
-
B
V U1
Output
YR2 / YRM2
Input 1
IOUT
A
Output
Variable
Load,
0-20A
UOUT V
600mV
A... 25°C
B... 60°C
400mV
200mV
Output Current
0mV
0
5A
10A
15A
Not used or
power supply
with lower
voltage
Input 2
20A
Voltage Drop = U1 - UOUT
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
4. POWER LOSSES
Power losses
DC 24V
8.8W
9.5W
18.0W
1.0W
typ.
typ.
typ.
typ.
Standby power losses
input: 2x5A
input: 1x10A
input: 2x10A
at no output current
Fig. 4-1 Power losses
Power Losses, typ.
24W
20
16
12
8
4
Output Current
0
0
5
10
20
15
25A
5. ALARM CONTACTS
Both input voltages are monitored individually. If one input voltage is too low or completely lost, it will be indicated
by an alarm relay contact.
Each input has its own monitoring circuitry and relay contact.
21.5V (±0.5V)
Alarm threshold
nom.
Contact ratings
60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A
min.
1mA at 5Vdc
max.
see dielectric strength table in section 14.
Isolation voltage
Relay contact opens immediately after
the input voltage falls below this value.
input: 1x10A
input: 2x10A
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
6. LIFETIME EXPECTANCY AND MTBF
The redundancy module has two input channels which are completely independent from each other. Each control
circuit, auxiliary voltage source, or other circuitry in the module are designed separately for each input. The dual input
redundancy module can be considered as two single redundancy modules combined together in one housing. The only
common point is the circuit trace that ties the two separate circuits together at the output.
The MTBF figures below are for the entire dual input module. If the MTBF number of only one path is needed, simply
double the value from the table.
The redundancy module does not have electrolytic capacitors included. Therefore, the lifetime expectancy is extremely
high.
Input / output
current conditions
Lifetime expectancy *)
MTBF **) SN 29500, IEC 61709
MTBF **) MIL HDBK 217F
min.
min.
Input: 2x10A
Output: 20A
25 years
25 years
9 100 000h
15 700 000h
9 200 000h
12 600 000h
3 380 000h
4 630 000h
Input: 2x5A
Output: 10A
25 years
25 years
10 900 000h
18 800 000h
11 100 000h
15 100 000h
4 060 000h
5 570 000h
at 24V and 40°C
at 24V and 25°C
at 24V 40°C
at 24V 25°C
at 24Vand 40°C (Ground Benign GB40)
at 24Vand 25°C (Ground Benign GB25)
at 24Vand 40°C (Ground Fixed GF40)
at 24Vand 25°C (Ground Fixed GF25)
*) The Lifetime expectancy shown in the table indicates the minimum operating hours (service life).
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
7. TERMINALS AND WIRING
Type
Solid wire
Stranded wire
American Wire Gauge
Max. wire diameter
Wire stripping length
Screwdriver
Recommended tightening torque
Input and output terminals
Screw terminals
IP20 Finger safe construction.
Suitable for field installation.
0.5-6mm2
0.5-4mm2
20-10 AWG
2.8mm (including ferrule)
7mm / 0.28inch
3.5mm slotted or Pozidrive No 2
0.8Nm / 7lb.in
Alarm-signal terminals
Screw terminals, pluggable
IP20 Finger safe construction.
Suitable for field installation.
0.2-1.5mm2
0.2-1.5mm2
22-14 AWG
6mm / 0.25inch
3mm slotted
0.4Nm / 3.5lb.in
Instructions:
a) The external circuitry of all terminals (including signalling contacts) must meet the safety requirements stipulated by
IEC/EN/UL 60950-1: SELV.
b) Use appropriate copper cables that are designed for minimum operating temperatures of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C minimum.
c) Follow national installation codes and installation regulations!
d) Ensure that all strands of a stranded wire enter the terminal connection!
e) Screws of unused terminal compartments should be securely tightened.
f) Ferrules are allowed.
g) Do not connect or disconnect the wires from the terminals below -25°C (-13°F).
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
8. FUNCTIONAL DIAGRAM
Fig. 8-1 Functional diagram
Input
Voltage
Monitor
Input 1
ok
Input 1
Input 1
Alarm
contact
Alarm
Relay
+
-
+
-
Chassis
Ground
+
Input 2
Input
Voltage
Monitor
Input 2
ok
Output
Alarm
Relay
Input 2
Alarm
contact
9. FRONT SIDE AND USER ELEMENTS
Fig. 9-1 Front side
A
Output terminals
B
Chassis ground terminal
Connection of the chassis to ground is optional and not required since the unit
fulfils the requirements according to protection class III.
C
Input terminals for input 1
D Input terminals for input 2
E
Alarm-signal terminals for input 1 monitoring (relay contact)
F
Alarm-signal terminals for input 2 monitoring (relay contact)
G Green LED for input 1 (LED is on, when input voltage is in range)
H Green LED for input 2 (LED is on, when input voltage is in range)
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
10. EMC
The redundancy module is suitable for applications in industrial environment as well as in residential, commercial and
light industry environment without any restrictions. A detailed EMC report is available on request.
EMC Immunity
Electrostatic discharge
Electromagnetic RF field
Fast transients (Burst)
Surge voltage on input lines
Surge voltage on output lines
Surge voltage on
alarm contacts
Conducted disturbance
Power-frequency magnetic
field *)
According generic standards: EN 61000-6-1 and EN 61000-6-2
Contact discharge
8kV
EN 61000-4-2
Air discharge
15kV
EN 61000-4-3
80MHz-2.7GHz
10V/m
Input lines
2kV
EN 61000-4-4
Output lines
2kV
Alarm contacts
2kV
EN 61000-4-5
1kV
+/- Chassis ground
EN 61000-4-5
1kV
+/- Chassis ground
EN 61000-4-5
Alarm contact Chassis ground
1kV
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
EN 61000-4-6
EN 61000-4-8
Criterion A
Criterion A
0.15-80MHz
50Hz
10V
30A/m
Criterions:
A: Redundancy module shows normal operation behavior within the defined limits.
Notes:
*) A test is not applicable according to EN 61000-6-2, since the device does not contain components susceptible to magnetic fields, e.g. hall
elements, electrodynamic microphones, etc.
According generic standards: EN 61000-6-3 and EN 61000-6-4
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
Class B, input lines *)
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
Class B, output lines *)
Radiated emission
EN 55011, EN 55032
Class B
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
EMC Emission
Conducted emission
*)
Provided, that power sources connected on the inputs fulfill the class B requirements too.
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
11. ENVIRONMENT
Operational temperature *)
Output derating
Storage temperature
Humidity **)
Vibration sinusoidal ***)
Shock ***)
Altitude
-40°C to +70°C (-40°F to 158°F)
0.5A/°C
-40 to +85°C (-40°F to 185°F)
5 to 95% r.H.
2-17.8Hz: ±1.6mm
17.8-500Hz: 2g
2 hours / axis
30g 6ms, 20g 11ms
3 bumps / direction
18 bumps in total
0 to 6000m (0 to 6 560ft)
2000 to 6000m (6 560 to 20 000ft)
Altitude derating
Over-voltage category
1.25A/1000m or 5°C/1000m
not applicable
Degree of pollution
2
Reduce output power above +60°C
60-70°C (140°F to 158°F), see
for storage and transportation
IEC 60068-2-30
IEC 60068-2-6
IEC 60068-2-27
without any restrictions
reduce output power or ambient temperature,
see Fig. 11-2
> 2000m (6500ft), see Fig. 11-2
The concept of the overvoltage category is
used for equipment energized directly from
the low voltage mains (IEC 60664-1 §4.3.3.2.1).
IEC 62103, EN 50178, not conductive
*) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit.
**) Do not energize while condensation is present
***) Tested in combination with DIN rails according to EN 60715 with a height of 15mm and a thickness of 1.3mm and standard mounting
orientation.
Fig. 11-1 Output current vs. ambient temp.
Allowed Output Current
30A
25
Allowed Output Current
30A
at overload / short circuit
20
Fig. 11-2 Output current vs. altitude
normal mode
15
10
10
5
5
Ambient Temperature
0
20
normal mode
20
15
0
-40 -25
overload / short circuit
25
40
A
A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 40°C
0
2000
C
Altitude
0
60 70°C
B
4000
6000m
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
12. PROTECTION FEATURES
Output over-current protection
Reverse input polarity protection
Degree of protection
Penetration protection
Over-temperature protection
Input transient protection
Output transient protection
Internal input fuse
not included
included
IP 20
> 3.6mm
not included
not included
included
not included
unit does not start when input voltage is reversed
EN/IEC 60529
e.g. screws, small parts
see EMC chapter
13. SAFETY FEATURES
Input / output separation
Safety level of output voltage
Class of protection
PE resistance
no galvanic separation
200V epitaxial diode between input and output
The output voltage is regarded to be SELV (EN 60950-1) or PELV (EN 60204-1, EN
50178, IEC 60364-4-41) if the input voltage and the voltage which is applied to the
alarm contacts fulfil the requirements for a SELV source or PELV source.
III
PE (Protective Earth) or chassis connection not required
< 0.1Ohm
between housing and chassis-ground terminal
14. DIELECTRIC STRENGTH
The input and output voltages have the same reference, are floating and have no ohmic connection to ground.
Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the
appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down). Connect
input/output/signal terminals together before conducting the test.
When testing, set the cut-off current settings to the value in the table below.
Type test
60s
A
500Vac
B
500Vac
Factory test
5s
500Vac
500Vac
Field test
5s
500Vac
500Vac
Fig. 14-1 Dielectric strength
In- / Output
+
A
B
B
-
Chassis
Cut-off current setting
> 2mA
DC-ok
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
Y-Series
DC24-48V, 20A, DUAL REDUNDANCY MODULE
15. APPROVED, FULFILLED OR TESTED STANDARDS
UL 508
IEC 60950-1
UL 60950-1
ATEX
IECEx
Class I Div 2
Marine (DNV)
Marine (ABS)
IEC 60068-2-60
UL Certificate
Listed equipment for category NMTR - Industrial Control
Equipment
Applicable for US and Canada
E-File: E198865
CB Scheme Certificate
General safety requirements for Information Technology
Equipment (ITE)
UL Certificate
Recognized component for category QQGQ - Information
Technology Equipment (ITE)
Applicable for US and Canada
E-File: E137006
Agency Certificate (Bureau Veritas)
EN 60079-0 Explosive atmospheres - General requirements
EN 60079-7, EN 60079-15 Equipment protection by type of
protection "e" and "n"
Certificate: EPS 11 ATEX 1 312 X
Temperature Code: T4
Type of Protection: ec nC
IECEx Certificate
IEC 60079-0 Explosive atmospheres - General requirements
IEC 60079-7, IEC 60079-15 Equipment protection by type of
protection "e" and "n"
Certificate: IECEx EPS 12.0032 X
Temperature Code: T4
Type of Protection: ec nC
CSA Certificate
Power Supplies for Hazardous Location
Applicable for Canada and US
CSA Class: 5318-01 (Canada), 5318-81 (USA)
Temperature Code: T4
Groups: A, B, C and D
DNV Certificate
DNV Type approved product
Certificate: TAA00001ST
Temperature: Class D
Humidity: Class B
Vibration: Class C
EMC: Class A
Enclosure: Class A
ABS Design Assessment Certificate
ABS (American Bureau of Shipment) assessed product
Certificate: 17-HG1599236-PD
Manufacturer's Declaration (Online Document)
Environmental Tests, Flowing Mixed Gas Corrosion Test
Test Ke - Method 4
H2S: 10ppb
NO2: 200ppb
Cl2: 10ppb
SO2: 200ppb
Test Duration: 3 weeks, which simulates a service life of 10 years.
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
Y-Series
ISA-71.04 G3
VDMA 24364
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Manufacturer's Declaration (Online Document)
Airborne Contaminants Corrosion Test
Severity Level: G3 Harsh
H2S: 100ppb
NOx: 1250ppb
Cl2: 20ppb
SO2: 300ppb
Test Duration: 3 weeks, which simulates a service life of 10 years
Paint Wetting Impairment Substances Test (or LABS-Test)
Tested for Zone 2 and test class C1 according to VDMA 24364-C1L/W for solvents and water-based paints
16. REGULATORY PRODUCT COMPLIANCE
EU Declaration of
Conformity
REACH Directive
WEEE Directive
KC Korean Certificate
EAC TR Registration
The CE mark indicates conformance with the
- EMC directive
- ATEX directive
- RoHS directive
Manufacturer's Statement
EU-Directive regarding the Registration, Evaluation,
Authorization and Restriction of Chemicals
Manufacturer's Statement
EU-Regulation on Waste Electrical and Electronic Equipment
Registered in Germany as business to business (B2B) products.
KC Registration
Korean registration of Broadcasting and Communication
Equipment
Registered under Clause 3, Article 58-2 of Radio Waves Act.
EAC Certificate
EAC EurAsian Conformity - Registration Russia, Kazakhstan and
Belarus
8504408200, 8504409000
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
17. PHYSICAL DIMENSIONS AND WEIGHT
Weight
DIN rail
Installation clearances
350g / 0.77lb
Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
The DIN rail depth must be added to the unit depth (117mm) to calculate the total required
installation depth.
See chapter 2
Fig. 17-1 Front view
Fig. 17-2 Side view
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
18. ACCESSORIES
18.1. ZM1.WALL - WALL MOUNTING BRACKET
This standard bracket is used to mount the YR40 redundancy module onto a flat surface without utilizing a DIN rail.
Fig. 18-1 ZM1.WALL Wall mounting bracket
Fig. 18-2 Assembled wall mounting bracket
18.2. ZM11.SIDE - SIDE MOUNTING BRACKET
This bracket is used to mount the YR80 redundancy module sideways with or without utilizing a DIN rail.
The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can
be mounted.
For sideway DIN rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on
the steel bracket.
Fig. 18-3
ZM11.SIDE Side mounting bracket
Fig. 18-4
Side mounting with DIN rail brackets
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
19. APPLICATION NOTES
19.1. RECOMMENDATIONS FOR REDUNDANCY
Recommendations for the configuration of redundant power systems:
•
Use separate input fuses for each power supply.
•
Use three-phase power supplies to gain functional safety if one phase fails.
•
When single-phase power supplies are utilized connect them to different phases or mains circuits if possible.
•
Set the power supply in “Parallel-Use” mode if this feature is available
•
It is desirable to set the output voltages of all power supplies to the same value.
19.2. INDUCTIVE AND CAPACITIVE LOADS
The unit is designed to supply any kind of loads, including unlimited capacitive and inductive loads.
19.3. EXAMPLE: 1+1 REDUNDANCY UP TO 10A
1+1 Redundancy up to 10A requires two 10A power supplies and one YRM2.DIODE redundancy module.
Fig. 19-1 Wiring diagram, 1+1 Redundancy, 10A output current
Failure
Monitor
+ + - 24V, 10A
+ - + IN 1 IN 2 IN 1 IN 2
+ + - 24V, 10A
10A
Power Supply
YRM2.DIODE
10A
Power Supply
L N PE
OUT
+ -
L N PE
optional
I
I
10A
Load
L
N
PE
Note: Use separate mains systems for each power supply whenever it is possible
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
19.4. EXAMPLE: N+1 REDUNDANCY UP TO 30A
N+1 Redundancy up to 30A requires four 10A power supplies and two YRM2.DIODE redundancy modules.
Fig. 19-2 Wiring diagram, n+1 Redundancy, 30A output current
Failure
Monitor
+ + - 24V, 10A
+ - + IN 1 IN 2 IN 1 IN 2
+ + - 24V, 10A
+ + - 24V, 10A
+ - + IN 1 IN 2 IN 1 IN 2
+ + - 24V, 10A
10A
Power Supply
YRM2.DIODE
10A
Power Supply
10A
Power Supply
YRM2.DIODE
10A
Power Supply
L N PE
L N PE
L N PE
OUT
+ -
OUT
+ -
L N PE
optional
optional
I
I
I
I
L
N
PE
30A
Load
Note: Use separate mains systems for each power supply whenever it is possible
19.5. EXAMPLE: BATTERY BACK-UP
A battery back-up with 10A requires one 10A power supply and one YRM2.DIODE redundancy module.
Please note:
Set output voltage of power supply to 26.5Vdc minimum to ensure, that the load current is delivered from the power
supply and not from charger (battery). Use a fuse between battery and YRM2.DIODE!
Fig. 19-3 Wiring diagram, 10A Battery back-up
Failure
Monitor
24V Battery
+
I
-
+ + - 24V, 10A
+ - + IN 1 IN 2 IN 1 IN 2
10A
Power Supply
YRM2.DIODE
Battery
Charger
OUT
+ -
L N PE
L
N
PE
optional
10A
Load
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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18/21
YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
19.6. EXAMPLE: REDUNDANCY FOR CONTROLS
The example shows a cost effective solution to get redundant power for a PLC or controller system.
In many cases, two power supplies are used; one for the demanding loads and another one for the controls and
sensitive loads. The power supply for the demanding loads can be used as a redundant source to supply the controls.
Traditional approach:
Improved approach:
PS1
Load
PS2
PLC
PS1
Load
YR2
PS2
PLC
Fig. 19-4 Wiring diagram, redundancy for sensitive loads
Failure
Monitor
Heavy
Loads
e.g. Motors
+ + - 24V, 20A
+ - + IN 1 IN 2 IN 1 IN 2
+ + - 24V, 5A
20A
Power Supply
YRM2.DIODE
5A
Power
Supply
OUT
+ -
L1 L2 L3 PE
I
L1
L2
L3
N
PE
I
L N PE
I
optional
Sensitive
Load
e.g.
Controller
I
Note: Use separate mains systems for each power supply whenever it is possible
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
19.7. EXAMPLE: DECOUPLING OF BRANCHES
Buffer energy supplied from a DC-UPS or buffer module is not wasted in “power branches”.
Please note:
Set output voltage of the power supply to a level that the buffer unit or DC-UPS will not start unexpected. Take the
voltage drop of the YRM2.DIODE into account.
Fig. 19-5 Wiring diagram, decoupling of buffered branches
Failure
Monitor
Load
e.g. Motor
+ + - 24V, 10A
+ - + IN 1 IN 2 IN 1 IN 2
10A
Power Supply
YRM2.DIODE
L N PE
I
I
Buffer
Module
OUT
+ Buffered
Load
e.g.
Controller
I
L1
L2
L3
PE
optional
Note: Use separate mains systems for each power supply whenever it is possible
19.8. USE IN A TIGHTLY SEALED ENCLOSURE
When the redundancy module is installed in a tightly sealed enclosure, the temperature inside the enclosure will be
higher than outside. The inside temperature defines the ambient temperature for the redundancy module.
Results from such an installation:
Power supply is placed in the middle of the box, no other heat producer inside the box
Enclosure:
Load:
Input:
Temperature inside enclosure:
Temperature outside enclosure:
Temperature rise:
Rittal Typ IP66 Box PK 9516 100, plastic, 110x180x165mm
24V, 16A; (=80%) load is placed outside the box
24Vdc
58.8°C (in the middle of the right side of the power supply with a distance of 2cm)
24.6°C
34.2K
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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YRM2.DIODE
DC24-48V, 20A, DUAL REDUNDANCY MODULE
Y-Series
19.9. MOUNTING ORIENTATIONS
Mounting orientations other than input terminals on the bottom and output on the top require a reduction in
continuous output power or a limitation in the maximum allowed ambient temperature.
Fig. 19-6
Mounting
Orientation A
(Standard
orientation)
Output Current
INPUT
20A
16
12
8
4
0
10
Redundancy
Module
OUTPUT
Fig. 19-7
Mounting
Orientation B
(Upside down)
20
30
40
50
60°C
Output Current
OUTPUT
20A
16
12
8
4
0
10
Redundancy
Module
INPUT
Fig. 19-8
Mounting
Orientation C
(Table-top
mounting)
Ambient Temperature
20
30
40
50
60°C
Output Current
20A
16
12
8
4
0
10
Ambient Temperature
20
30
40
50
60°C
Output Current
INPUT
Fig. 19-10
Mounting
Orientation E
(Horizontal ccw)
Redundancy
Module
OUTPUT
20A
16
12
8
4
0
10
Ambient Temperature
20
30
40
50
60°C
OUTPUT
INPUT
Output Current
Redundancy
Module
Fig. 19-9
Mounting
Orientation D
(Horizontal cw)
Ambient Temperature
20A
16
12
8
4
0
10
Ambient Temperature
20
30
40
50
60°C
Jul. 2021 / Rev. 1.6 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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