Isolated Analog Signal Conditioning Products
S C M 5 B
SCM5B30/31
Analog Voltage Input Modules, Narrow Bandwidth
Description
Each SCM5B30 and SCM5B31 voltage input module provides a single
channel of analog input which is filtered, isolated, amplified, and converted to a high-level analog voltage output (Figure 1). This voltage output
is logic-switch controlled, allowing these modules to share a common
analog bus without the re uirement of external multiplexers.
Features
• Accepts Millivolt and Voltage Level Signals
• High-Level Voltage Outputs
The SCM5B modules are designed with a completely isolated computer
side circuit which can be oated to
from Power ommon, pin . This
complete isolation means that no connection is re uired between I O
Common and Power Common for proper operation of the output switch.
If desired, the output switch can be turned on continuously by simply
connecting pin , the Read nable pin, to I O ommon, pin .
• 1500Vrms Transformer Isolation
Signal filtering is accomplished with a six pole filter which provides dB
of normal-mode rejection at 60Hz and 90dB at 50Hz. Two poles of this
filter are on the field side of the isolation barrier, and the other four are on
the computer side.
• ± 0.03% Accuracy
After the initial field side filtering, the input signal is chopped by a
proprietary chopper circuit. Isolation is provided by transformer coupling,
again using a proprietary technique to suppress transmission of common
mode spikes or surges. The module is powered from +5VDC, ± 5%.
• ANSI/IEEE C37.90.1 Transient Protection
• Input Protected to 240VAC Continuous
• 160dB CMR
• 95dB NMR at 60Hz, 90dB at 50Hz
• ± 0.005% Linearity
Drift
SA
S ertified
• CE and ATEX Compliant
• Mix and Match SCM5B Types on Backpanel
A special input circuit on the SCM5B30 and SCM5B31 modules provides
protection against accidental connection of power-line voltages up to
240VAC.
F i g u r e 1 : S C M 5 B 3 0 / 3 1 B l o ck
D ia g r a m
6
©1995-2017 Dataforth Corporation, All Rights Reserved
For information call 800-444-7644
ISO9001:2008-Registered QMS
Specifications
Typical❇ at TA
Module
Input Range
Input Bias Current
Input Resistance
Normal
and
Ordering Information
D power
SCM5B30
SCM5B31
± 10mV to ± 1V
± 0.5nA
± 1V to ± 40V
± 0.05nA
thru
thru
thru
thru
thru
thru
Power Off
Overload
Input Protection
Continuous
Transient
CMV, Input to Output
Continuous
Transient
CMR (50Hz or 60Hz)
NMR
Accuracy(1)
Linearity
Stability
Input Offset
Output Offset
Gain
Noise
Input, 0.1 to 10Hz
Output, 100kHz
Bandwidth, – 3dB
Response Time, 90% Span
Output Range
Output Resistance
Output Protection
Output Selection Time
(to ± 1mV of VOUT)
Output Current Limit
Output nable ontrol
Max Logic “0”
Min Logic “1”
Max Logic “1”
Input Current “0,1”
240Vrms max
ANSI/IEEE C37.90.1
*
1500Vrms max
ANSI/IEEE C37.90.1
160dB
95dB at 60Hz, 90dB at 50Hz
*
*
*
*
*
± 0.03% Span
± 0.005% Span
ppm
.
rms
rms
4Hz
0.2s
*
*
Continuous Short to Ground
s at load = 0 to 2000pF
*
± 8mA
+0.8V
+2.4V
+36V
. A
– 10mV to +10mV
– 50mV to +50mV
– 100mV to +100mV
– 10mV to +10mV
– 50mV to +50mV
– 100mV to +100mV
– 1V to +1V
1, 2
1, 2
1, 2
3, 4
3, 4
3, 4
1, 2
SCM5B31-01
SCM5B31-02
SCM5B31-03
SCM5B31-04
SCM5B31-05
SCM5B31-06
SCM5B31-07
SCM5B31-08
SCM5B31-09
SCM5B31-10
– 1V to +1V
– 5V to +5V
10V to +10V
– 1V to +1V
– 5V to +5V
10V to +10V
20V to +20V
20V to +20V
40V to +40V
40V to +40V
1, 2
1, 2
1, 2
3, 4
3, 4
3, 4
1, 2
3, 4
1, 2
3, 4
1.
2. –
3.
4.
*
*
SCM5B30-01
SCM5B30-02
SCM5B30-03
SCM5B30-04
SCM5B30-05
SCM5B30-06
SCM5B30-07(3)
Output Range
*
See Ordering Information
Output Range†
–
–
–
–
–
–
Output Ranges Available
rms
*
Input Range
†
*
ppm
– 5V to +5V
10V to +10V
0V to +5V
0V to +10V
Part o u fi
NONE
D
NONE
D
am e
SCM5B30-01
SCM5B30-01D
SCM5B30-04
SCM5B30-04D
*
*
*
*
*
*
*
*
Power Supply Voltage
Power Supply Current
Power Supply Sensitivity
+5VDC ± 5%
30mA
RTI(2)
Mechanical Dimensions
(h)(w)(d)
2.28” x 2.26” x 0.60”
(58mm x 57mm x 15mm)
*
to
to
0 to 95% Noncondensing
ISM, Group 1
Class A
ISM, Group 1
Performance A ± 0.5% Span Error
Performance B
*
Environmental
Operating Temp. Range
Storage Temp. Range
Relative Humidity
Emissions EN61000-6-4
Radiated, Conducted
Immunity EN61000-6-2
RF
ESD,EFT
Model
*
RTI(2)
*
*
*
*
*
*
*
NOTES:
❇
ontact factory or your local Dataforth sales office for maximum values.
Same specification as S
B .
Includes linearity, hysteresis and repeatability.
(2) RTI = Referenced to input.
Same as S
B
with
input resistance.
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©1995-2017 Dataforth Corporation, All Rights Reserved
7
ISO9001:2008-Registered QMS
S C M 5 B
S C M 5 B
Isolated Analog Signal Conditioning Products