ABB SM3000 User Manual page 128

SM3000
Multipoint Videographic Recorder
Analog Input Modules
General
Number of inputs
6 per board, max. of 36 inputs
Input types
Milliamps, millivolts, voltage, resistance, THC, RTD, digital input*
* Digital input is not available on high specification analog input
modules
Digital input types
Type Volt-free contact
Minimum pulse duration 1 s
Thermocouple types
B, E, J, K, L, N, R, S, T
Resistance thermometer
PT100
Other linearizations
x, x
3 5
/ , x / , custom linearization
2 2
Digital filter
Programmable 0 to 60 s
Display range
—999 to 9999
Common mode noise rejection
> 120 dB at 50/60 Hz with 300  imbalance resistance
Normal (series) mode noise rejection
> 60 dB at 50/60 Hz
Standard/High Specification Analog Input Modules
Linear Inputs
Millivolts 0 to 2000 mV
Milliamps 0 to 50 mA
Volts 0 to +20 V*
Resistance  0 to 5000 
100 ms per sample (2 modules are processed in
parallel) gives worst case update times as follows:
600 ms for 6 or 12 channels — mV, mA, voltage
Sample Interval
800 ms for 6 or 12 channels — THC
1100 ms for 6 or 12 channels — resistance, RTD
Input Isolation 35 V DC channel-to-channel
Isolation from Rest
Galvanically isolated to 500 V DC
of Instrument
*Requires external voltage divider board Part No. GR2000/0375
126
Standard Analog Input
CJC rejection ratio
0.05 ºC/ºC
Sensor break protection
Programmable as upscale or downscale
Temperature stability
0.02 %/ºC or 2 µV/ºC
Long term drift
< 0.2 % of reading or 20 µV annually
Input impedance
> 10 M (millivolts inputs)
500 k (voltage inputs) externally mounted divider
10  (mA inputs) externally mounted on terminals*
* Hart transmitters require a minimum 250  loop impedance. A
250  shunt resistor can be used together with the voltage divider
board (GR2000/0375) to meet this requirement. In such cases the
input should be programmed for 1 to 5 V.
Analog to digital converter resolution
16 bit
High Specification Analog Input
—1000 to +1000 mV
—100 to +100 mA
—50 to +50 V*
0 to 2000 
100 ms per sample (2 modules are processed in parallel) gives worst
case update times as follows:
100 ms for 6 or 12 channels — all input types
500 V DC channel-to-channel
Galvanically isolated to 500 V DC
8 Specification
Accuracy
(% of reading)
0.1 % or ± 10 µV
0.2 % or ± 2 µA
0.2 % or ± 10 mV
0.2 % or ± 0.08 
IM/SM3000–EN Rev. L