ABB ControlIT 53MC5000 - Page 36

Table 1-8. Group 5B Isolation Module Specifications
Item Specification(s)
Isolation Module: 5B34 Group - Isolated RTD (Cont)
CMV, input to output:
Continuous
Transient
240 V rms
Meets IEEE - STD 472 (SWC).
CMR (50 or 60 Hz):
1 k ohms in either or both input leads
NMR (50 or 60 Hz)
160 db (all ranges)
60 db
Sensor excitement current:
100 ohms Pt, 120 ohms Ni
10 ohms Cu
0.25 mA
1.0 mA
Lead resistance effect:
100 ohms Pt, 120 ohms Ni
10 ohms Cu
Input protection: Continuous
±
0.02
°
C/ohm
±
0.2
°
C/ohm
240 V rms maximum continuous.
Isolation Module: 5B47 Group - Isolated Linearized Thermocouple
NOTE
Open thermocouple detection gives an upscale reading when the
option board jumper W-1 is in the B-C position. A downscale reading
is obtained when the jumper is in the A-B position.
Stability versus Ambient
Temperature:
Input offset
Gain
Input bias current
±
1
µ
V/
°
C (This is equivalent to 0.020
°
C
/°
C for J
thermocouples and 0.025
°
C
/°
C for K and T thermocouples.)
±
25 ppm of reading/
°
C
-25 nA
Input resistance:
Normal
Power off
Overload
5 M ohms
40 k ohms
40 k ohms
Noise:
Output, 100 k Hz
Bandwidth, -3 db
Rise Time, 10% to 90% span
500
µ
V rms RTO
4 Hz
0.2 seconds
CMV, input to output:
Continuous
Transient
240 V rms
Meets IEEE - STD 472 (SWC).
CMR (50 or 60 Hz):
1 k ohms in either or both input leads
NMR (50 or 60 Hz)
160 db (all ranges)
60 db
Input protection: Continuous 240 V rms maximum continuous.
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53MC5000 Process Control Station
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