Rockwell Automation T3431-CA ICS Regent Thermo Couple Input Assembly User Manual
Page 25

Thermocouple Input Assembly (T3431)
P D - 6 0 2 4 M a r - 0 6
25
Input to Chassis Resistance
1.1M ohm (typical)
Bias Current
100 nA (typical)
Common Mode Operating
Range
7 volts, maximum w/r chassis
ground
Input Over voltage
Protection
120 volts RMS between any
two terminals
Response Time (Total)
Step Input:
Ramp Input:
50 msec maximum (0 to 99%)
25 msec maximum tracking
delay for input rates less
than 8
°
C/ms (15
°
F)
Noise Rejection
(Conducted)
Normal Mode:
Common Mode:
70 dB minimum at 60/120
Hz or 50 Hz (jumper
selectable)
100 dB minimum at 50/60
Hz, 60 dB minimum
elsewhere
Noise Rejection
(Radiated)
Walkie-talkie:
0.1% (range) maximum error
for 1 watt at 1 foot from Mux
(any polarization)
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