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

Page 25

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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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