Emerson ROC364 - I;O Module Specifications

ROC364 Instruction Manual
3-30 Input and Output Modules Rev Jun/05
7. If you changed the configuration, including the history database, FSTs, and ROC Displays, save
them to disk. Refer to Section 2, Troubleshooting and Repair, for more information on
performing saves.
3.7 I/O Module Specifications
The specifications for the various I/O modules are given in this section.
3.7.1 Analog Input Modules—Loop and Differential
Analog Input Loop Module Specifications
FIELD WIRING TERMINALS
A: Loop Power (+T).
B: Analog Input (+).
C: Common (–).
INPUT
Type: Single-ended, voltage sense. Current loop
with scaling resistor (R1).
Loop Current: 0 to 25 mA maximum range. Actual
range depends on scaling resistor used.
Voltage Sensing: 0 to 5 V dc, software configured.
Accuracy: 0.1% of full scale at 20 to 30°C (68 to
86°F). 0.5% of full scale at –40 to 70°C (–40 to
158°F).
INPUT (CONTINUED)
Impedance: Greater than 400 kΩ (without scaling
resistor).
Normal Mode Rejection: 50 dB @ 60 Hz.
POWER REQUIREMENTS
Loop Source: 25 mA maximum, from ROC power
supply (V
s
= 11 to 30 V dc).
Module: 4.9 to 5.1 V dc, 6 mA maximum; –4.5 to –
5.5 V dc, 2 mA maximum (supplied by ROC).
ISOLATION
Not isolated. Terminal C tied to power supply
common.
Analog Input Differential Module Specifications
FIELD WIRING TERMINALS
A: Not used.
B: Positive Analog Input (+).
C: Negative Analog Input (–).
INPUT
Type: Voltage sense. Externally-powered current
loop sensing with scaling resistor (R1).
Voltage: 0 to 5 V dc, software configured.
Accuracy: 0.1% of full scale at 20 to 30°C (68 to
86°F). 0.5% of full scale at –40 to 70°C (–40 to
158°F).
INPUT (CONTINUED)
Normal Mode Rejection: 50 dB @ 60 Hz.
Impedance: Greater than 400 kΩ (without scaling
resistor).
POWER REQUIREMENTS
4.9 to 5.1 V dc, 6 mA maximum; –4.5 to –5.5 V dc,
2 mA maximum (supplied by ROC).
INPUT ISOLATION
Greater than 400 kΩ input to power supply
common.