GE-Emerson IC670ALG631 Field Control Thermocouple Module
Accepts 8 inputs from thermocouples and converts the input level of each to a digital value.
Overview
Features
- Each input individually configurable
- Scan time:
- 60Hz: approx. 60 milliseconds per point
- 50Hz: approx. 70 milliseconds per point
- Open thermocouple, underrange, overrange, and high/low alarm fault detection
- 60dB common mode rejection at 50/60Hz, 100 ohm imbalance
- 250 Vrms common mode voltage (350VDC or peak AC)
- 250VAC max. voltage between channels
- Normal mode voltage:
- 100% overrange DC or peak AC operational
- 28VDC or peak AC max.
- Isolation:
- User input to logic, user input to frame ground: 1500VAC for 1min, 250VAC continuous
- Channel to channel: 250VAC continuous
- 195mA max. current drawn from BIU power supply
- 15 bits digital resolution plus sign
- J, K, T, E, S, R, B, N, G, C, D, Platinel II thermocouple types
Description
The GE-Emerson IC670ALG631 Field Control Thermocouple Module defaults to the maximum negative temperature value for the configured Thermocouple type when configured for temperature and an open circuit fault is detected, and also defaults to the minimum millivolts for the configured Thermocouple type when configured for millivolts. It also sets the open circuit diagnostic bit.
The application program should continue to monitor the %I diagnostic bits to detect the presence of specific error conditions. The module does not require a separate power supply to operate.
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