GE IC694MDL645A Discrete DC Input Module

FAQ

Q1: What is the GE Fanuc IC694MDL645A used for?
The IC694MDL645A is used in PACSystems RX3i PLC applications to collect digital ON/OFF signals from field devices such as switches, sensors, and proximity detectors and send the status information to the PLC CPU.

Q2: How many input channels does the IC694MDL645A provide?
The module provides 16 digital input points arranged in one group with a single common terminal. Each input channel has an individual LED indicator for status monitoring.

Q3: What voltage level does the IC694MDL645A support?
The module is designed for 24 VDC input signals and supports an input range from 0 to +30 VDC.

Q4: Can the IC694MDL645A work with both positive and negative logic devices?
Yes. The IC694MDL645A can be wired for either positive logic (sourcing) or negative logic (sinking) input applications, providing flexibility for different field device configurations.

Q5: What types of devices can be connected to the IC694MDL645A inputs?
The module supports industrial digital devices including push buttons, selector switches, limit switches, electronic proximity switches, and other 24 VDC discrete sensors.

Q6: Does the IC694MDL645A provide electrical isolation?
Yes. The module provides optical isolation between the field side, PLC backplane, and frame ground, rated at 250 VAC continuous and 1500 VAC for one minute.

Q7: What does the “A” revision indicate?
The “A” suffix indicates the hardware revision level of the IC694MDL645 module. Revision changes generally represent manufacturing improvements while maintaining compatibility with PACSystems RX3i PLC systems.

Q8: What should be checked before replacing an IC694MDL645A module?
Before replacement, verify the RX3i rack compatibility, 24 VDC field power supply, input wiring configuration, terminal connections, PLC hardware configuration, and module addressing to ensure correct operation after installation.

GE IC694MDL645A

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