GE IC200ALG321B Analog Voltage Output Module

FAQ

Q1: What is the GE Fanuc IC200ALG321B used for?
The IC200ALG321B is a 4-channel analog voltage output module for the VersaMax I/O platform. It converts digital output values from the PLC into 0–10 VDC analog signals for controlling variable frequency drives (VFDs), proportional valves, dampers, actuators, and other analog-controlled equipment.

Q2: How many output channels does the IC200ALG321B provide?
The module provides four single-ended analog voltage output channels, allowing four independent analog devices to be controlled simultaneously.

Q3: What output signal does the IC200ALG321B support?
Each channel outputs 0 to 10 VDC nominal, with an actual maximum output capability of 10.24 VDC. The module provides 12-bit resolution, equivalent to 2.5 mV per step, for precise analog control.

Q4: Does the IC200ALG321B require an external power supply?
Yes. An external 18–30 VDC power supply is recommended for the output circuitry. The module electronics receive operating power from the VersaMax backplane.

Q5: What diagnostic features are included?
The module provides Loss of User Side Power diagnostics and includes OK and FLD PWR LEDs to indicate backplane power and field-side power status, making troubleshooting easier.

Q6: What happens if PLC communication is interrupted?
Using the carrier jumper, users can select one of two output behaviors: Hold Last State (default) or force all outputs to 0 VDC when communication or backplane power is lost.

Q7: What does the “B” revision indicate?
The “B” suffix identifies the hardware revision of the IC200ALG321 module. Revision B is fully compatible with VersaMax systems and primarily reflects manufacturing and lifecycle improvements rather than functional changes.

Q8: What should be checked before replacing an IC200ALG321B module?
Before replacement, verify the VersaMax carrier compatibility, external power supply voltage, output wiring, jumper setting (Hold Last State or 0 V default), PLC hardware configuration, and analog scaling parameters to ensure proper operation after installation.

GE IC200ALG321B

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