GE Fanuc IC693ALG390G Analog Output Module

Configured for multi-channel analog signal synthesis in Series 90-30 PLC platforms, the GE Fanuc IC693ALG390G (IC693ALG390 Analog Output Module) provides direct physical/electrical execution. The module converts 12-bit digital words from the backplane into 2 isolated voltage or current loop signals (0 to +10 V, -10 to +10 V, 4 to 20 mA, or 0 to 20 mA) to control field actuators and control valves.

Hardware Specifications

Backplane Bus Communication Velocity & I/O Density Scaling

Interfacing directly with the Series 90-30 backplane, the IC693ALG390G maintains high backplane bus communication velocity by updating both output channels during each CPU sweep cycle. Internal optocouplers isolate backplane logic circuits from field-side user power supplies and current loops, preventing electrical noise propagation. High-density output conditioning circuits ensure rapid digital-to-analog converter response without introducing sweep lag into execution loops.

Frequently Asked Questions

Q: What power sources are required to operate the IC693ALG390G analog output loops?

A: Logic circuits draw 32 mA from the 5 VDC backplane bus, while output current loops require an external 24 VDC user supply providing up to 120 mA.

Q: How are current and voltage ranges selected on the IC693ALG390G module?

A: Output signal formats (0 to +10 V, -10 to +10 V, 4 to 20 mA, or 0 to 20 mA) are defined in CPU system configuration software and through field connector wiring pinouts.

Q: Can the IC693ALG390G module be inserted into the baseplate while power is applied?

A: No. System power to the Series 90-30 baseplate must be completely disconnected before module insertion or removal to prevent electrical damage and backplane errors.

Field Installation Guidelines

1. Disconnect and lock out all power sources feeding the Series 90-30 rack and field devices before installing the module.
2. Hook the top rear notch of the module casing onto the top rail of the designated baseplate slot.
3. Pivot the module downward until the rear bus connector fully locks into the backplane socket.
4. Connect field actuators using shielded twisted-pair cabling, grounding the shield braid at one end to prevent ground loops.
5. Tighten the removable terminal block securing screws and route signal wiring away from high-voltage AC conductors.