GE IC693ALG391F Series 90-30 Analog Combination Module

Configured for multi-channel analog signal conditioning in GE Fanuc Series 90-30 platforms, the GE IC693ALG391F (IC693ALG391 Analog I/O Module) provides direct physical/electrical execution. This high-density combination interface routes 8 analog inputs and 8 analog outputs directly between field-level process transmitters, control valves, and the system backplane without requiring separate I/O cards.

Hardware Specifications

Backplane Bus Communication & IO Density Scaling

The module transfers digitized field values via the backplane bus communication velocity framework, writing 12-bit analog input words to CPU register memory and reading command outputs on each scan cycle. Designed with high I/O density scaling, the card integrates 16 total analog channels into a single baseplate slot. Onboard signal conditioning networks provide high common-mode rejection and optical backplane isolation, while firmware flash compatibility ensures seamless configuration via standard programming software.

Frequently Asked Questions

Q: Does the IC693ALG391F support direct 4-20 mA current loop inputs?

A: Yes, the input channels accept standard 4-20 mA current loop signals as well as unipolar and bipolar voltage inputs ranging from ±2.5 V to ±10 V.

Q: Can output channels be configured to deliver 4-20 mA current outputs directly?

A: No, the output section delivers voltage signals (±10 V and 0 to 10 V). Driving 4-20 mA current actuators requires external voltage-to-current signal converters.

Q: How does the module handle backplane power distribution for its analog processing circuits?

A: The internal logic and A/D conversion circuitry draw power directly from the 5 VDC backplane bus, consuming approximately 200 mA under full operational load.

Field Installation Guidelines

• Ensure backplane power is switched off before inserting or extracting the module from the baseplate rack.
• Wire analog input and output signals using twisted, shielded pair cables to minimize field electromagnetic interference.
• Ground all cable shield drain wires at one end only, preferably at the cabinet earth grounding bar.
• Maintain separate conduit runs for analog signal lines away from high-voltage AC cables and motor drive outputs.
• Calibrate field wiring loops to ensure external loop resistance remains within specified terminal impedance limits.