GE Fanuc IC660TBA104 Genius I/O Terminal Assembly

Configured for analog current signal conversion and multi-circuit field termination in Genius I/O sub-rack networks, the GE Fanuc IC660TBA104 (IC660TBA104 Terminal Assembly) provides direct physical/electrical execution. It interfaces 4 input circuits and 2 output circuits, routing digitized analog values to GE Series 90, Series 6, and Series 5 CPU platforms.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Compatibility

The GE Fanuc IC660TBA104 terminal assembly maintains deterministic backplane bus communication velocity across standard Genius serial bus networks. It processes incoming input data up to 8 bytes and formats outgoing command data up to 4 bytes for discrete and temperature monitoring routines. Channel-to-channel group isolation (300 V) and complete circuit-to-block isolation protect signal integrity without introducing conversion latency. Parameter configuration via handheld monitors—including output default states, hold-last-state modes, conversion timing, and alarm thresholds—remains active across backplane firmware revisions.

Frequently Asked Questions

Q: What level of electrical isolation is provided across individual circuit groups on the IC660TBA104?

A: The IC660TBA104 provides 300 V group-to-group isolation and 1500 VAC block-to-block isolation for 1 minute to prevent ground potential differences from corrupting converted analog values.

Q: How does the IC660TBA104 handle power supply dropouts during operation?

A: The module maintains output circuit stability and processing continuity during power supply dropouts of up to 1 cycle under AC operation and up to 10 ms under DC operation.

Field Installation Guidelines

1. Secure the IC660TBA104 terminal assembly to the mounting sub-plate using panel screws to guarantee physical ground bonding across the chassis.
2. Route 4-20 mA analog input and output cables in separate grounded conduits, keeping signal lines physically segregated from AC power wiring.
3. Strip conductor ends to 8 mm–10 mm and torque terminal screws to 0.8 Nm to 1.2 Nm to ensure low-resistance termination points.
4. Connect all cable shields to designated system grounding lugs at a single point to mitigate electromagnetic noise in high-density I/O enclosures.