Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE Fanuc |
| Model | |
| Product Family | Genius I/O |
| Product Type | Terminal Assembly |
| Associated I/O Block | IC660BBD025 |
| Associated Electronics Assembly | IC660EBD025 |
| I/O Capacity | 32 DC circuits |
| Field Voltage | 5/12/24 VDC configurations |
| Input Filter | Selectable, approximately 1–100 ms |
| Output Current | Up to 0.5 A per circuit, application-dependent |
| Maximum Inrush | Up to 4 A for approximately 10 ms |
| Heat Dissipation | Approximately 18 W under specified maximum loading |
| Connection | Screw-type field terminals |
| Monitoring | Front monitoring/service connection |
| Operating Temperature | Approximately 0 to 60°C |
| Storage Temperature | Approximately -40 to 100°C |
| Dimensions | Approximately 224 × 90 × 112 mm |
| Weight | Approximately 1.8 kg |
The 32-circuit capacity, 0.5 A per-circuit output figure, selectable filtering, and physical dimensions are supported by available technical records; some secondary listings vary on individual electrical figures, so the installed block’s exact voltage and wiring configuration should take priority.
Product Introduction
The is a Genius I/O terminal assembly designed for field wiring within the legacy Genius distributed I/O architecture. It is used with the IC660BBD025 I/O block and IC660EBD025 electronics assembly, providing the physical terminal interface, module mounting arrangement, and electrical connection required by the Genius I/O assembly.
The important distinction for maintenance work is that the is not simply a replacement for an I/O electronics module. It forms part of a matched Genius I/O assembly. The associated BBD025 block provides the 32-circuit DC source/sink I/O function, while the terminal assembly handles the field connection and mechanical/electrical interface. The correct electronics assembly must match the terminal/block voltage, circuit count, and wiring arrangement.
IC660TBD025
Application Scenarios & Field Pitfalls — Engineer’s Perspective
The is primarily encountered in legacy GE Fanuc Genius I/O installations where field devices must remain connected to an existing 32-circuit DC I/O block. Typical applications include machine control panels, material-handling equipment, factory automation, packaging systems, and distributed PLC I/O installations built around the Genius network. Genius I/O blocks were used with several GE PLC families through appropriate Genius bus controllers, including Series 90-30 and Series 90-70 systems.
Field pitfalls to check:
- Do not order it as a standalone I/O block. The is the terminal assembly; the associated electronics and I/O block are separate components.
- Match the complete assembly. Confirm the installed IC660BBD025 and IC660EBD025, including voltage rating and circuit configuration, before replacement.
- Verify wiring before removal. Genius terminal assemblies carry the field wiring, so incorrect terminal identification can create immediate I/O faults after reassembly.
- Check the voltage configuration. Public documentation and secondary records identify 5/12/24 VDC variants/configurations; do not assume the installed system is a 24 VDC configuration merely because it is common in industrial panels.
- Preserve Genius configuration data. Input filtering, output behavior, and Genius network configuration should be documented before maintenance.
- Inspect terminal condition. On older installations, screw-terminal corrosion, loose conductors, damaged insulation, and degraded connections can create intermittent faults that may be incorrectly attributed to the electronics assembly.
Related Products
- IC660BBD025 — The associated 32-circuit DC Genius I/O block; provides the actual configurable discrete I/O function.
- IC660EBD025 — Electronics assembly used with the / arrangement.
- IC660BBD024 — 32-circuit 12/24 VDC source I/O variant with a different electrical configuration.
- IC660BBD020 — 16-circuit 24/48 VDC source I/O block; lower circuit count and different voltage class.
- IC660BBD021 — 16-circuit 24/48 VDC sink I/O block.
- IC660CBB902 — Genius bus controller used to interface Genius I/O with compatible PLC systems.
- IC660CBB903 — Related Genius bus controller for Genius I/O network integration.
- IC693BEM331 — Series 90-30 Genius communications module used to interface Series 90-30 systems with Genius I/O.
- IC697BEM731 — Series 90-70 Genius bus interface hardware.
