Product Core Brief
- Part Number: 8701-CA-BI
- Brand: GE (now Emerson)
- Series: GE PAC8000 I/O
- Core Function: PAC8000 Multi-BIM carrier that provides the mechanical and electrical backbone for Bus Interface Modules, power supplies, I/O modules and field terminals.
- Product Type: PAC8000 Multi-BIM Carrier
- Key Specs: Multi-BIM carrier | supports PAC8000 BIM, power supply and I/O modules | Railbus backplane | DIN-rail / panel-mount | keyed snap-on field terminals
- Condition: New Original / New Surplus
Product Introduction
GE 8701-CA-BI is a PAC8000 Multi-BIM carrier used within the GE PAC8000 distributed I/O system. It serves as the mounting and interconnection platform for Bus Interface Modules, power supplies, I/O modules and field terminals.
The carrier provides the internal Railbus that carries address, data and power lines between modules, and supports flat-panel or T-/G-type DIN-rail mounting. Field terminals snap onto the carrier and accept field wiring without additional connectors, allowing fast replacement while maintaining mechanical keying for safety. The 8701-CA-BI itself is a carrier assembly rather than a standalone controller, so its final function depends on the installed BIM, power supply and I/O modules.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE (now Emerson) |
| Part Number | 8701-CA-BI |
| Product Type | PAC8000 Multi-BIM Carrier |
| Series | GE PAC8000 I/O |
| Typical Application | Distributed I/O node backbone for PAC8000 systems |
| Supported Modules | BIM, power supply, I/O modules, field terminals |
| Internal Bus | Railbus backplane |
| Mounting | Flat panel or T-/G-type DIN rail |
| Status | Legacy / Obsolete |
Note: Exact slot count, supported BIM types, power distribution limits, environmental rating and hazardous-area approvals should be confirmed against the carrier label, installed modules and the PAC8000 system manual before commissioning.
Quality Control Process (DYNAMIC GENERATION)
- Visual and mechanical inspection. We check the carrier housing, Railbus connectors, DIN-rail/panel-mount hardware, and field-terminal mounting points for damage or corrosion.
- Backplane continuity check. Key Railbus pins and module slots are verified for correct continuity and no short circuits.
- Configuration verification. The installed BIM, power supply and I/O modules are matched against the original node configuration.
- Power-up and communication check. Where a compatible test setup is available, the assembled node is checked for proper power-up, BIM initialization and I/O communication.
- Final packaging. After passing inspection, the unit is anti-static bagged and foam-packed for shipment.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ This is a carrier, not a standalone module. The 8701-CA-BI must be equipped with the correct BIM, power supply and I/O modules to function.
❗ Verify BIM compatibility. PAC8000 nodes require the correct Bus Interface Module for the host network; the carrier alone does not determine protocol.
❗ Confirm slot count and module layout. Multi-BIM carriers may support different module arrangements; the replacement must match the original node configuration.
❗ Check field terminal keying. PAC8000 field terminals are mechanically keyed; using the wrong terminal type can cause wiring errors or unsafe conditions.
❗ Do not mix with PACSystems RX3i hardware. PAC8000 carriers, BIMs and I/O modules are not interchangeable with RX3i rack-based modules.
❗ Handle as ESD-sensitive equipment. Always use anti-static handling procedures during removal, installation, and storage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| GE 8701-CA-BI | GE 8701-CA-BI | Direct | Same carrier; verify installed BIM, power supply and I/O modules. |
| GE 8701-CA-BI | Other PAC8000 carriers | Needs Adaptation | Slot count, mounting and module layout may differ. |
| GE 8701-CA-BI | PAC8000 BIM + I/O assembly | Needs Adaptation | Carrier must match the original node configuration and field terminals. |
| GE 8701-CA-BI | PACSystems RX3i modules | Not Compatible | Different platform, backplane and mounting architecture. |
Benchmark highlights
- PAC8000 Multi-BIM carrier for distributed I/O nodes.
- Provides Railbus backplane for BIM, power supply and I/O modules.
- Supports keyed snap-on field terminals for fast replacement.
- Suitable for process control, distributed I/O and hazardous-area PAC8000 applications.
- Legacy product; best suited for existing system maintenance and like-for-like replacement.
