Description
Product Overview
Part Number: 8707-CA-08 Manufacturer: Originally GE Intelligent Platforms (Later MTL/Emerson acquired PAC8000 product line) Product Series: PAC8000 Remote I/O System Type: 8-module I/O Carrier / Backplane Base 8707-CA-08 is an 8-slot I/O carrier backplane base for GE PAC8000 modular remote I/O system. It acts as the mechanical and electrical backbone of PAC8000, carrying internal Railbus communication lines, address bus and power distribution traces. It can accommodate up to 8 PAC8000 I/O modules, paired with snap-on field terminal units. Compatible with BIM bus interface module and power supply module, suitable for general industrial and intrinsically safe hazardous area applications. PAC8000 seamlessly integrates with GE PACSystems RX3i / RSTi-EP controllers via Profinet or Modbus TCP. Widely deployed in petrochemical, oil & gas, chemical plants for remote field signal acquisition and control. Supports DIN rail or flat panel mounting.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 8707-CA-08 |
| Product Type | 8-slot I/O Carrier Base |
| Applicable System | GE PAC8000 Remote I/O |
| Module Slots | Max 8 I/O modules |
| Internal Bus | Railbus, 32-slot address bus |
| Mounting | 35mm DIN rail or flat panel mounting |
| Dimensions | 342(W) × 170(D) × 22(H) mm |
| Weight | Approx 680g |
| Field Power | Rear 8-pin connectors for bussed field power |
| Construction | Rugged polycarbonate housing + PCB backplane |
| Operating Temperature | -20°C ~ +70°C |
| Certification | ATEX, IECEx, FM approved for hazardous zone installation |
Engineer Notes
- 8707-CA-08 is GE PAC8000 standard 8-slot carrier, without integrated earth bar. If shield earth bar required, choose model 8709-CA-08.
- This carrier provides Railbus communication and power distribution between BIM bus interface, power supply and individual I/O modules.
- Field terminals snap directly onto each I/O module on carrier; mechanical keying design prevents wrong module insertion and protects field safety.
- Supports intrinsic safety I/O modules, can be installed in Zone 0/1 hazardous field locations.
- Multiple carriers can be cascaded by PAC8000 dedicated extension cable to expand remote I/O capacity.
- Proper protective earth connection must be made for cable screen shielding, to reduce EMC noise interference.
- PAC8000 remote I/O communicates with GE PACSystems PLC via BIM bus interface modules supporting Profinet / Modbus TCP.
Pre-Shipment Test Protocol
- Visual inspection of PCB, housing, connectors and mechanical keying structure
- Railbus continuity and backplane wiring connectivity test
- Insulation resistance test for power and signal traces
- Mechanical insertion test, verify smooth locking of I/O modules
- DIN rail clip and mounting structure durability check
- Anti-static & shockproof packaging inspection
Buyer FAQ
Q: Is GE 8707-CA-08 new original? A: We supply brand new original units, 12-month warranty, factory test certificate available on request.
Q: What does suffix CA-08 mean? A: CA = Carrier base; 08 = maximum 8 I/O module slots.
Q: What is the difference between 8707-CA-08 and 8709-CA-08? A: 8707-CA-08: standard 8-slot carrier without integrated earth bar. 8709-CA-08: same 8 slots, built-in earth bar for instrument shield cable grounding.
Q: Can GE PAC8000 8707-CA-08 work with GE RX3i PLC? A: Yes, with matching BIM bus interface module, PAC8000 remote I/O can communicate with GE PACSystems RX3i controller.
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