GE Digital 8707-CA-08, 8710-CA-04 Specifications

Safety and Distributed Control

PAC8000 2/2 I/O Module Carriers

These module carriers are designed for 2/2 modules and are for either 32- or 64-module
addressing. If 64-slot addressing is required for a node, these carrier types must be used exclusively
as they cannot be mixed with 32-slot address carriers. A range of extender carriers and cables
allow for flexibility in cabinet design. Carriers can be mounted on T- or G-section DIN-rail or directly
to a flat surface, and may be joined end-to-end to extend the size of an installation.

Bussed Field Power (BFP) is connected to the I/O Module Carrier for modules that require this. Each
BFP connection supplies two adjacent module slots, so these modules must use the same BFP
supply. Terminals are provided on the Carrier to terminate cable screens and shields.

Field terminals are “clicked” in to place on the Carrier, then are trapped in place by inserting the I/O
Module and secured by the module’s screw.

I/O Module Carriers have no active components, so have very high reliability.

8707-CA-08 8710-CA-04

Product Name 8 Module Carrier 4 Module Carrier

Lifecycle Status Active Active

Module Addressing 1-32 1-32

Railbus Connectors

Weight (g) 680 350

Mounting

Dimensions (W x D x H) in mm 342 x 170 x 22 178 x 170 x 22

Common PAC8000 Specifications See Section 14 for System Specifications See Section 14 for System Specifications

Female In

Male Out

DIN-rail (T): 7.5 x 35 mm

DIN-rail (T): 15 x 35 mm

DIN-rail (G)

Flat Panel

Female In

Male Out

DIN-rail (T): 7.5 x 35 mm

DIN-rail (T): 15 x 35 mm

DIN-rail (G)

Flat Panel

PAC8000 SafetyNet

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Safety and Distributed Control

Module Carrier

The 8-module carrier with extended addressing features:

• 64-slot address bus

• Accepts up to eight SafetyNet and/or standard I/O modules

• DIN-rail or panel mounting

• Carries control signals and data on Railbus

• Distributes System Power to modules

• Distributes Bussed Field Power to modules

• Isolated earthing bar for cable screens/shields

8709-CA-08

Product Name 8-module Carrier - extended addressing

Lifecycle Status Active

Electrical Connections

Railbus Connectors female in, male out

Cable Screens/shield Connections M4 screw terminals (x34)

8-pin male (x2) - The two 8-pin connectors provided at the top rear of

Bussed Field Power Supply Connectors

Dimensions (W x D x H) mm 342 x 170 x 22

Weight (g) 680

Mounting Methods Flat panel or DIN rail

DIN-rail types

the carrier connect power supplies for ‘field power’. These supplies are

routed through I/O modules that require power for their field circuits.

‘Top hat’ 35 x 7.5mm rail or 35 x 15mm rail to EN 50022

G-section rail to EN 50035

Bussed Field Power Connector

Terminal Function

1 I/O modules 1 & 2

2 –ve (or Neutral)

3 I/O modules 1 & 2

4 +ve (or Live)

5 I/O modules 3 & 4

6 +ve (or Live)

7 I/O modules 3 & 4

8 –ve (or Neutral)

Connector and Table

The table above gives the connection details for modules 1 to 4. The second connector provides identical connections for
modules 5 to 8.

Notes:
For applications with up to 4 IO Modules, it is possible to use the 4-module Carrier (8710-CA-04).

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