1756-IF8 OF8ControlLogix 电压/电流输入输出模块

1756-IF8 OF8ControlLogix 电压/电流输入输出模块

Identify the Module Components

You received the following components with your order:

· 1756-IF8 module

· Removable Terminal Block (RTB) door label

If you did not receive these components, contact your Rockwell

Automation sales office.

This module mounts in a ControlLogixä chassis and uses a

separately-ordered RTB or a Bulletin 1492 Interface Module (IFM) to

connect all field-side wiring.

This module uses one of the following RTBs:

· 1756-TBCH 36 position Cage clamp RTB

· 1756-TBS6H 36 position Spring clamp RTB

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1756-OF8 module

Removable Terminal Block (RTB) door label

If you did not receive these components, contact your local

distributor Rockwell Automation sales office.

This module mounts in a 1756 chassis and uses a separately-ordered

RTB or a Bulletin 1492 Interface Module (IFM)(1) to connect all

field-side wiring. This module uses one of the following RTBs:

1756-TBNH 20 position NEMA RTB

1756-TBSH 20 position Spring Clamp RTB

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Note the Power Requirements

This module receives power from the 1756 chasis power supply and

requires 2 sources of power from the backplane:

· 150mA at 5.1V dc

· 40mA at 24V dc

Add this current/power value (1.73W) to the requirements of all other

modules in the chassis to prevent overloading the power supply.

Key the Removable Terminal Block/Interface Module

Wedge-shaped keying tabs and U-shaped keying bands came with

your RTB to prevent connecting the wrong wires to your module.

Key positions on the module that correspond to unkeyed positions

on the RTB. For example, if you key the first position on the module,

leave the first position on the RTB unkeyed

Wire the Module

You can only connect wiring to your module through an RTB or IFM.

The example below shows how to wire the module.

Note the Power Requirements

This module receives power from the 1756 chasis power supply and

requires 2 sources of power from the backplane:

150mA at 5.1V dc

210mA at 24V dc

Add this current/power value (5.8W) to the requirements of all other

modules in the chassis to prevent overloading the power supply.

Install the Module

You can install or remove the module while chassis power is applied

1. Align the circuit board with the top and bottom chassis guides.

  2. Slide the module into the chassis until the module locking tabs click.