Control Logic Wiring And Chapter Objectives; Chapter Overview - Allen-Bradley B Series Service Manual

Chapter Objectives

Chapter Overview

Control Logic Wiring and Adapters
This chapter introduces you to terminal block locations and wiring,
and adapter locations and functions.
This chapter illustrates and describes Standard Adapter Board:
•
Control Logic Interface Options L4, L5, and L6, including
terminal block TB3
•
TB3 input mode selections and functions
•
TB3, TB5, TB6, TB7 terminal designations
This chapter illustrates and describes the following terminal
designations for the PLC Comm Adapter Board:
•
TB20
•
TB21
Important:
All printed circuit boards, except the Main Control
Board assembly, are referenced to negative ground
(–bus).
ATTENTION: Some printed circuit boards and drive
components may contain hazardous voltage levels.
!
Remove power before you disconnect or reconnect
wires, and before you remove or replace fuses and
circuit boards. Verify bus voltage by measuring the
voltage between +DC and –DC on Terminal Block
TB1. Do not attempt to service the drive until the bus
voltage has discharged to zero volts.
ATTENTION: This assembly contains parts and
sub-assemblies that are sensitive to electrostatic
!
discharge. Static control precautions are required when
servicing this assembly. Component damage may result
if you ignore electrostatic discharge control procedures.
If you are not familiar with static control procedures,
reference Allen-Bradley Publication 8000–4.5.2,
Guarding Against Electrostatic Discharge, or any other
applicable ESD protection handbook.
Chapter
Publication 1336 FORCE-6.14 – August, 1999
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