Allen-Bradley MicroLogix 1200 User Manual

i Publication 1762-UM001D-EN-P - March 2004
Table of Contents
Preface Who Should Use this Manual. . . . . . . . . . . . . . . . . . . . . . . P-1
Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . P-2
Common Techniques Used in this Manual . . . . . . . . . . . . . P-2
Chapter 1
Hardware Overview
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
MicroLogix 1200 Memory Module and/or Real-Time Clock .
1-2
1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Firmware Revision History . . . . . . . . . . . . . . . . . . . . . . 1-4
Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Chapter 2
Installing Your Controller
Agency Certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Compliance to European Union Directives . . . . . . . . . . . . . 2-1
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Considerations. . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Hazardous Location Considerations . . . . . . . . . . . . . . . 2-3
Disconnecting Main Power. . . . . . . . . . . . . . . . . . . . . . 2-4
Safety Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Power Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Periodic Tests of Master Control Relay Circuit . . . . . . . . 2-5
Power Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Isolation Transformers . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Power Supply Inrush . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Loss of Power Source. . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Input States on Power Down . . . . . . . . . . . . . . . . . . . . 2-7
Other Types of Line Conditions . . . . . . . . . . . . . . . . . . 2-7
Preventing Excessive Heat . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Using Emergency-Stop Switches . . . . . . . . . . . . . . . . . . 2-9
Schematic (Using IEC Symbols) . . . . . . . . . . . . . . . . . . 2-10
Schematic (Using ANSI/CSA Symbols). . . . . . . . . . . . . . 2-11
Installing a Memory Module and/or Real-Time Clock . . . . . 2-12
Controller Mounting Dimensions . . . . . . . . . . . . . . . . . . . . 2-13
Controller and
Expansion I/O Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Mounting the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
DIN Rail Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
1762 Expansion I/O Dimensions . . . . . . . . . . . . . . . . . . . . 2-17

Allen-Bradley MicroLogix 1200 Specifications

General

Series	MicroLogix 1200
Type	Programmable Logic Controller (PLC)
Mounting	DIN rail or panel mount
Programming Language	Ladder Logic
Programming Software	RSLogix 500
I/O Points	Up to 40
Communication Ports	RS-232, RS-485
Memory	6 KB user memory
Power Supply	24V DC or 120/240V AC
Expansion	Supports expansion I/O modules
Operating Temperature	0°C to 55°C (32°F to 131°F)
Dimensions	90 mm x 110 mm
Weight	0.5 kg (1.1 lbs)