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ALLEN BRADLEY 1747-L551 PLC Processor

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iv<br />

Table of Contents<br />

DH-485 Interface Converter . . . . . . . . . . . . . . . . . . . . . . . . 2–16<br />

Monitoring with a Data Table Access Module . . . . . . . . . . . . . . 2–16<br />

Monitoring with a DTAM Plus . . . . . . . . . . . . . . . . . . . . . . . . . 2–16<br />

Monitoring with a DTAM Micro . . . . . . . . . . . . . . . . . . . . . . . . 2–17<br />

Monitoring with a PanelView Operator Terminal . . . . . . . . . . . . 2–17<br />

Selecting a Memory Module for the<br />

SLC 5/01 and SLC 5/02 <strong>Processor</strong>s . . . . . . . . . . . . . . . . . . . . 2–18<br />

EEPROM and UVPROM Memory Modules . . . . . . . . . . . . . . . 2–18<br />

Selecting a Memory Module for<br />

SLC 5/03, SLC 5/04, and SLC 5/05 <strong>Processor</strong>s . . . . . . . . . . . . 2–20<br />

EEPROM Burning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–21<br />

Selecting Isolation Transformers . . . . . . . . . . . . . . . . . . . . . . . . . 2–22<br />

Special Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–23<br />

Class I, Division 2 Applications . . . . . . . . . . . . . . . . . . . . . . . . 2–23<br />

Excessive Line Voltage Variations . . . . . . . . . . . . . . . . . . . . . . 2–23<br />

Excessive Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–23<br />

Selecting Surge Suppressors . . . . . . . . . . . . . . . . . . . . . . . . . 2–24<br />

Selecting Contact Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 2–26<br />

Transistor Output Transient Pulses . . . . . . . . . . . . . . . . . . . . . 2–27<br />

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–28<br />

System Installation<br />

Recommendations<br />

Chapter 3<br />

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1<br />

Spacing Your Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2<br />

Preventing Excessive Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3<br />

Grounding Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3<br />

Special Grounding Considerations for<br />

DC Applications using 1746-P3 . . . . . . . . . . . . . . . . . . . . . 3–5<br />

Modification to the SLC 500 Chassis . . . . . . . . . . . . . . . . . . . . 3–6<br />

Determining the Date of the SLC 500 Chassis . . . . . . . . . . . . . 3–6<br />

Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7<br />

Emergency-Stop Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8<br />

Power Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8<br />

Common Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8<br />

Isolation Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8<br />

Grounded ac Power-Distribution System with<br />

Master-Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . 3–9<br />

Loss of Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–10<br />

Input States on Power Down . . . . . . . . . . . . . . . . . . . . . . . . . . 3–10<br />

Other Types of Line Conditions . . . . . . . . . . . . . . . . . . . . . . . . 3–10<br />

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11<br />

Disconnecting Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11<br />

Safety Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11<br />

Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11<br />

Periodic Tests of Master Control Relay Circuit . . . . . . . . . . . . . 3–12<br />

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12<br />

Publication <strong>1747</strong>-6.2

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