ALLEN BRADLEY 1747-L551 PLC Processor
ALLEN BRADLEY 1747-L551 PLC Processor
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