ALLEN BRADLEY 1747-L551 PLC Processor

Quick Start for Experienced Users
1–5
5. Install the processor. Reference
Make sure system power is off; then insert the processor into the 1746 chassis.
Important:
The SLC 500 Modular Processors must be inserted into the left slot (slot 0), as
shown below. Remove the protective label after installing the processor.
Chapter 2
(Selecting Your
Hardware
Components)
Chapter 6
(Installing Your
Hardware
Components)
Card
Guide
Protective
Label
Module Release
6. Apply power to to the processor. Reference
Follow the steps below:
1. Energize the chassis power supply.
2. Check the chassis power supply and processor LEDs. The power LED on the power supply
should be on and the fault LED on the processors should be flashing.
Chapter 8
(Starting Up Your
Control System)
Chapter 10
(Troubleshooting)
Power supply and SLC 5/01 and SLC 5/02 LEDs
Power supply and SLC 5/03 and SLC 5/04 LEDs
POWER
RUN
COMM
POWER
RUN
FORCE
CPU FAULT
FLT
DH485
FORCED I/O
BATT
RS232
BATTERY LOW
The RUN LED on the SLC 5/01 processor is
actually labeled “PC RUN.” Also, the SLC 5/01
processor does not have a COMM LED.
The DH485 LED on the SLC 5/03
processor is labeled “DH+” on the SLC
5/04 processor.
Power supply and SLC 5/05 LEDs
POWER RUN
FORCE
FLT
ENET
BATT
RS232
Refer to the following key to determine the status of
the LED indicators:
Indicates the LED is OFF.
Indicates the LED is ON.
Indicates the LED is FLASHING.
Status of LED does not matter.
Publication 1747-6.2