Rockwell Automation 1772-LV,D17726.6.1 A and I MNL MINI-PLC-2/15 PROCESSO - Manual (Page 81)

Maintenance and Troubleshooting
Chapter 5
5Ć11
Figure 5.2
Power Supply/Power Cable Outputs
10143-I
7
4 5 6
9
2 1 3
8
Pin No.
12
3
4.5
6
7
8
9
Function
Logic Voltage, +5.1V DC + – 3%
Chassis Ground
Common
Battery Fail (Low-True)
Battery (+) (2.7-3.7V DC)
Memory Voltage +5V DC 5%
Processor Enable (Low-True)
+
–
Battery Voltage at Pin No. 7 is not measurable at base
of Power Supply.
1
1
I/O Power
Cable End System Power
Supply Socket
7
4 5 6
9
2 1 3
8
2. Remove system power at the main disconnect
3. Remove wiring from the Power Supply’s terminal strip.
4. Remove I/O Power Cable from the base of Power Supply.
5. Remove the Power Supply from its mounting and install a replacement
Power Supply. Be sure that the correct Power Supply fuse is installed in
the fuseholder and that the terminal strip is jumpered according to the line
voltage.
6. Connect the terminal strip wiring and the I/O Power Cable to the Power
Supply.
7. Restore system power.
There are three indicators on the Processor that are used during troubleshooting
to help determine the source of a fault. They reflect the status of the processor’s
self–checking routines and errors in programming. These indicators are:
PROCESSOR
MEMORY
RUN
Two types of faults that can occur with the Mini–PLC–2/15 Processor are
processor faults and run–time errors. A processor fault can be any hardware
fault or other fault that is internal to the Processor. A run–time error is simply a
programming error that is detected by the Processor while the program is
operating.
If a processor fault or a run–time error is detected, either or both the
PROCESSOR and MEMORY indicators will illuminate depending on the
Mini-PLC-2/15 Processor