Troubleshooting Of Motion Cpu Module - Mitsubishi Electric Melsec-Q172DCPU User Manual

6 INSPECTION AND MAINTENANCE

6.6.2 Troubleshooting of Motion CPU module

Error-occurrence description
"POWER" LED turns off
" ." does not flash in the first digit of
7-segment LED
The 7-segment LED stopped with an
initializing item (b00 to o99)
"A00" displays on 7-segment LED
"E " displays on 7-segment LED
"AL" "L01" displays on 7-segment LED
"AL" "A1" "
LED
"BT " displays on 7-segment LED
" . . ." displays on 7-segment LED
Servo amplifier does not start
"AL" "S01" displays on 7-segment LED
This section describes the contents of troubles for the error codes and corrective
actions of the troubles.
As for troubleshooting of PLC CPU, refer to the QCPU User's Manual (Hardware
Design, Maintenance and Inspection) of their respective modules.
As for troubleshooting of I/O modules, refer to the "I/O Module Type Building Block
User's Manual" of their respective modules.
POINT
Check that the operating system software is installed before starting the Motion
CPU module.
(1) Troubleshooting flowchart
The following show the contents of the troubles classified into a variety of groups
according to the types of events.
" displays on 7-segment
(a)
"Flowchart for when "POWER" LED turns off"
(b)
"Flowchart for when " ." does not flash in the first digit of
7-segment LED"
(c)
"Flowchart for when the 7-segment LED stops with an initializing item
(b00 to o99)"
(d)
"Flowchart for when "A00" displays on 7-segment LED"
(e)
"Flowchart for when "E " displays on 7-segment LED"
(f)
"Flowchart for when "AL"
(g)
"Flowchart for when "AL"
(h)
"Flowchart for when "BT " displays on 7-segment LED"
(i)
"Flowchart for when " . . ." displays on 7-segment LED"
(j)
"Flowchart for when servo amplifier does not start"
(k)
"Flowchart for when "AL"
6 - 16
"L01" displays on 7-segment LED"
"A1" " " displays on 7-segment LED"
"S01" displays on 7-segment LED"