Mitsubishi Electric QJ71LP21 Reference Manual page 252

8 TROUBLESHOOTING
Error Code
Error Messages
*1
(SD0)
1415
CONTROL-BUS.
ERR.
1416
1417
SYS. UNIT DOWN
1421
*3
1500 AC/DC DOWN
DUAL DC DOWN
*4
5V
1510
SINGLE PS. DOWN
*5
DC DOWN 5V
1520
SINGLE PS.
ERROR
*3
1530
DC DOWN 24V
1600
BATTERY
*16
1601
ERROR
1602
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being stored.
*3 : This can only be detected in redundant systems. Detection is possible in either the control system or the standby system.
*4 : This can only be detected in the redundant system control system.
*5 : This can be detected in either a standalone system or a redundant system. However, in a redundant system it can only be detected in the control system.
*16 : When BATTERY ERROR occurs, the BAT. ALM LED turns on.
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Table8.2 Error code
Common Information Individual Information
(SD5 to 15) (SD16 to 26)
Base No.
Unit No.
----
----
----
----
Base No./
Power supply No.
----
Base No./
Power supply No.
----
Drive Name
LED Status
RUN ERROR
---- Off Flicker
---- Off Flicker
---- Off Flicker
---- Off Flicker
---- On Off
---- On On
---- On On
---- Off Flicker
---- On On
---- On On
Off
---- On
On
MELSEC-Q
Operating
Statuses of Diagnostic Timing
CPU
When an END
Stop
instruction executed.
At power ON/At
Stop
reset
Stop Always
Stop Always
Continue Always
Continue Always
Continue Always
Stop Always
Continue Always
Continue Always
Continue Always
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