Mitsubishi Q2ACPU User Manual page 366

22. TROUBLE SHOOTING
Error
Error Contents and Cause
Code
[DUAL DC DOWN 5V]
The power supply voltage (100 to 240VAC) of
either of the two power supply modules on the
power supply duplexing extension base unit
dropped to or below 85% of the rated voltage.
(This can be detected from the control system of
1510
the redundant system.)
■Collateral informationmmon
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• Always
[DC DOWN 5V]
The voltage(100 to 240VAC) of the power supply
module on the extension base unit dropped to or
below 85% of the rated voltage.
(This can be detected from the control system of
1520
the stand-alone system or redundant system.)
■Collateral informationmmon
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• Always
[DC DOWN 24V]
The 24 VDC power supplied to the system
management module AS92R has dropped below
90% of the rated voltage.
(This can be detected from the control system or
1530
standby system of the redundant system.)
■Collateral informationmmon
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• Always
*2
[BATTERY ERROR
• The battery voltage in the CPU module has
dropped below stipulated level.
• The lead connector of the CPU module battery is
not connected.
1600
■Collateral informationmmon
• Common Information:Drive Name
• Individual Information:–
■Diagnostic Timing
• Always
*2
[BATTERY ERROR
Voltage of the battery on memory card 1 has
dropped below stipulated level.
■Collateral informationmmon
1601
• Common Information:Drive Name
• Individual Information:–
■Diagnostic Timing
• Always
*2
[BATTERY ERROR
Voltage of the battery on memory card 2 has
dropped below stipulated level.
■Collateral informationmmon
1602
• Common Information:Drive Name
• Individual Information:–
■Diagnostic Timing
• Always
*2 The BAT.ALM LED turns on at BATTERY ERROR.
Check the supply voltage of the power supply
module. If the voltage is abnormal then replace the
power supply module.
Check the supply voltage of the power supply
module. If the voltage is abnormal then replace the
power supply module.
Check the 24VDC power supplied to the system
management module AS92R.
]
• Change the battery.
• If the battery is for program memory, standard
]
Change the battery.
]
Change the battery.
Corrective Action
RAM or for the back-up power function, install a
lead connector.
22 - 21
LED Status Corresponding
CPU Status CPU
RUN:
On
ERR.:
On
CPU Status:
Continue
RUN:
Off
ERR.:
Q4AR
Flicker
CPU Status:
Stop
RUN:
On
ERR.:
On
CPU Status:
Continue
RUN:
On
ERR.:
Off
CPU Status:
Continue
QnA
RUN:
On
ERR.:
On
CPU Status:
Continue