Mitsubishi Q2ASCPU User Manual page 91

Error
Code Error Contents and Cause
(SD0)
The power supply voltage (100 to
240VAC) of either of the two power
supply modules on the power supply
1510 duplexing extension base unit dropped
to or below 85% of the rated voltage.
(This can be detected from the control
system of the redundant system.)
The voltage(100 to 240VAC) of the
power supply module on the extension
base unit dropped to or below 85% of
1520 the rated voltage.
(This can be detected from the control
system of the stand-alone system or
redundant system.)
The 24 VDC power supplied to the
system management module AS92R
has dropped below 90% of the rated
1530 voltage.
(This can be detected from the control
system or standby system of the
redundant system.)
• The battery voltage in the CPU
module has dropped below stipulated
1600 level.
• The lead connector of the CPU
module battery is not connected.
Voltage of the battery on memory card 1
1601
has dropped below stipulated level.
Voltage of the battery on memory card 2
1602
has dropped below stipulated level.
Corrective Action
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 RAM or for the back-up
power function, install a lead
connector.
Change the battery.
Change the battery.
76
Corresponding
CPU
Q4AR
Q4AR
Q4AR
QnA
QnA
QnA