Mitsubishi Electric Q26UD(E)HCPU User Manual page 303

(a) Errors that can be detected by the ERR. terminal
The following shows the errors that can be detected by the ERR. terminal of the power supply module in a
single power supply system/redundant power supply system.
• Single power supply system
Base unit
Main base unit (Q3B)
Multiple CPU high speed
main base unit (Q3DB)
Extension base unit (Q6B) Errors cannot be detected (always off).
Slim type main base unit
(Q3SB)
*1 Excluding the Q00JCPU and Q00UJCPU (without ERR. terminal).
• Redundant power supply system
Base unit
Redundant power main
base unit (Q3RB)
Redundant power extension
base unit (Q6RB)
Redundant type extension
base unit (Q6WRB)
*1 Excluding the Q00JCPU and Q00UJCPU (without ERR. terminal).
*2 Available only for the 2nd extension stage or later in a redundant system where the Redundant CPU whose serial
number (first five digits) is "09012" or later is used.
Remark
In the redundant power supply system, the failure of the redundant power supply module can also be detected by using the
programming tool.
• Detection by PLC diagnostics
• Detection by System monitor
For details on the PLC diagnostics and System monitor, refer to the following.
Operating manual for the programming tool used
Basic
Note 15.1
Failure of redundant power supply module cannot be detected by the Basic model QCPU.
High
Process
Note 15.2
performance
When using the High Performance QCPU or Process CPU, check the versions of the CPU module and programming tool
used.
High Performance model QCPU (
Process CPU (
Basic model QCPU,
High Performance model QCPU,
Universal model QCPU
AC power not input, power supply module fuse blown and CPU module stop error (including
reset) can be detected.
AC power not input, power supply module fuse blown
and CPU module stop error (including reset) can be
detected.
Basic model QCPU, High Performance model QCPU,
Process CPU, Universal model QCPU
AC power not input, power supply module fuse blown, CPU module stop error (including
reset), and redundant power supply module failure can be detected.
AC power not input, power supply module fuse blown,
CPU module stop error (including reset), and redundant
power supply module failure can be detected.
(cannot be combined)
Note 15.1, Note 15.2
Note 15.1Note 15.2
Page 639, Appendix 6.2)
Page 644, Appendix 6.4)
CHAPTER 15 TROUBLESHOOTING
*1
CPU module
Process CPU
(cannot be combined)
*1
CPU module
Redundant CPU
Errors cannot be detected
(always off).
Errors cannot be detected
Redundant
CPU
(Cannot be
added)
15
*2
(always off).
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