Mitsubishi Electric Q26UD(E)HCPU - Page 303

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CHAPTER 15 TROUBLESHOOTING
15
15.3 Checking for Functional Errors 15.3.12 Power supply module
(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
*1 Excluding the Q00JCPU and Q00UJCPU (without ERR. terminal).
• Redundant power supply system
*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. Note 15.1Note 15.2
• 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
Base unit
CPU module
*1
Basic model QCPU,
High Performance model QCPU,
Universal model QCPU
Process CPU
Redundant
CPU
Main base unit (Q3B)
AC power not input, power supply module fuse blown and CPU module stop error (including
reset) can be detected.
Multiple CPU high speed
main base unit (Q3DB)
Extension base unit (Q6B) Errors cannot be detected (always off).
(Cannot be
added)
Slim type main base unit
(Q3SB)
AC power not input, power supply module fuse blown
and CPU module stop error (including reset) can be
detected.
(cannot be combined)
Base unit
CPU module
*1
Basic model QCPU, High Performance model QCPU,
Process CPU, Universal model QCPU
Redundant CPU
Redundant power main
base unit (Q3RB)
AC power not input, power supply module fuse blown, CPU module stop error (including
reset), and redundant power supply module failure can be detected.
Redundant power extension
base unit (Q6RB)
AC power not input, power supply module fuse blown,
CPU module stop error (including reset), and redundant
power supply module failure can be detected.
Errors cannot be detected
(always off).
*2
Redundant type extension
base unit (Q6WRB)
(cannot be combined)
Errors cannot be detected
(always off).
Note 15.1
Failure of redundant power supply module cannot be detected by the Basic model QCPU.
Note 15.2
When using the High Performance QCPU or Process CPU, check the versions of the CPU module and programming tool
used.
High Performance model QCPU (
Page 639, Appendix 6.2)
Process CPU (
Page 644, Appendix 6.4)
Note 15.1, Note 15.2
Basic
High
performance
Process