Life Detection Power Supply Module - Mitsubishi Electric Q26UD(E)HCPU User Manual

7.2.5

Life detection power supply module

The Life detection power supply module estimates its remaining life internally and indicates the life. The remaining life
of the module can be checked by the LIFE LED located on the front of the module and on/off of the LIFE OUT
terminals.
(1) LED indication and module status during operation
The following table lists the LED indication and module status during operation.
POWER
Off
On (green)
On (green)
On (green)
On (green)
On (green)
On (green)
On (green)
On (green)
Flash (orange)
*1 The remaining life of the module varies depending on the ambient temperature.
(If the ambient temperature rose by 10°C, the remaining life of the module will be shortened by half.)
(2) Monitoring module life by using the LIFE OUT terminal
The module life can be monitored in either of the following way by using outputs of the LIFE OUT terminal
• Connecting the terminal to an external display device
• Obtaining the output status into an input module and monitoring it by GOT
LED
LIFE OUT terminal
LIFE
Off Off
On (green)
On
On (orange)
Flash (orange)
(On for 5 sec. and off for
1 sec.)
Off
Flash (orange)
(At intervals of half a
sec.)
Off
On (red)
Flash (red) (At intervals of Turns off and on three
1 sec.) times at intervals of 1
second and then off
Off
Off Off
CHAPTER 7 POWER SUPPLY MODULE
Module
• Power supply module failure
• AC power is not input
• Power failure (including momentary power
failure for 20ms or more)
• Normal operation
• Normal operation (Remaining life approx.
*1
50%)
• Normal operation (Remaining life approx. 1
*1
year)
Replacement of the module is recommended
• Normal operation (Remaining life approx. 6
*1
months)
• Life expired
• Ambient temperature is out of range
(Ambient temperature is exceeding the
specification)
• Function failure (Normal processing is not
available due to a failure of the life
diagnostics circuit in the module)
• Ambient temperature is out of range
(Ambient temperature is exceeding the
specification and also the life detection
function has stopped.)
• Watchdog timer error in the module
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