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CHAPTER 7 POWER SUPPLY MODULE
7
7.2 Specifications
7.2.5 Life detection power supply module
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.
*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 Module
POWER LIFE
Off Off Off
• Power supply module failure
• AC power is not input
• Power failure (including momentary power
failure for 20ms or more)
On (green) On (green)
On
• Normal operation
On (green) On (orange)
• Normal operation (Remaining life approx.
50%)
*1
On (green)
Flash (orange)
(On for 5 sec. and off for
1 sec.)
Off
• Normal operation (Remaining life approx. 1
year)
*1
Replacement of the module is recommended
On (green)
Flash (orange)
(At intervals of half a
sec.)
• Normal operation (Remaining life approx. 6
months)
*1
On (green) Off • Life expired
On (green) On (red)
Turns off and on three
times at intervals of 1
second and then off
• Ambient temperature is out of range
(Ambient temperature is exceeding the
specification)
On (green)
Flash (red) (At intervals of
1 sec.)
• Function failure (Normal processing is not
available due to a failure of the life
diagnostics circuit in the module)
On (green) Off
• Ambient temperature is out of range
(Ambient temperature is exceeding the
specification and also the life detection
function has stopped.)
Flash (orange) Off Off • Watchdog timer error in the module
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