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5.4 Pre-alarm function
A monitor lamp is blinked among contact delay time until excitation of a relay after operation value
detection. Blinking of a monitor lamp will be gradually fast, and when the point of contact delay time
passes, a monitor lamp is lights up.
If contact delay time setting is made into 0 second, a pre-alarm function constitutes OFF.
・Relay action and pre-alarm in over-input detection.
(Output mode setting：Excitation H， Pre-alarm setting：ON)
Operation value
setting
Input
Relay
ON
action
OFF
Monitor
ON
lamp
OFF
・Action of the pre-alarm in contact delay time (blinking)
180s
3s
3s
Blinking cycle
Blinking
Lights up
Contact delay
setting time
120s
3s
2s
3s
6s
Blinking
Lights up
Contact delay
setting time
60s
2s
2s
2s
Blinking cycle
4s
16
Dead band
Setting value
Contact delay
setting time
10s
1
1s
Blinking cycle
Blinking becomes
2s
gradually fast.
FSDLC-220-047
0s
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