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FANUC LTD
DESCRIPTIONDESIGNDATE
EDIT
Power Failure Back-up Module
(with control power backup function)
DESCRIPTIONS
TMS01/032E
8.7 Setting Power Failure Detection Delay Time
There is detection delay time (filter) in power failure detection circuit for 3-phase AC200V
input not to detect instantaneous voltage drop of power source. This detection delay time can
be changed from 0msec to 15msec by changing the setting of the rotary switch SW1 located
in front of Power Failure Backup Module. When detection delay time is set shorter, the
detection sensitivity get better, but it’s liable to miss-detect instantaneous voltage drop as
power failure. The detection delay time is preset to 7msec (SW1 is set 7). There is usually no
need changing the detection delay time.
Detection delay time [msec] 0 1 2 3 4 5 6 7
SW1 setting 0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
8 9 A B C D E F