Continued
n057 : Minimum Baseblock Time Factory setting: See Table A3-1
(Min Baseblock t)
Range: 0.0 to 25.5 sec.
When a momentary power loss is detected, the drive output transistors are disabled for a
period of time determined by the setting of n057 . The n057 setting should represent
the time required for the motor residual voltage to go to zero.
When the momentary power loss time exceeds the minimum base block time, the speed
search operation is started immediately after power recovery.
n058 : V/f During Speed Search Factory setting: See Table A3-1
(SpdSrch V/F)
Range: 0 to 100 %
To prevent a fault such as OC from occurring during the speed search operation, V/f must
be set to a value lower than that required during normal operation.
V/f during speed search = V/f at normal operation x n058
5-35
WHEN MIN. BASEBLOCK TIME IS LONGER THAN MOMENTARY POWER LOSS TIME
MOMENTARY POWER
LOSS TIME
MIN.
BASEBLOCK TIME
GPD DRIVE
BASEBLOCK TIME
WHEN MIN. BASEBLOCK TIME IS SHORTER THAN MOMENTARY POWER LOSS TIME
MOMENTARY POWER
LOSS TIME
MIN.
BASEBLOCK TIME
GPD DRIVE
BASEBLOCK TIME
5.19 MULTI-FUNCTION INPUT TERMINALS (Term. S2-S6)
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