Yaskawa GPD503 Drive - Manual (Page 53)

2.16 MOMENTARY POWER LOSS RIDE-THRU
Sn-11: Protective Characteristics Digit 3 [ X X X X ] : Power Loss
Select 2 Ride-thru Protection
X 0 X X = Disabled (Factory
setting)
X 1 X X = Enabled
The setting of this digit either enables or disables the ride-thru feature of the GPD 503. If
disabled, the unit will stop immediately whenever a power loss occurs. If enabled, the GPD
503 will continue to operate during a momentary power loss of up to 80%, under the
following conditions:
If the loss exceeds the identified time period, the GPD 503 will stop.
— 230/460V/575V units 5HP and above - max “ride-thru”: 2 seconds
— 230/460V units less than 5HP - “ride-thru”: 1 second (as standard)
The ride-thru capacity of the 230/460V units less than 5HP can be extended to 2 seconds
(2000 msec) with the addition of an optional external capacitor unit.
Cn-37: Power Loss Ride-Thru Deactivation Time Range: 0.0 to 2.0 seconds
If the loss exceeds the length of time identified by Cn-37, the GPD 503 will stop. The
factory setting of this constant, in 0.1 second increments, is related to the GPD 503’s HP
rating, as set by Sn-01.
2-20.2