Yaskawa GPD503 Drive User Manual download pdf (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 X = Disabled (Factory

setting)

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.

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Yaskawa GPD503 Drive User Manual Page 53