Parker AC890PX Series, Engineering Reference

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D-124
A p p e n d i x D : P r o g r a m m i n g
AC890PX AC Drive
REGEN CONTROL
SETUP::MOTOR CONTROL::REGEN CNTRL
Designed for 4Q Regen Control Mode.
This function block is used to setup, sequence and monitor the operation of the drive when used in 4Q Regen Control Mode.
Parameter Descriptions
PRECHARGE CLOSED PREF: 114.01 Default: TRUE Range: FALSE / TRUE
This parameter is used to indicate the external precharge contactor is closed, i.e. the external precharge resistor is no longer in circuit.
DC VOLTS DEMAND
PREF: 114.02 Default: 720V Range: 0 to 1000V
Use this to set the demanded dc link volts for the common dc bus. It must be set higher than the peak of the mains supply, but lower than the
overvolts (820V on 400V products, 410V on 230V products).
BRAKE MODE PREF: 114.15 Default: FALSE Range: FALSE / TRUE
Setting this parameter True allows the drive to generate energy into the mains in common dc link systems. The regeneration occurs when the dc link
is higher than the DC VOLTS DEMAND level. In this mode the drive will not draw energy from the mains. The drive acts purely as a braking unit.
SYNCHRONIZING PREF: 114.09 Default: FALSE Range: FALSE / TRUE
This diagnostic reads True during the mains synchronisation period. This occurs when the drive is first run in 4Q Regen Control Mode. This
synchronising period lasts for 100ms.
SYNCHRONIZED PREF: 114.10 Default: FALSE Range: FALSE / TRUE
This diagnostic reads True when mains synchronisation has been successfully completed.
PHASE LOSS PREF: 114.11 Default: FALSE Range: FALSE / TRUE
This diagnostic reads True if the drive suspects there is a missing input phase from the mains supply.