User Manual Instruction Manual

13-92 GV6000 AC Drive User Manual
The drive faults with a F004 – UnderVoltage fault if the bus voltage falls below Vmin
and the UnderVoltage bit in Fault Config 1 (238) is set.
The pre-charge relay opens if the bus voltage drops below Vopen and closes if the bus
voltage rises above Vclose.
If the “pulse” input is re energized and the pre-charge relay is closed, the drive
determines the power loss is over. The power loss alarm is cleared.
If the drive is in a “run permit” state, the reconnect algorithm is run to match the speed
of the motor. The drive then accelerates at the programmed rate to the set speed.
13.34.8 Decel Input
This mode can provide additional ride through time by sensing the power loss via an
external device that monitors the power line and provides a hardware power loss
signal. This signal is then connected to the drive through the “pulse” input (because of
its high-speed capability). Normally this hardware power loss input will provide a
power loss signal before the bus drops to less than Vopen.
The drive determine a power loss has occurred if the “pulse” input is de-energized or
the bus voltage drops below Vopen.
If the drive is running, the inertia ride through function is activated. The load is
decelerated at just the correct rate so that the energy absorbed from the mechanical
load balances the losses and bus voltage is regulated to the value Vmem.
If the output frequency drops to zero or if the bus voltage drops below Vopen or if any
of the “run permit” inputs are de-energized, the inverter output is disabled and the
motor coasts.
The power loss alarm in Drive Alarm 1 (211) is set and the power loss timer starts.
The Alarm bit in Drive Status 1 (209) is set if the Power Loss bit in Alarm Config 1
(259) is set.
The drive faults with a F003 – Power Loss fault if the power loss timer exceeds Power
Loss Time (185) and the Power Loss bit in Fault Config 1(238) is set.
The drive faults with a F004 – UnderVoltage fault if the bus voltage falls below Vmin
and the UnderVoltage bit inFault Config 1 (238) is set.
The pre-charge relay opens if the bus voltage drops below Vopen and closes if the bus
voltage rises above Vclose.
If power recovers while the drive is still in inertia ride through the power loss alarm is
cleared and it then accelerates at the programmed rate to the set speed. Otherwise, if
power recovers before power supply shutdown, the power loss alarm is cleared.
If the drive is in a “run permit” state, the reconnect algorithm is run to match the speed
of the motor. The drive then accelerates at the programmed rate to the set speed.