Output Phase Loss Enable (Parameter Active For V/Hz Only); Carrier Frequency (Khz); V/Hz Or Vector Mode Regulation - Reliance electric GV3000/SE Instruction Manual

P.045

Output Phase Loss Enable (Parameter active for V/Hz only)

Parameter Range: OFF = Disable output phase loss diagnostic.
ON = Enable output phase loss diagnostic.
Initial Setting: ON
Type: Tunable (at rest or during operation)
Description: This parameter is used to enable the output phase loss detection diagnostic.
This diagnostic detects phase loss between the drive and the motor. When the
diagnostic is enabled and output phase loss is detected, a drive fault is logged (OPL
is displayed).
The output phase loss diagnostic can be disabled to avoid nuisance faults which
may occur, for example when a smaller motor is used with a large power unit.
P.047

Carrier Frequency (kHz)

Parameter Range: 2 = 2 kHz Carrier Frequency,
4 = 4 kHz Carrier Frequency
8 = 8 kHz Carrier Frequency
Initial Setting: Power unit dependent
Type: Configurable (in standby only)
Description: This parameter can compensate for acoustic noise by allowing adjustment of the
switching frequency of the transistors in the inverter bridge.
Keeping the carrier frequency at 8 kHz will ordinarily provide the quietest motor
operation.
Setting the carrier frequency above 2 kHz results for some power units in the
derating of the maximum output current. See instruction manual 49'1327 for the
power unit ratings.
Power Unit Nominal Current is dependent on Power Unit size and selected
Regulation Mode (P.048) and Carrier Frequency (P.047). Output variable P.095
provides Power Unit Output Amps corresponding to the maximum settable Current
Limit (P.005) in percent for selected Regulation.
P.048

V/Hz or Vector Mode Regulation

Parameter Range: UEC = Vector mode,
U-H = V/Hz mode
Initial Setting: U-H
Type: Configurable (in standby only)
Refer to: U.001 Encoder PPR
Description: This parameter selects the drive regulator type: vector or volts/hertz.
For volts/hertz control, the drive provides open-loop volts per hertz regulation which
is appropriate for general purpose applications.
For vector control, you may select either flux vector control (FVC) or sensorless
vector control (SVC).
Flux vector control uses the actual encoder value for speed feedback and,
therefore, requires an encoder mounted to the motor and connected to the drive.
You program the drive for FVC by first selecting UEC in parameter U.048, and then
selecting the PPR value of the encoder in parameter U.001.
49'1329 e
4 - GENERAL PARAMETERS, DESCRIPTION
(for 'European Default Selection' P.049)
GV3000/SE 4 - 27