Sync Direction; Input Power/Snubber Configuration - Reliance electric GV3000/SE Instruction Manual

H.016

Sync Direction

Parameter Range: Off = Disable Sync Mode
F = Search starts at maximum frequency in motor forward direction
r = Search starts at maximum frequency in motor reverse direction
Fr = Search starts at maximum frequency in motor forward then reverse direction
rF = Search starts at maximum frequency in motor reverse then forward direction
Initial Setting: OFF
Type: Configurable (at standby only)
Description: When starting into a rotating load is required, this parameter selects the direction in
which the drive will search in order to synchronize speed reference to motor speed.
Synchronisation means evaluation of actual motor speed / frequency after a RUN command and
setting frequency reference in inverter accordingly.
This function does not provide synchronisation after line dip.
At this evaluation the inverter outputs to motor various frequencies and checks feedback values.
This parameter defines the polarity of searching frequency to achieve shortest evaluation time:
Selection 'F' or 'r' is recommended for known rotation direction.
Selection 'Fr' or 'rF' is thought for reversing applications for mostly used rotating direction.
Note: Recheck value Current limit (P.005) and consider described notes. The procedure results in a
'Searching current' in the motor which is based on the value entered in P.005 (Current Limit).
With too high value in P.005 fault trip 'OFr' may occur.
Recheck Carrier Frequency (P.047), actual controller current rating (Refer to manual 49'1327
'GV3000 Power Unit'), and motor sizing versus controller size.
Note that when Forward/Reverse Configuration (P.027) is set to 1, setting this parameter to r, Fr, or rF
may cause the motor to operate in the reverse direction.
H.017

Input Power/Snubber Configuration

Parameter Range: 0 ... 5
Initial Setting: 0
Type: Configurable (at standby only)
WARNING:
regeneration may cause a rise in DC bus voltage. Be aware that other drives on
the bus may experience an unexpected speed increase due to the high bus
voltage. Failure to observe this precaution may result in bodily injury.
Description: General
AC-Input: - the main power supply is AC and the under-voltage is sensed from the AC voltage.
DC-Input: - the main power supply is DC and the under-voltage is sensed from DC Bus voltage.
Bus-regulator: - the deceleration time (set with P.002) may be extended automatically to prevent a
high DC-Bus voltage (HU) fault from occurring.
At regenerative mode the rising DC-bus voltage causes the deceleration time to be extended, the
frequency to be raised to keep the DC-bus voltage below high limit.
Tripping reasons would be DC-bus Overvoltage (HU) or Overfrequency (OF) at frequencies above
limit in H.022.
no bus regulator: - the bus voltage is controlled externally to the regulator, for example with a
Dynamic Braking Unit. The adjusted deceleration time is met. In case a high DC-bus voltage (HU)
fault would occur, then the selected braking unit has not met the adjusted deceleration time (P.002).
5 - 8
5 - V/HZ REGULATION MODE
When connected
GV3000/SE
to a non-regenerative common DC-bus,
49'1329 e