4-168
07-24=1: Enable Direction-Detection Speed Search
At start the current controller will send a step current to the motor (07-19) to determine the motor direction.
Once direction is determined the current controller will perform a speed search using speed search
operating current defined in parameter 07-20. Speed search is executed after a momentary power loss
(external speed search command 2, 03-00 to 03-05 = 34) or from max. frequency (external speed search
command 1, 03-00 to 03-05 = 19). Speed search direction will follow the speed command.
07-26: SLV Speed Search Function
- In SLV mode (00-00 = 2) set the stop mode to the coast stop (07-09 = 1) or to the coast to stop with
timer (07-09 = 3). After a stop command is issued (coast to stop or coast to stop with times) the speed
search function is automatically activated for the next start.
07-26=0: Enable (No mechanical brake is installed)
07-26=1: Disable (Mechanical brake is installed)
07-27: Start Selection after fault during SLV mode
07-27=0: Speed search start: Speed search is executed after a fault in SLV mode.
07-27=1: Normal start: Speed search is not enabled.
Note: Set the parameter to 1 (normal start) after a fault has occurred and a mechanical brake is used to
stop the motor.
07-28: Start after external Baseblock
07-28=0: Speed search start: Speed search is executed after base block is removed.
07-28=1: Normal start: Speed search is not enabled.
07-32: Speed Search Mode Selection
0: Disable: The inverter start to run from the lowest output frequency but it won’t limit the other functions of
trigger speed search.
1: Execute a Speed Search at Power On: The inverter executes a speed search at power on when
entering first run command. It start the motor from found frequency.
2: The inverter will start speed search upon the motor run to find the exact frequency.
07-33: Start Frequency of Speed Search Selection
0: Maximum Output Frequency of Motor: The inverter start speed search from the maximum output
frequency of motor.
1: Frequency Command: The inverter start speed search from setting frequency command.
Notes:
- Set parameter to 1 for the control mode of SLV mode (00-00 = 2) when the external base block
active time is longer than the time the motor needs to come to a complete stop. After the external
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