TECO A510s - Page 284

4-206
07-23: Voltage recovery time
- Sets the voltage recovery time.
- Sets the time for the inverter to restore the output voltage from 0V to the specified V/f level after speed search
function is completed.
07-24:
Direction-Detection Speed Search Selection
0:
Disable Direction-Detection Speed Search
Speed search is executed using speed search operating current defined in parameter 07-20. In case speed
search is not successful (e.g. motor speed is too low) a speed search time-out warning is displayed. Set 07-19 to
value greater than 0 to enable DC braking at speed search if a time-out occurs frequently.
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 03-07 = 34) or from max. frequency (external speed search command 1, 03-00 to 03-07 =
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.
0: Enable
(No mechanical brake is installed)
1: Disable (Mechanical brake is installed)
07-27: Start Selection after fault during SLV mode
0: Speed search start: Speed search is executed after a fault in SLV mode.
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
0: Speed search start: Speed search is executed after base block is removed.
1: Normal start:
Speed search is not enabled.
Note: Set parameter to 1 for control mode is V/F (00-00 = 0) or 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 base
block command is removed the inverter will accelerate from min. frequency.