Timer Parameters - KEB COMBIVERT F5 Reference Manual

LT - Timer Parameters
6.9 LT - Timer Parameters
LT01
Brake Release Delay
LT02
Control Hold Off
LT03
Speed Start Delay
198
This timer delays the release of the brake when one of the outputs is assigned
as Brake Control or Drive On and that output is used to trigger the brake release.
The LT01 Brake Release Delay timer begins after the Drive Enable and
Direction commands have been given and the current check has completed.
The Brake Control and Drive On outputs will be active after the expiration of
the LT01 Brake Release Delay time.
The amount of time after a run command has been given that the drive will
maintain very low speed control gains to prevent any reaction to movement
or encoder disturbance while the brake is still set. If used, the timer must be
set to expire before the brake picks.
The LT02 Control Hold Off timer begins after the Drive Enable and Direction
commands have been given.
The amount of time the drive will hold the speed command at zero. This time
delay allows the brake to release before the motor starts turning. This applies
to control modes US04 Control Type = Binary Speed Selection (1), Digital
Speed Selection (0), or Serial Binary Speed DIN66019 Serv.50 (6).
For control Modes US04 Control Type = Bi-Polar Analog Speed (3),
i
Absolute Analog Speed (2), Serial Speed DIN66019 Service 49 (4), Serial
Speed DIN66019 Service 50 (5), the profile delay is controlled externally
by the controller and the drive will not clamp the value at zero speed
during this period. For these US04 Control Types this parameter will only
be used to limit the amount of time the controller can hold the speed
command at zero before a Serial Speed Command Failure or Analog
Signal Failure will occur.
The LT03 Speed Start Delay timer begins after the Drive Enable and
Direction commands have been given, current check has completed,
and the LT01 Brake Release Delay timer has expired.