Festo Контроллеры двигателя SFC-LAC - Manual (Page 30)

1. System overview
1−8
Festo GDCP−SFC−LACI−CO−EN en 0812NH
· Note also the following points:
Remedy Reaction
Cancelling the ENABLE
signal at the controller
interface Ĉ Without brake/clamping unit:
The controller end stage is switched off. The effective load on the
drive will continue to move due to inertia, or it will fall if mounted
in a vertical or sloping position.
Ĉ When using a brake/clamping unit:
If the drive moves when ENABLE is cancelled, then it will initially be
brought to a standstill (using quick stop deceleration). As soon as the
drive is standing still, the configured brake output (Out1 or Out2) is
reset: The brake/clamping unit closes. Simultaneously, the switch−off
delay time begins to run. The SFC−LACI still controls the position. The
controller end stage is switched off after the switch−off delay.
Switching off the load
voltage or cancelling
the hardware enable The load voltage is switched off. The effective load on the drive will
continue to move due to inertia, or it will fall if mounted in a vertical or
sloping position. The controller may report the drop out of the load
voltage after a few seconds have initially passed. Accordingly, a brake
is only closed after a delay. Refer also to the information on using the
hardware enable in section 5.6.9.
Cancelling the STOP sigĆ
nal at the controller interĆ
face. By default, the drive brakes with the Quick stop deceleration" (can be
set via FCT or CI object 6085h).
As an alternative, the braking ramp in the respective positioning record
can be used, see CI object 605Eh.
Triggering a limit switch The drive brakes with the limit switch deceleration (can be set via FCT or
CI object 6510/15h). The error message Limit switch actuated" is isĆ
sued. The drive is held stationary in a controlled position. The brake is
opened (if present), Err=0, MC=0, Ready=0 (if no automatic brake is
para−
metrised).
Note
Remaining path check for the STOP signal
If the parametrised stop ramp is not sufficient to stop the
drive before reaching the software end point, the decelerĆ
ation (braking) is raised to the maximum value (as far as
possible).