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ID 442426.04
174
WE KEEP THINGS MOVING
Drive controller
9
Manual SD6
9.2.5
Quick stop
When a quick stop occurs, the drive controller brings the connected motor
quickly to a standstill. Note that a quick stop is always performed in speed
control and without jerk limiting.
Various signals are available to trigger a quick stop. Note the differences
between the STOBER device state machine (for signal path see section
9.2.5.1) and the device state machine according to CiA 402 (for signal path see
section 9.2.5.2).
When a quick stop is triggered, the device state machine switches to the
quick
stop
state. The motor is braked with the ramp set in
I17 Quick stop
deceleration
. Note that difference sources can write to
I17
. For example, in the
Controller Based Mode
,
A578 Quick stop deceleration
is copied to
I17
.
During the quick stop the torque limit
C08 quick stop torque limit
is in effect.
Note that the torque set in
C08
can be reduced if an operating limit of the drive
controller or motor is violated by
C08
. Other torque limit values such as
C03
max-positive torque/C05
and
max-negative torque
are ignored. For a detailed
description of torque limits see section 13.6 Limit torque, force.
If the drive controller is unable to bring the motor to a standstill with ramp
I17
in time
A39 t-max. quick stop
, the motor coasts down:
1
Reference value
2
Actual course with coasting
The
Quick stop end
is activated
•
for motors without a brake when the motor has reached a standstill.
•
for motors with a brake when the brake is set (
F08 brake is closed
).
Resolution
Quick stop end
n
t
I17
Resolution
Quick stop end
n
t
2
1
A39
t=v/I17