6
6.9
Motor holding brake
6-573
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
The axis is actively braked when the ”controller enable” is withdrawn.
The brake delay time (P0853) is started when the ”ramp–function gene-
rator enable” signal drops–out, i.e. at nset = 0.
At n = n
holding brake
(P0852), the following is valid:
The ”open holding brake” output signal is deleted
Note:
After the brake delay time has expired (P0853), the ”open holding
brake” output signal is always canceled.
The time required to close the holding brake should be adjusted so that
the control is only withdrawn after the brake has closed. This prevents
an axis from possibly sagging.
Speed actual
value
Output signal
”open holding brake”
Holding brake
Controller
enable
ÄÄÄÄ
ÄÄÄÄ
P0854 Controller
inhibit time
Drive braked actively
(e.g.: regenerative braking)
Speed–controlled
operation
Speed setpoint
Internal
controller
enable
Note:
In the example, the
”ramp–down time, ramp–function
generator” = 0
t
t
t
t
t
t
t
n
holding brake
P0853
Brake delay time
Output signal
”status, controller
enable”
P0852
Time
to close the holding brake
1
0
1
0
1
0
1
0
1
0
Ramp–function
generator
active (internal)
t
1
0
Fig. 6-74 Closing the brake: Behavior when withdrawing ”controller enable”
Closing the brake
when withdrawing
the ”controller
enable”
Objective for this
setting
6 Description of the Functions
01.99
07.03
06.04