6
6.9
Motor holding brake
6-574
Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
When the pulse enable is withdrawn, the drive coasts down, and the
”open holding brake” output signal is canceled.
After the time taken for the brake to close, the drive is braked by the
motor holding brake.
Speed actual value
Output signal
”open holding brake”
Holding brake
Pulse enable
ÄÄÄÄÄ
ÄÄÄÄÄ
ÄÄÄÄÄ
t
t
t
t
t
t
The drive ”coasts” down
The drive is braked
by the motor brake
Closed–loop speed controlled
operation
speed setpoint
Open–loop torque controlled
operation torque setpoint
Internal
controller
enable
t
Output signal
”status, controller enable”
Time
to close the holding brake
1
0
1
0
1
0
1
0
1
0
Fig. 6-75 Closing the brake: Behavior when withdrawing ”pulse enable”
Closing the brake
when the ”pulse
enable” is
withdrawn
6 Description of the Functions
01.99
06.04