Siemens SIMODRIVE POSMO A User Manual page 190

02.99 04.01 10.07
Open brake When the brake control is activated, when the status changes from
"ready" to "operation enabled", the brake is opened. At the same time,
the pulses are enabled and the axis goes into closed–loop controlled
operation without a traversing task. In the "Positioning" mode (P700 =
2), the "holding controller" (P57) is switched-in with the factory default
setting of P56.2 = 0 (from SW 1.3). In the "speed setpoint" mode
(P700 = 1), it is switched-over to "P gain n-controller standstill" (P54).
In order to give the brake the necessary time to mechanically open, the
drive starts after the brake opening time (P58).
The drive goes into the "operation enabled" status after the time in P58
has expired.
Objective when The brake opening time should be selected, so that after the "controller
enable" is issued, the speed controller becomes active when the motor
setting the brake
holding brake opens. For all other settings, the control acts against the
opening time
brake.
The following applies:
Brake opening time (P58) w Time required to open the holding brake
"Controller enable"
Output signal
"control external
holding brake"
Holding controller
Speed setpoint
Speed controller active
Holding brake
Fig. 5-17 Opening the brake: Behavior when the status changes from "ready" to "operation enabled"
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Ready Transition
1
0
1
0
1
0
P58 (holding brake, brake opening time)
1
0
1
Ä Ä Ä Ä Ä
0
Ä Ä Ä Ä Ä
Time
to open the holding brake
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
Operation enabled
5
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t
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