Siemens SIMODRIVE POSMO A User Manual page 191

5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
Closing the brake
when withdrawing
the "controller
enable"
Speed setpoint
Speed actual value
n
holding brake
Output signal
"control external
holding brake"
"Internal pulse enable"
Holding brake
Fig. 5-18 Closing the brake: Behavior when withdrawing "controller enable"
Objective when
setting
5-190
The "controller enable" is withdrawn for the following events:
S
STW.0 (ON/OFF 1) = 1/0 signal
S
STW.2 (operating condition/OFF 3) = 1/0 signal
S
A fault occurs where it is possible to brake in an orderly fashion
(e.g. software limit switch actuated)
What happens if the "controller enable" is withdrawn?
S
The axis is actively braked and the brake delay time started
– The axis is actively braked according to the data entered (ramp
or maximum deceleration)
– The brake delay time (P60) is started
S
The brake control signal is withdrawn
The brake control signal is withdrawn, if
– n = n
act holding brake
– The brake delay time (P60) has expired
S
Start the controller inhibit time (P61) and then cancel the pulses
Positioning
mode
P59
1
0
1
0
1
0
The controller inhibit time should be harmonized so that the closed–
loop control is only withdrawn after the brake has been closed. This
prevents an axis from possibly sagging.
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
(P59), or
OFF 1 – OFF 3 – fault
Drive is actively braked
(e.g.: regenerative braking)
P60 Holding brake
brake delay time
P61 Holding brake
controller inhibit time
Ä Ä Ä Ä
Ä Ä Ä Ä
Ä Ä Ä Ä
Time
to close the holding brake
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