Siemens SIMODRIVE POSMO A User Manual

5
5.5 SIMODRIVE POSMO A functions
5-190
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
The ”controller enable” is withdrawn for the following events:
 STW.0 (ON/OFF 1) = 1/0 signal
 STW.2 (operating condition/OFF 3) = 1/0 signal
 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What happens if the ”controller enable” is withdrawn?
 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
 The brake control signal is withdrawn
The brake control signal is withdrawn, if
–n
act
= n
holding brake
(P59), or
– The brake delay time (P60) has expired
 Start the controller inhibit time (P61) and then cancel the pulses
Speed actual value
Output signal
”control external
holding brake”
Holding brake
ÄÄÄÄ
ÄÄÄÄ
ÄÄÄÄ
P61 Holding brake
controller inhibit time
Drive is actively braked
(e.g.: regenerative braking)
Speed setpoint
”Internal pulse enable”
t
t
t
t
t
n
holding brake
P60 Holding brake
brake delay time
P59
Time
to close the holding brake
1
0
1
0
1
0
Positioning
mode
OFF 1 – OFF 3 – fault
Fig. 5-18 Closing the brake: Behavior when withdrawing ”controller enable”
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loop control is only withdrawn after the brake has been closed.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.
Closing the brake
when withdrawing
the ”controller
enable”
Objective when
setting
5 Description of the Functions
02.9904.01

Siemens SIMODRIVE POSMO A Specifications

General

Brand	Siemens
Model	SIMODRIVE POSMO A
Category	Engine
Language	English