Lenze E94AxPExxxx - Manual (Page 560)

12 Basic drive functions
12.12 Brake control
560
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
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Brake activation through time-out
If a waiting time for the brake activation > 0 s is set in
C02593 , the time monitoring is active, i. e. the
brake at the latest is activated for application after the waiting time has elapsed, even if the actual
speed value is still above the threshold for the brake activation set in C02581 .
[12-34] Process of brake activation through time-out

Note!
In the Lenze setting the time monitoring is not active ( C02593 = "0 s").
 Speed setpoint
 Actual speed value
 C02581 : Brake activation threshold
 C02593 : Waiting time for brake activation
• The waiting time starts to elapse if the
speed setpoint has reached the threshold
for the brake activation.
• If the speed setpoint is still above the
threshold after the waiting time has
elapsed:
• The brake is automatically triggered to
close in automatic operation (mode 2/
12).
• The "brake activation via waiting time"
status is displayed at the BRK_dnState
status output via bit 23.
• The information "Motor brake:
Automatically activated after waiting
time has elapsed" is entered in the
logbook.
t
t
0 1
BRK_bReleaseBrakeOut
n

Œ
t
Standstill
t
Stopping