Description; Examples - Siemens Sinamics S110 Function Manual

Drive functions
7.3 Function modules
Table 7- 25 Status message: Extended brake control
Signal name
Command, open brake (continuous
signal)
Pulse enable, extended brake control
Brake does not open
Brake does not close
Brake threshold exceeded
Value below brake threshold
Brake monitoring time expired
Request, pulse enable missing/n_ctrl
inhibited
Brake OR logic operation result
Brake AND logic operation result
7.3.4.3

Description

The "Extended brake control" function allows complex braking control for e.g. motor holding
brakes and operational brakes.
The brake is controlled as follows (the sequence reflects the priority):
● Via parameter p1215
● Via binectors p1219[0...3] and p0855
● Via zero speed detection
● Via a connector interconnection threshold value
For an AC drive with "Safe Brake Relay," the "Safe Brake Control" safety function requires
that the type of the brake control be set in parameter p1278, to "Brake control with diagnostic
evaluation" (p1278 = 0).
7.3.4.4

Examples

Starting against applied brake
When the device is switched on, the setpoint is enabled immediately (if other enable signals
are issued), even if the brake has not yet been released (p1152 = 1). The factory setting
p1152 = r0899.15 must be disconnected here. The drive first generates torque against the
applied brake. The brake is not released until the motor torque or motor current (p1220) has
exceeded braking threshold 1 (p1221).
This configuration is used, for example, when the drive is connected to a belt that is under
tension (loop accumulator in the steel industry).
214
Parameter
r1229.1
r1229.3
r1229.4
r1229.5
r1229.6
r1229.7
r1229.8
r1229.9
r1229.10
r1229.11
Brake status word
B_ZSW.1
B_ZSW.3
B_ZSW.4
B_ZSW.5
B_ZSW.6
B_ZSW.7
B_ZSW.8
B_ZSW.9
B_ZSW.10
B_ZSW.11
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual