Function modules
8.3 Extended Brake Control
Drive functions
474 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Extended Brake Control
Features
● Forced brake release (p0855, p1215)
● Closing of brake for a 1 signal "unconditionally close holding brake" (p0858)
● Binector inputs for opening or closing the brake (p1218, p1219)
● Connector input for threshold value for opening and closing the brake (p1220)
● OR/AND block, each with two inputs (p1279, r1229.10, r1229.11)
● Holding and operational brakes can be activated
● Function for monitoring brake feedback signals (r1229.4, r1229.5)
● Configurable responses (A07931, A07932)
● Closing of brake after "Enable speed controller" signal has been canceled (p0856)
The "Extended brake control" function allows complex braking control, e.g. for motor holding
brakes and operational brakes.
The brake is controlled in the following way. The order shows the prioritization:
● Using parameter p1215
● Via binectors p1219[0...3] and p0855
● Using zero speed detection
● Via the 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). This parameter is automatically set for booksize components.
1. Activate the "Extended brake" function module using the commissioning Wizards.
You can check that it has been activated in parameter r0108.14.
Brake control will be activated automatically (p1215 = 1) when the Motor Module has an
internal brake control and a connected brake has been found.
2. If there is no internal brake control, activate the control using p1215 = 3.
Unless you change the default settings, the extended brake control function behaves in
exactly the same way as the simple brake control function.
3. In the case of brakes with a feedback signal (p1222), interconnect the inverted signal to
the BICO input for the 2nd feedback signal (p1223). You set the switching times of the
brake in p1216 and p1217.
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