Extended Brake Control - Siemens SINAMICS S120 Function Manual

Function modules

9.3 Extended Brake Control

9.3 Extended Brake Control
Function description
The "Extended brake control" allows complex brake controls, such as for motor holding brakes
and service brakes.
The brake is controlled in the following manner. The order represents the priority:
● Via parameter p1215
● Via binectors p1219[0...3] and p0855
● Via standstill 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.
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)
Commissioning the function
Destruction of the holding brake as a result of incorrect parameterization
If the drive moves against the closed holding brake, this can destroy the holding brake and as
a consequence result in death or severe injury.
● If a holding brake is being used, do not set p1215 = 0.
● Set all the relevant parameters correctly.
432
WARNING
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions