Siemens SINAMICS S120 Function Manual page 435

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To start the function, proceed as follows:

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.

It is only permissible to activate brake control monitoring for "Booksize" power units and

"Blocksize" power units with "Safe Brake Relay" (p1278 = 0).

Use for braking with feedback

For braking with feedback (p1275.5 = 1), the brake control reacts to the feedback signal

contacts of the brake. If the timer p1216 is greater than the time to the feedback signal, the

startup is delayed to the corresponding time difference.

In order to startup without delay when possible, the set period p1216 must be shorter than the

time until the feedback signal comes. If the period is set shorter, the alarm "A07931, brake does

not open" appears, however.

1. Activate "Release with feedback signal" (p1275.6 = 1).

The pulse enable (BO: r1229.3) and setpoint enable (BO: r0899.15) are now independent

of the set time level (p1217, p1216). The associated enable is determined only by the

feedback signal (BI: p1222, BI: p1223). The timers (p1216, p1217) only influence the alarms

A07931 "Brake does not open" and A07932 "Brake does not close".

2. Optional: In order that the alarms no longer appear, set the two timers (p1217, p1216) to 0

Result: The monitoring of the brake and the display of the alarms are switched off.

Speed controller response when a brake is opened

Information on the speed controller response in vector control mode is provided in Chapter

"Speed controller (Page 219)".

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Function modules

9.3 Extended Brake Control