Siemens SINUMERIK 840D sl Commissioning Manual page 119

– This option is selected if a Voltage Sensing Module has been detected.
– If you activate the external brake control module option, the monitoring of the brake
– If you set the option "Activate external brake control module", the function module for the
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
control module is activated. This requires the appropriate terminal wiring (parameter
p3866 to terminal X21.4 for S120 Booksize,) to have been established, otherwise alarm
206900 is output.
brake control module is activated. This can be used to monitor the module.
To do so, set the corresponding terminal wiring (e.g. parameter p3866 to terminal X21.4
for S120 Booksize), otherwise alarm 206900 is output. In addition, make a BICO
interconnection from the infeed to the free terminals on the NCU. The parameters that
must be connected for this purpose can be found in the function diagram for the brake
control module in the SINAMICS S120 List Manual.
Commissioning NC-controlled drives
6.3 Guided commissioning of SINAMICS drives
119