When the safety function "Safe Brake Control" is selected, the
safety function "Safe Torque Off" is activated, too. It is impossible
to select or deselect both safety functions separately.
The safety technology checks the selection signals for validation. In the case
of single-channel selection, i.e. dual-channel selection is expected due to the
wiring, but only one channel is selected, the second channel must be
selected before the first channel is deselected; otherwise, the error message
"F8301 Error when checking selection signals" is generated.
The tolerance time for the differing selection between the two
selection channels is 1 s; the parameter setting cannot be
changed.
For diagnostic purposes, the state of the safety function "Safe Brake Control"
can be read via parameter "P-0-0106, Operating status STO/SBC".
Notes on commissioning
For examples of interconnection, please refer to "
Notes on project planning
High electrical voltage! Danger to life, risk of
injury by electric shock or serious injury!
WARNING
During the time a safety function is active, power is not removed from the
motor; de-energize the motor's drive before working on it.
●
As the safety function "Safe Brake Control" cannot be deactivated, it is
only allowed to operate self-holding (electrically releasing) brakes at
drives with the optional safety technology module "L4".
If an electrically clamping brake is configured in parameter "P-0-0525,
Holding brake control word", the transition command error "C0256
Safety technology configuration error" is generated when the drive is
switched to the operating mode (OM).
●
When selecting the brake, it must be taken into account that the brake
outputs are tested online during operation. For this purpose, the outputs
are switched off for a short time (≤1 ms) and the brake is controlled. If a
very fast acting brake is used, it cannot be excluded that the brake
applies.
●
When selecting the brake, it must be taken into account that the brake
current is monitored for a fixed minimum value (see also "
●
When selecting the brake and the 24 V power supply, it must be taken
into account that the brake is directly operated with the supply voltage; a
supply voltage failure (e.g., overvoltage) can cause the brake to fail!
Bosch Rexroth AG
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
58/149
Integrated safety functions
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
