D3-DA 3xx/x
Safety functions
Project engineering manual V1.07
80
© KEBA
8.7
Validation of SBC safety function
The safety function SBC has to be validated against the safety requirements
from the application in the following cases:
●
During commissioning
●
After changes of the application
●
After repair or device replacement
●
Once a year
The following table shows the test steps to be undertaken. The table has to
be worked through from top to bottom.
Description
State/Event
Expected result
Initial state
●
System is switched on
●
SBC is activated
●
Brakes are released
(STO1 input is active)
Brake(s) is/are released.
Test step 1
STO1 input becomes inac-
tive.
Brake(s) is/are applied and
there is no error message.
Test step 2
STO1 input becomes active.
Brake(s) is/are released.
8.8
Validate cross circuit test
If monitoring of STO inputs is undertaken by means of usage of testoutputs,
e.g. usage of testoutputs of the supply module, this has to be validated in the
following cases:
●
During commissioning
●
After changes to the application
●
After repair or device replacement
The following table shows the test steps to be undertaken. The table must
worked through from top to bottom.
Description
State/Event
Expected result
Initial state
●
System is switched on
●
Inputs of safety func-
tions are active
(switched on).
●
Axis module has re-
leased brake(s).
*)
.
Brake
*)
and torque are en-
abled.
Test step 1
One of the testoutputs is
shorting against 24 V
The safety system switchs off
break
*)
and torque after max.
2,4 s and an error message
occures.
*)
Only applies in case SBC is active.
