D3-DA 3xx/x
Safety functions
Project engineering manual V1.07
71
© KEBA
DANGER!
Hazard due to dangerous voltage!
●
In the state "STO" motor and mains cable, braking resistor and DC link
supply cable will carry dangerous voltages in relation to the PE conduc-
tor.
●
Without additional measures it is not possible to implement "shutdown of
the power supply in an emergency" using the function "STO". There is
no galvanic isolation between motor and drive controller! As such there
is a risk due to electric shock and other risks of an electrical origin
DANGER!
Hazard due to axis movement at the motor!
●
If the action of external force has to be expected with the safety function
"STO", e.g. due to a suspended load, this movement must be safely pre-
vented by additional measures, e.g. by means of two brakes, locking de-
vice or clamping device with brake.
●
Despite correct shutdown, in the case of a short-circuit in two offset
branches of the power section an axis movement of max. 180° may be
triggered electrically.
8.1.1
Configuration of STO safety function
Via DIP switch (S-ADR) the desired behaviour of the safety function STO
can be configured. Because the D3-DA 3xx/x can be equipped as single-,
double- or tripple axis module, it must be configured via DIP switch on which
axis the STO takes affect.
The following presettings can be choosen:
Settings
Description
Function
affect to
Separate switching of all
existing axis
(Default setting)
STO1:
Axis 1
STO2:
Axis 2
*)
Axis 3
*)
Common switching of all
existing axis
STO1:
Axis 1
Axis 2
*)
Axis 3
*)
STO2:
Without function
