Lenze SO30 8400 protec - Manual (Page 53)

Safety option 30
Safety functions
Safe enable switch
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53 EDS84DPSO01 EN 2.1
Preconditions
A safe input must be parameterised and interconnected as enable switch. You can only
connect and parameterise one enable switch. The ES bit of the safety bus must be
deactivated (C15113).
The enable switch function can also be selected via the safety bus with the ES bit, unless
a safe input is parameterised as enable switch.
The special operation must be activated.
The plausibility check rejects ambiguous settings until they are parameterised correctly.
Activation
How to activate the function:
ƒ Via a safe input which has been assigned to the function by parameterisation. In
addition, the requested operating mode depends on OMS: Function at LOW level
(C15202).
Example:
Normal operation at LOW level
The special operation is activated via a key−operated switch. The "Special operation
with LOW level" function is not permissible for a key−operated switch which uses the
special operation for short−circuiting purposes. An open circuit in the cable of the
switch would activate the special operation which is otherwise only possible with a key.
Special operation at LOW level
The special operation is active if a safety grid (safety door) is openend, i.e. the safe input
provides a LOW level and executes the parameterised stop function.
Only if no safe input is used, the function can only be activated via the safety bus:
ƒ A data telegram with corresponding contents must be transmitted to the standard
device.