4.11 ExP – External Protection
The external protection module »ExP« can be used to trip the circuit breaker and record the
event or alarm in case of any external event (e. g. sudden pressure, oil level, inter-tripping).
An external signal, that has been assigned to a Digital Input, is monitored, and (with some
WIC1 variants) there is the option to make this dependent on another “condition” signal.
The »ExP« module picks up if this external signal (or these two signals) become(s) active.
The availablility and number of Digital Inputs, however, depends on the WIC1 variant. For
the sake of simplicity, there is the following general concept for all WIC1 variants:
• There is always one protection stage, »ExP[1]«, active, and the »ExP[1]« trigger is•
pre-dened and set to DI2.
(Trivial exception: Device variants WIC1‑xxxxxN without any Digital Input, where
there is (obviously) no »ExP« available.)
•
For WIC1 variants with congurable Digital Inputs, this setting is a default that can
•
be changed.
• For WIC1 variants with 2 Digital Inputs, there is also a second protection•
stage »ExP[2]«, but it is deactivated by default. (Use DiggiMEC or Smart view to
activate it if it is required.)
For »ExP[2]« (if available), the user can select between two operating modes:
• Unconditional — The »ExP[2]« module trips if this external signal is triggered.•
• Conditional — The »ExP[2]« module trips if this external signal is triggered•
and – at the same time – a “condition” signal, that has been assigned to the
parameter »Condition«, is active.
For »ExP[1]«, the operating Mode is always unconditional.
169WIC1WIC1-1.0-EN-MAN
4 Protective Elements
4.11 ExP – External Protection
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