ABB eVM1 Installation And Service Instructions Manual page 62

BLOCK from Interlocking Inputs:
Each active protection function can be blocked by the Interlocking inputs in the Logic Configuration
Tab Window.
The active protections have a selectable box. When the relative Interlocking Input is active (i.e.
a voltage above the activation threshold is applied) all the ticked protection functions will be put
into PASSIVE status and are temporarily disabled; all internal registers and timers are cleared.
In the example below, Interlocking Input 1 is used to block all overcurrrent protections while
Interlocking Input 2 is used to block all earth fault protections.
Fig. 49
14.6.1.2 Protection Logic, Output Signals
Each protection of the Start and Trip logical outputs are only active when the function is in Start or
Trip status respectively.
By combining Start and Trip logical outputs from Protection Functions, the general Start and Trip
signals are obtained and can be provided through available digital outputs (Protection Start 1 or
Protection Start 2, Protection Trip 1 or Protection Trip 2).
Fig. 50 Logical Network for START signal
Fig. 51 Logical Network for TRIP signal
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