Relay Output Configuration - Eaton EMR-4000 Installation, Operation And Maintenance Manual

Relay Output Configuration

The State of the Relay Outputs can be checked within menu:
[Operations/Status Display/Name of the assembly group (e.g. RO-XX)]
The Relay Outputs can be configured within menu:
[Device Para/Relay Outputs/Name of the assembly group (e.g. RO-XX)]
Set the following parameters for each of the relay output contacts.
Up to seven (7) signals from the »assignment list« (OR-connected).
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The states of the module outputs and the signals (e.g. states of protective functions) can be assigned to the relay
output contacts. The relay output contacts are "dry-type" contacts.
Each of the assigned signals can be inverted.
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By the Operating Mode it can be determined whether the relay output works in Normally »De-Energized« or » Normally
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Energized« principle.
Each relay output contact can be set as »Latched« (Latched = active or inactive). A latched relay output contact will
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return to it's latched position after a loss of power to the protective device. A latched relay output contact will keep it´s
position as long as it has not been reset and as long as the power supply feeds the protective relay. In the case of a
loss of power to the protective device, the relays will return to the latched position once the power is restored to the
protective device (latched = relay output contacts have a memory). A latched state of a relay output contact always
needs to be reset after a power loss even if the assignments are taken away (if the assignments are reprogrammed).
Latched = inactive« :
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If the latching function is »inactive« , the relay output and, respectively, the relay output contact will adopt the state of
those pickups that were assigned.
»Latched = active«:
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If the latching function is »active« , the state of the relay output and, respectively, the relay output contact that was set
by the pickups will be stored (they have a memory that needs to be reset).
The relay output contact can only be acknowledged after reset of those signals that had
initiated the setting of the relay and after expiration of the » t-OFF delay« .
At signal changes, the minimal latching time ( »t-OFF delay« ) ensures that the relay will be maintained as picked-up or
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released for at least this period.
EMR-4000
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