Eaton EDR 3000, Installation, Operation And Maintenance Manual

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EDR-3000 IM02602003E
If the relay output contacts are configured as »Latched=active«,
they will k
eep
their position even if there is a power outage within the power supply of the
protective device.
If the relay output contacts are configured as »Latched=active«, they will also
retain their position even if they are reprogrammed in another way.
This also
applies if the relay output contacts are set to »Latched is set to inactive«.
R
esetting a relay output contact that has latched a signal will always require an
acknowledgement.
The
»System OK Relay« (watchdog) cannot be configured.
Acknowledgment Options
Relay output contacts can be acknowledged:
•
Via the push-button »C« at the operating panel;
•
If »
Latched is active«, each relay output contact can be acknowledged by a signal (for example: It could be reset by
the state of a digital input);
•
Via the module »Ex Acknowledge« where all relay output contacts can be acknowledged at once if the signal for
external acknowledgment that was selected from the »Assignment list« becomes true (e.g.: the state of a digital input);
and
•
Via Communication (Comm), all relay output contacts can be acknowledged at once.
Relay output contacts can be set by force or disarmed (for commisioning support,
please refer to the “Service/Disarming the Relay Output Contacts“ and
“Service/Forcing the Relay Output Contacts“ sections).
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