The Auxiliary Relay ETA-Direct module energizes the field when Discrete Out is turned On. This module is not intended for SIL-certified applications but may be useful in lock-out or deluge applications where an unintended trip caused by a Logic Solver fault or operator error could be hazardous to personnel and equipment.
The Auxiliary Relay ETA-Direct module is paired with the Auxiliary Relay Diode module to perform the required function. A switch on the Auxiliary Relay Diode module is used to change between Energize to Actuate and De-Energize to Actuate. The Auxiliary Relay ETA-Direct module's LED shows if power is correctly installed and the state of the relay coil.
The connections on the Auxiliary Relay ETA-Direct module are the same as those on the Auxiliary Relay DTA-Inverting module.
The line fault detection states in the following table apply only when line fault detection is enabled. When line fault detection is not enabled, the On states detect opens only and the Off states detect shorts only.