DeltaV SIS can be used with auxiliary equipment to support other applications. Two modules are available for other applications:
The Auxiliary Relay ETA-Direct module energizes the field when Discrete Out is turned On.
The Auxiliary Relay ETA-Direct module has a connection to a Logic Solver's discrete input and discrete output channels and a connection to a dual 24 VDC power supply. Two field terminals are used to connect to the Auxiliary Relay Diode module that is located next to the field actuator as shown in the following figure.
