Relay Activation - Siemens HydroRanger 200 HMI Operating Instructions Manual

7.3.8

Relay activation

The flexibility of the relay functions ensures that the device can support relay wiring for
different systems and applications. Use the following as a guide to the most common
parameters.
Relay setpoints and functionality
The setpoint can be an ON or OFF setpoint related to a process variable, or a timed setpoint
based on interval and duration.
Functions affected by setpoint are configured by parameters that determine the application
requirements such as timing. Relay Function (2.8.1.4.) (Page 195) sets the function
requirements. Other function parameters:
● Delay Between Starts (2.8.2.8.1.) (Page 207)
● Power Resumption Delay (2.8.2.8.2.) (Page 207)
● Relay duration (2.10.1.3.) (Page 211)
Relay logic is modified
Normal operating conditions mean that alarm relays are energized and pumps are de-
energized. This can be reversed using Relay Logic (2.8.1.11.). (Page 199)
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
Operating
7.3 Relays
99