Siemens HydroRanger 200 HMI, Руководство по эксплуатации, Страница: 100 / 404

Operating
7.3 Relays
HydroRanger 200 HMI
98
Operating Instructions, 06/2018, A5E36281317-AC
7.3.7 Relay-related parameters
Some parameters affect how relays react during normal conditions:
Setpoint When a setpoint is reached, the corresponding action is taken. The setpoint can
be an ON or OFF setpoint related to a process variable.
ON and OFF
setpoints
Sets the process point at which the relay is activated (ON setpoint) then reset
(OFF setpoint). These setpoints are set separately for each pump within each
pump control, and for each alarm type.
Preset Applica-
tions (2.8.1.3.)
(Page 194)
Sets the device to a preset application. These preset applications quickly set up
the device with a minimum number of parameters.
Relay Function
(2.8.1.4.)
(Page 195)
Sets the default state differently, depending on whether the relay is programmed
as an alarm or a control. The alarm function de-energizes the relay coils. During
normal operation (no alarms), the relay coils are energized. The control function
energizes the relay coils. When the instrument is at rest (no controls operating)
the relay coils are de-energized.
ON Setpoint
(2.8.1.5.)
(Page 197)
Sets the process point at which the relay is activated.
OFF Setpoint
(2.8.1.6.)
(Page 197)
Sets the process point at which the relay is de-activated.
Relay Logic
(2.8.1.11.)
(Page 199)
Affects relay reaction. Reverses the logic (normally-open to normally-closed or
vice versa).
Relay Fail-safe
(2.8.2.3.)
(Page 201)
Changes how individual relays react to a fail-safe condition on the instrument.
Relay wiring test Relay Logic
Test (3.2.7.)
(Page 255)
Checks the application wiring by forcing a relay control function,
such as a level alarm or pump control setpoint. Ensure all the
relay programming and wiring works properly.
Verify that ON and OFF respond correctly. Use this parameter
as a final test once all of the relay programming is done.