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7ML19981FB05 MultiRanger 100/200 – INSTRUCTION MANUAL Page 43
m
mmmm
Relay
s
P111–Control Functions
The control function energizes the relay coils. When the instrument is at rest (no controls
operating) the relay coils are de- energized.
P112–Relay ON Setpoint
Sets the process point at which the relay is tripped.
P113–Relay OFF Setpoint
Sets the process point at which the relay is reset.
P118–Relay Output Logic
Affects relay reaction. Reverses the logic (normally-open to normally-closed or vice
versa).
P129–Relay Failsafe
Changes how individual relays react to a failsafe condition on the instrument.
Relay Wiring Test
P119–Relay Logic Test
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.
Please verify that
ON
and
OFF
respond correctly. Use P119 as a final test once all of the
relay programming is done.
Relay Activation
The flexibility of the relay functions ensures that the MultiRanger can support relay
wiring for different systems and applications. Use the following as a guide to the most
common parameters.
Relay Setpoints and Functionality
[MR 100]: When a setpoint is reached, the corresponding action is taken. The setpoint
can be an ON or OFF setpoint related to a process variable.
[MR 200]: The setpoint can be an ON or OFF setpoint related to a process variable, or a
timed setpoint based on interval and duration.