Operation
41
5.8 Relay settings
1.
Press ENTER to open the Main menu.
2.
Mark SYSTEM SETUP and press ENTER.
3.
Mark RELAY and press ENTER.
Make the relay settings with the aid of the following table
:
RELAY
SELECT RELAY A, B or C
SELECT SOURCE
Choose one of the sensors listed or RTC (timer)
SET FUNCTION
ALARM: The contacts operate as a function of the turbidity measured.
FEEDER CONTROL: The contacts operate as a function of the turbidity measured.
TIMER: Control with superimposed time monitoring for all relay states.
WARNING: Operation as soon as the instrument outputs a warning.
SET TRANSFER
Choose between ENERGIZE and DE-ENERGIZE. Each relay is normally always active and reacts
to the current measured values as a function of the setting. During a calibration, fault or when the
Maint. Proc. menu is open, the relay can output a previously defined on/off status, if this substitute
status better matches the requirements of the application.
ACTIVATION
SETTING
DESCRIPTION
AS LIMIT FUNCTION
LOW ALARM
The relay is operated when the measured value drops below this value.
HIGH ALARM
The relay is operated when the measured value exceeds this value.
LOW DEADBAND
The range within which the relay remains operated after the measured
value has exceeded the low alarm. Example: If you set the lower limit to
1.0 and the deadband to 0.5, the relay continues to be operated when
the lower limit is exceeded until 1.5 is reached.
HIGH DEADBAND
The range within which the relay remains operated after the measured
value has dropped below the high alarm. Example: If you set the upper
limit to 4.0 and the upper deadband to 0.5, the relay continues to be
operated when the value drops below the upper limit until 3.5 is
reached.
OFF DELAY
Time delay (0-300 seconds) before the relay is normally switched off.
ON DELAY
Time delay (0-300 seconds) before the relay is normally switched on.
AS FEEDER CONTROL
PHASE
With the setting ”HIGH” the relay reacts to increasing measured values;
conversely, with ”LOW” the relay reacts to falling measured values.
SET SETPOINT
The measured value at which the relay is operated.
DEADBAND
The range within which the relay remains operated after the measured
value
Has dropped below the setpoint (for PHASE: HIGH)
Has increased beyond the setpoint (for PHASE: LOW).
OVERFEED TIMER
Maximum time (0-999.9 min) that the relay is operated.
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