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6.5 INPUT sub-menus
6.5.1 INPUT LEVEL sub-menu
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INPUT
LEVEL
SENSOR
INPUT
LEVEL
OUTRANGE
INPUT
LEVEL
FILTER
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INPUT
LEVEL
INTEGRAL
INPUT
LEVEL
CTL BAND
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INPUT
LEVEL
SP
Sets sensor input type: 1 - 6 V for probes LP20 and PA20, or
4-20 mA for probes LP20 and PA420 or DP transmitter
User can select an alarm if the input signal is out of range.
Select ON or OFF.
Acts as a damper for turbulent conditions. User can select 2,
8 or 16 second delay. Select longer delay for more turbulent
conditions.
Note: An excessive delay time can cause system instability.
Not normally used on steam boiler applications. Set to OFF.
Provides an integral action - removes the error between level
and Set Point over time.
This is the proportional band for a modulating control system, or
the open / closed switching points for an on/off system. Its central
point is always the Set Point.
The Set Point - the point from which the proportional band is
generated. It is commonly set half way between the minimum
and maximum gauge glass levels.
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INPUT
LEVEL
CAL
Calibration. The 0% and 100% CAL settings define the highest
and lowest reference points for the system, i.e. 0% and 100% of
the gauge glass.
Raise the water level to the top of the gauge glass, select MAX,
and press the
button for 3 seconds.
Lower the water level to the bottom of the glass (water must still
be visible), select MIN, and press the
OK
button for 3 seconds.
Notes: The display shows the output current or voltage for a
given level. Use the MODE sub-menu to manually open and
close the valve to assist commissioning.
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