14
5.5 PROGRAMMING THE LEVEL SENSOR
The tank level sensor comes pre
-
programmed. However, the setpoints can be adjusted to configure the system
specifically for the application.
The level sensor displays the tank level as a percent (%) full. However, all parameters are measured in millimeters
(mm) from the bottom of the probe. The usable range of the level sensor is between 10 mm and 410 mm from the
bottom of the probe, a 400 mm range.
There are two switching outputs that can be adjusted: Q1 and Q2. Output Q1 is used for the Auto
-
Refill feature and
output Q2 is used for the Low Tank Level indicator.
*Italicized parameters are preset and should only be changed in the event of a factory reset.
To access the above parameters from the main display (% full), press and hold the
“
Set
”
button. Use the up and down
arrows to navigate to
“
Q1MENU
”
or
“
Q2MENU
”
and press the
“
Set
”
button. Use the up and down arrows to navigate
to
“
SP1
”
or
“
RP1
”
(or
“
SP2
”
and
“
RP2
”)
and press the
“
Set
”
button. Use the up and down arrows and the
“
Set
”
button
to change the numeric values assigned to the given parameter. Instructions for setting other parameters can be found
on pages 32
-
35 of the provided component manual (LS00FP1000G1NMB).
Assuming the tank has been initially filled and given the values in the above table, as the system is being used the level
in the tank will decrease. Once the fluid reaches 250 mm from the bottom of the probe, 63% full (100% * (250
-
10)/380=63%), Auto
-
Refill will turn on. As the fluid level rises and reaches 390 mm from the bottom of the probe,
100% full, Auto
-
Refill will be turned off.
If Auto
-
Refill is switched off or the supply is interrupted, and the fluid level reaches 10 mm from the bottom of the
probe, 0% full, the Low Tank Level indicator will turn on. This is intended as a warning that the system is not
automatically refilling. The Low Tank Level indicator will turn off once the fluid level rises above 50 mm from the
bottom of the probe, 10% full.
Operating within a small range with the tank mostly full, like in the above example, is ideal for maintaining the
temperature of the system while using Auto
-
Refill. When using Auto
-
Refill and the supply fluid is within 15°F of the
final temperature, it is not necessary to use a short
-
range fill cycle.
HEATING THE SYSTEM
Set temperature on the heater via the heat controller screen on the front panel. Once the system is filled and the
heating fluid is circulating properly, turn on the heater. Wait until the system reaches the desired setpoint. At this
point the fluid has expanded to its full capacity, and any excess will escape the relief port on the return reservoir.
-
For spray control operation please reference the provided 1750+/2150+ Spray Control Panel Owner
’
s Manual.
Output
Parameter
Name
Description
Preset
Q1
SP1
Switching Point 1
High Level –
Auto
-
Refill stops filling
390 mm
RP1
Reset Point 1
Low Level –
Auto
-
Refill begins filling
250 mm
OU1
Switching Function
Output type –
(Normally Open/Closed)
Qx
-
Hnc
Q2
SP2
Switching Point 2
Not Low Level –
Indicator will turn off at or
above this value (SP2=RP1 + 10)
50 mm
RP2
Reset Point 2
Low Level –
Indicator will turn on at or below
this value (RP2=RP1)
10 mm
OU2
Switching Function
Output type –
(Normally Open/Closed)
Qx
-
Hno
NA
QAHIGH
High Range Limit
Maximum tank level (QAHIGH>QALOW)
390 mm
NA
QALOW
Low Range Limit
Minimum tank level
10 mm
NA
Length
Probe Length
Length of probe for this application
558 mm
NA
DspVal
Display Value
Sets display value to % of usable range
Percen