© Munters AB, 2020 63
7.7.2
D
EFINING THE
I
NLETS
/T
UNNEL
D
OORS
Define up to four relays or analog output ports as inlets or tunnel doors (each device
requires two relays or one analogue port) (refer to Mapping Devices, page 44).
•
Define:
o
Normal State
o
Position: Define how the inlet opening is controlled:
By time
Potentiometer. (relay-controlled inlets or tunnel doors only). Map each inlet/tunnel
door to a potentiometer. This option appears only if potentiometers are mapped.
o
Auto Calib.: Enable automatic calibration.
o
Power up calibration: Enable this parameter to calibrate inlets each time that Trio is
turned on.
o
Open/Close Time: Enter the amount of time required to fully open or fully close the inlet.
These parameters are only enabled when Position/By Time is selected.
o
Calibrate: Manually calibrate inlets/tunnel doors positioned by a potentiometer.
Potentiometer-controlled calibration only.
7.7.2.1
Potentiometer Calibration
If used, a potentiometer can control the opening and closing with a high degree of precision. When there
is no potentiometer, positioning accuracy tends to degrade after the inlets go through several opening
and closing cycles.
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