Working with control panel
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4. Working with control panel
4.1. Connections
Control unit is designed to work with two A315
grain moisture content sensors.
One of the sensors has address
A
, and the second one – address
B
.
fig 3. Wiring diagram
Control panel is supplied with two pre-wired cables (3 m each) for connecting
the sensors. This allows to quickly plug the sensors and check their operation before
installation on the grain dryer and to learn how to work with the control panel.
For installation on the grain dryer 7-terminal junction box should be mounted at
the distance of up to 3 m from a sensor and sensor cable should be connected to it.
Communication lines (4 twisted pairs) of the required length (up to 100 m) from each
junction box are wired to the operator station where control panel is installed. Con-
nections should be performed according to wiring diagram shown in fig. 3.
In order to check operation of measurement system place both sensors on a ta-
ble, connect the cables from control panel to sensors
A
and
B
and power up the con-
trol panel. After startup the display should look as shown in fig. 4. Two green indica-
tors show that sensors are ready for measurements.
