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MIW-GTT-1-35-75-L22-EN-000 - 07 / 11 / 2018
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OPERATING INSTRUCTIONS
ATTENTION
5.
■
Make sure the connections are correct before you power the unit.
■
Make sure the mains supply voltage is within the admissible rated maximum
current of the product.
1.
Switch off the mains power supply before connecting any power cables.
2.
Plug load (fan) cables into the socket according to the connecting diagram.
ATTENTION
Several fans can be connected in parallel to the controller as the maximum total
current of all must not exceed the current rating of the controller. Maximum 2
separate cable plugs can be connected to the sockets on the controller as the
parallel connections are made internally.
3.
Install the PT500 temperature probe in an appropriate zone in order to measure
the relevant ambient temperature.
4.
Plug the GTT-1 into the mains electricity network.
5.
Select the operating mode by turning the control switch / knob on the right to
the relevant position (
Fig. 3
).
Fig. 3 Knob positions
a. Temperature set point selection
b. Mode selection
280
310
320
280
310
320
5.1
Manual mode
The standard configuration of the output voltages is as indicated in
Table
1
below.
Output voltage
Knob
position
0
-
1
2
3
4
5
Auto mode
Regulated
output [VAC]
0
80*
110
140
170
190
230
According to
temperature
setpoint
Speed
Off Low* Low Medium Medium Medium High
According to
measured
temperature
* Available but not connected.
5.2
Automatic mode
When Auto mode has been selected, the controller changes the five
speeds automatically according to the setpoint temperature selected via
the temperature potentiometer (
Fig. 3a
). The speed changes by increasing
/ decreasing the temperature by 1
°C
and 0,5
°C
fixed hysteresis (see the
operational diagram above).
TEMPERATURE BASED FAN
SPEED CONTROLLER
GTT-1
