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13 - CONTROLLER
13.1 - Carrier numeric controller
At the top of the range, each ICM is fitted with a
programmable numeric controller.
The main functions of the controller are:
• Controlling room temperature
• Raising, lowering and adjusting the angle of venetian blinds
(optional)
• Brightening and dimming light sources (optional)
• Selecting occupied or unoccupied mode through a ZUI or
wall thermostat.
• Controlling ventilation (e.g. by selecting forced ventilation
mode).
NOTE:
For further information, please refer to the selection
manual, installation manual or start-up handbook for the
Carrier numeric controller.
13.1.1 - Fan speed controller
28
28
Input
Factory-
wired
Field-wired
Inputting a preselected speed
This input gives three speed settings to the speed controller.
The speeds are each adjustable by a potentiometer on the face
of the controller.
Setting the speed is achieved when the supply power is applied
to one of the 3 input pre-selections.
Speed control potentiometer ranges are:
- low speed:
80 to 120 V (± 15 V)
- medium speed: 110 to 170 V (± 15 V)
- high speed:
160 to 225 V (± 15 V)
The output ranges are given for a supply network input voltage
of 230 V a.c. (RMS).
Control input 0-10 V DC
This signal has two operating bands:
- between 0 and 2 V (± 150 mV), the output is zero
- between 2 V (± 150 mV) and 10 V, the output ranges from 80 V
(± 15 V) to 225 V (± 15 V), for an input voltage of 230 V a.c.
Supply network (supply to fan motor)
WARNING:
Only one of the 2 different control inputs should be selected,
otherwise the fan speed controller will be damaged.
Adjustable
potentio-
meter
0-10 V
input
Screening
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