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Chapter 6
Installation
Regio Midi manual
Terminal
Designation
Operation
23
UO1
Control of heating (FS), cooling or heating/cooling via change-over.
For a 0...10 V DC valve actuator, max 5 mA (FS). The valve actuator's
0…10 V control signal terminal is connected to terminal 23 and its supply
terminals to terminals 10 and 11. Make sure that the reference pole G0 is
connected to the correct terminal on the actuator.
alternatively
For a 24 V AC thermal actuator, max 2.0 A. The thermal actuator is
connected between terminals 23 and 20, GDO. Using DIP-switch SW8, the
output can be set to NO or NC.
N.B:
when UO1 has been set for use with thermal actuators for 24 V AC
(digital output function) the controller utilizes time-proportional control to
give a smooth control of the connected actuator. The output signal for UO1
can be set to NC (normally closed) or NO (normally open) by changing the
position of DIP-switch SW8 for models without display and by changing
parameter 73 for models with display. This setting refers to which type of
actuator, NC or NO, it is intended for.
For choice of output function, analogue or digital, see Table , SW5. On
models with display, go into the parameter menu and change parameter 20
to thermal actuator.
alternatively
For a 24V AC actuator with spring return, max. 2.0 A. The actuator is
connected between terminals 23 and 20. This can be configured either
through the display or through Regio tool
©
. The output signal for UO1 can
be set to NC (normally closed) or NO (normally open).
24
UO2
Control of heating, cooling (FS) or heating/cooling via change-over.
For a 0...10 V DC valve actuator, max 5 mA (FS). The valve actuator’s
0…10 V control signal terminal is connected to terminal 24 and its supply
terminals to terminals 10 and 11. Make sure that the reference pole G0 is
connected to the correct terminal on the actuator.
alternatively
For a 24 V AC thermal actuator, max 2,0 A. The thermal actuator is
connected between terminals 24 and 20, GDO.
For choice of output function, analogue or digital, see Table , SW6. On
models with display, go into the parameter menu and change parameter 21
to thermal actuator.
alternatively
For a 24V AC actuator with spring return, max. 2.0 A. The actuator is
connected between terminals 24 and 20. This can be configured either
through the display or through Regio tool
©
.
30
AI1
For an external room sensor or supply air temperature limitation sensor,
PT1000. Measuring range 0...50°C. The sensor is connected between
terminals 30 and 41, AGnd.
See Table , SW7.
31
UI1
For switching between heating and cooling on a two-pipe system (change-
over).
A PT1000-sensor is connected between terminals 31 and 41, AGnd.
Measuring range: 0...100°C.
alternatively
For a potential-free contact. A potential-free contact is connected between
terminals 31 and 40, +C.
32
DI1
Occupancy detector. A potential-free contact is connected between
terminals 32 and 40, +C. Closed contact corresponds to occupancy.
alternatively
Window contact (DI). A potential-free contact is connected between
terminals 32 and 40, +C. Closed contact indicates closed window.
See also the section Occupancy detector in the chapter Operating modes.
