Regio Midi manual
Chapter 6
Installation
19
Terminal
Designation
Operation
23
UO1
Control of heating (FS) cooling or heating/cooling via change-over.
For 0...10 V DC valve actuators, 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 suit actuator type 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 5, 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 output heating or cooling (FS).
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 5, 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, PT1000 or supply air temperature limitation
sensor. Measuring range 0...50°C. The sensor is connected between
terminals 30 and 41, AGnd.
See Table 5, 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 33 and 40, +C. Closed contact indicates closed window.
See also the section Occupancy detector in the chapter Operating modes.