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Chapter 12
Special functions
Regio Midi manual
Condensation sensor
Special input CI
There is a special input (CI) on all Regio controllers. This input is intended for Regin’s
condensation sensor, KG-A/1, and functions internally as a digital input, i. e. condensation or
no condensation.
When the condensation sensor is activated, the cooling control is blocked and the controller is
set in neutral position. When condensation ceases, the controller will start controlling from the
neutral position.
Window contact
When window contact has been configured, the controller is set to normal mode on closed
window. On open window, the controller is set to off mode, the heating and cooling outputs
are set to 0 V and the frost protection function is activated.
Run indication, DI2
Digital input 2 (DI2) can be configured for run indication of e.g. an air handling unit. This
indication can then be read in EXOline and Modbus. The change is made in parameter 18.
Frost protection
Regio has built-in frost protection, which is activated when the controller is not in use. The
frost protection prevents the temperature from dropping below 8°C. Return to normal fan speed
and control occurs automatically when the room temperature exceeds 8°C.
High/low room temperature alarm
High/low temperature alarm is a function to indicate if the room temperature is too high or too
low.
The high room temperature alarm will trigger when the room temperature exceeds the
configured high temp limit (FS=40°C).
The low room temperature alarm will trigger when the room temperature falls below the
configured low temp limit (FS=15°C).
The alarms are implemented as points that trigger when the temperature either exceeds or falls
below the limits, and return as soon as the temperature returns. There is no advanced alarm
handling, incorporating blocking or acknowledging or so forth. There is only an indication for
faulty temperatures. All other alarm and alarm handling functions must be handled by a
supervisory system.
Lighting control
UO3/DO4/DO1 can be used for lighting control. When UO3/UO4/DO1 is configured for
lighting control, the following applies:
Digital input 1
UO3/UO4/DO1 is activated when presence is detected via DI1. The output then remains active
for as long as presence is detected. The Standby/Occupied/Bypass operating modes are active
as usual.
Off mode
If the controller is in Off-mode (Off/Unoccupied), the occupancy input (DI1) will be active if
UO3/DO4/DO1 is configured for lighting control.
Occupancy button
This button still controls On/Off and forced ventilation. If UO3/DO4/DO1 is configured for
lighting control, the output will not be activated if a button is pressed.