Regin Regio Midi User manual

MANUAL
REGIO MIDI
WE TAKE BUILDING
AUTOMATION PERSONALLY
© Copyright AB Regin, Sweden, 2017

DISCLAIMER
The information in this manual has been carefully checked and is believed to be correct. Regin however, makes no
warranties as regards the contents of this manual and users are requested to report errors, discrepancies or ambiguities to
Regin, so that corrections may be made in future editions. The information in this document is subject to change
without prior notification.
The software described in this document is supplied under license by Regin and may be used or copied only in
accordance with the terms of the license. No part of this document may be reproduced or transmitted in any form, in any
fashion, electronically or mechanically, without the express, written permission of Regin.
COPYRIGHT
© AB Regin. All rights reserved.
TRADEMARKS
Some product names mentioned in this document are used for identification purposes only and may be the registered
trademarks of their respective companies.
February 2018
Document revision: 1.7
The functions described in this manual are handled using Regio tool©version 1.6

Table of contents
CHAPTER 1 ABOUT THE MANUAL ..................................................................................... 5
Terms................................................................................................................................5
More information.............................................................................................................5
CHAPTER 2 INTRODUCTION TO REGIO .............................................................................. 6
REGIO ZONE CONTROLLERS............................................................................................................6
REGIO MIDI ...............................................................................................................................7
Application examples .......................................................................................................7
CHAPTER 3 MODELS......................................................................................................... 8
Model overview................................................................................................................8
Design...............................................................................................................................9
CHAPTER 4 TECHNICAL DATA ......................................................................................... 10
DIMENSIONS.................................................................................................................. 10
COMMUNICATION ......................................................................................................... 10
Accessories for Regio Midi .............................................................................................11
CHAPTER 5 INSTALLATION PREPARATIONS..................................................................... 12
DIFFERENT VERSIONS OF TERMINALS AND PINS................................................................................12
USING LABELS...........................................................................................................................12
CONFIGURATION.......................................................................................................................13
Configuration using Regio tool©.....................................................................................13
Setting of DIP switches (models without display) ..........................................................14
CALIBRATION ...........................................................................................................................14
TROUBLESHOOTING ...................................................................................................................14
CHAPTER 6 INSTALLATION.............................................................................................. 15
MOUNTING .............................................................................................................................15
WIRING ..................................................................................................................................15
Measurement and testing during installation................................................................17
Wiring for basic models with 3 universal outputs (RC-C3H, RC-C3, RC-C3O)................18
Wiring for model for CO2control (RC-C3DOC) ...............................................................21
Wiring for model with built-in CO2 sensor (RCC-C3DOCS)..............................................23
Wiring for models for CO2control and fan control (RC-C3DFOC) ..................................25
Wiring for models for fan control (RC-CF, RC-CFO, RC-CDFO)........................................27
Wiring for models for three-point control (RC-CTH, RC-CT, RC-CTO, RC-CDTO) ............30
CHAPTER 7 CONTROL MODES......................................................................................... 32
DIFFERENT CONTROL MODES .......................................................................................................32
ADDITIONAL FEATURES...............................................................................................................38
CHAPTER 8 OPERATING MODES ..................................................................................... 42
DIFFERENT OPERATING MODES ....................................................................................................42
ACTIVATION OF THE DIFFERENT OPERATING MODES..........................................................................44
CHAPTER 9 SETPOINT CALCULATION .............................................................................. 47
CHAPTER 10 ACTUATORS ............................................................................................... 49
CHAPTER 11 FAN CONTROL ............................................................................................ 51
CHAPTER 12 SPECIAL FUNCTIONS ................................................................................... 55
CHANGE-OVER FUNCTION ...........................................................................................................55
FORCED VENTILATION ................................................................................................................55
CONDENSATION SENSOR.............................................................................................................56

FROST PROTECTION................................................................................................................... 56
HIGH/LOW ROOM TEMPERATURE ALARM ...................................................................................... 56
LIGHTING CONTROL................................................................................................................... 56
CHAPTER 13 INDICATIONS ..............................................................................................57
CHAPTER 14 DISPLAY HANDLING ....................................................................................58
DISPLAY INDICATIONS................................................................................................................ 58
PARAMETER MENU ................................................................................................................... 59
CHAPTER 15 MEMORY FUNCTION ON POWER FAILURE...................................................66
CHAPTER 16 MODBUS SIGNAL TYPES ..............................................................................67
CHAPTER 17 MODBUS SIGNALS.......................................................................................69
DISCRETE INPUTS...................................................................................................................... 69
COIL STATUS REGISTER............................................................................................................... 70
INPUT REGISTER ....................................................................................................................... 71
HOLDING REGISTER................................................................................................................... 72
CHAPTER 18 BACNET SIGNAL TYPES ................................................................................83
CHAPTER 19 BACNET SIGNALS ........................................................................................84
ANALOGUE INPUTS ................................................................................................................... 84
ANALOGUE VALUES................................................................................................................... 84
BINARY INPUTS ........................................................................................................................ 86
BINARY VALUES........................................................................................................................ 86
LOOP ..................................................................................................................................... 87
MULTISTATE INPUTS ................................................................................................................. 87
MULTISTATE VALUES................................................................................................................. 87
DEVICE................................................................................................................................... 88

Regio Midi manual Chapter 1 About the manual 5
Chapter 1 About the manual
This manual describes the Regio Midi range of controllers.
Terms
Term used in the manual:
FS Factory setting
More information
More information about Regio Midi can be found in:
•Regio tool©Manual –Manual of how to configure the controllers
The information is available for download from Regin’s website, www.regincontrols.com.
The document Regio in EXO Projects, containing information on how to use Regio in the
EXO system, can be downloaded from Regin’s FTP server. It is intended for our system
customers who need to share files with us, e.g. at technical support. Contact one of our sales
engineers to get access to the FTP server.

6 Chapter 2 Introduction to Regio Regio Midi manual
Chapter 2 Introduction to Regio
Regio zone controllers
Regio is a wide series of room controllers which handle everything from heating, cooling and
ventilation to lighting, humidity, CO2monitoring and blinds. Regio can be used for creating
everything from stand-alone systems for managing the functions in one room, to large,
integrated systems with a comprehensive SCADA-system.
Applications The Regio controllers have a discrete design and are easy to use. They are suitable in buildings
where you want optimal comfort and low energy consumption, for example offices, schools,
shopping centres, airports, hotels and hospitals.
Mounting The modular design with a separate bottomplate for wiring makes the whole Regio series easy
to install and commission. The controllers are mounted directly on the wall or on a wall box.

Regio Midi manual Chapter 2 Introduction to Regio 7
Regio Midi
Communication The controllers can be connected to a central SCADA-system via RS485 (EXOline, BACnet*
or Modbus) and configured for a particular application using the configuration tool Regio
tool©, which can be downloaded free of charge from Regin’s homepage
www.regincontrols.com. See the manual for Regio tool©for more information.
* BACnet is only available in models with display
Control modes The controllers can be configured for different control modes/control sequences:
•Heating
•Heating or cooling via the change-over function
•Heating/Heating
•Heating/Cooling
•Heating/ Cooling with VAV-control and forced supply air function
•Heating/Cooling with VAV-control
•Cooling
•Cooling/Cooling
•Heating/Cooling/VAV (only available in …3-models, except C3DFOC)
•Heating/Heating or Cooling via change-over (only available in …F-models)
•Change-over with VAV- function
Application examples

8 Chapter 3 Models Regio Midi manual
Chapter 3 Models
There are 12 different Midi room controllers. They can be divided according to type of control
in basic models, models for fan control and models for three-point control.
Model overview
RC… Basic models control analogue actuators, thermal actuators or On/Off actuators with spring
return.
RCC… Basic models with built-in CO2sensor. The units control analogue actuators, thermal actuators
or On/Off actuators with spring return.
…-C-models Models with communication. Communication via EXOline, Modbus or BACnet. Note that
BACnet communication only is available for models with display.
…D-models Models with display.
…F-models Like basic models, models for fan control (…F-models) control analogue, thermal and spring
return actuators. With the exception of RC-C3DFOC, they also have a button/fan switch and
three digital outputs for control of a three-speed fan (fan coil, etc.). RC-C3DFOC has EC fan
control on analogue output UO3.
…H-models Models with hidden setpoint
…O-models Models with occupancy button
…T-models Models for three-point control (…T-models) have four digital outputs for control of two three-
point actuators.
…C-models C at the end. Models with input for external CO2sensor.
…3-models The …3-models have an additional output for control of either an On/Off damper, analogue
forced ventilation damper, an analogue EC-fan or an analogue third damper.
Models
Display
Occupancy button
Fan control
3-point control
Setpoint knob
Hidden setpoint
EC fan control (AO) follow cooling/heating
Control of a third sequence (damper)
Input for CO2sensor
CO2sensor (built in)
Basic models
without fan
control/three-
point control
(…3-models)
RC-C3H
●
●
●
RC-C3
●
●
●
RC-C3O
●
●
●
●
RC-C3DOC
●
●
●
●
●
RCC-C3DOCS
●
●
●
●
●
●
Models for fan
control
(…F-models)
RC-CF
●
●
RC-CFO
●
●
●
RC-CDFO
●
●
●
RC-C3DFOC
●
●
●
●
●
Models for
three-point
control (…T-
models)
RC-CTH
●
●
RC-CT
●
●
RC-CTO
●
●
●
RC-CDTO
●
●
●
Table 1. The Midi models and their functions

Regio Midi manual Chapter 3 Models 9
Design
RC-C3H, RC-CTH RC-C3, RC-CT
RC-C3O, RC-CTO RC-CDTO, RC-C3DOC, RCC-C3DOCS
RC-CF RC-CFO
RC-CDFO, RC-C3DFOC

10 Chapter 4 Technical data Regio Midi manual
Chapter 4 Technical data
Supply voltage......................................................................................18...30 V AC, 50...60 Hz
Internal consumption ........................................................................................................2.5 VA
Ambient temperature ...................................................................................................... 0...50°C
Ambient humidity..................................................................................................Max 90 % RH
Storage temperature....................................................................................................-20...+70°C
Terminal blocks .........................................................Lift type for cable cross-section 2.1 mm2
Protection class .....................................................................................................................IP20
Material casing............................................................................................... Polycarbonate, PC
Colour
Cover ......................................................................................................Polar white RAL9010
Bottom plate ..............................................................................................................Light gray
Weight .................................................................................................................................110 g
Dimensions
Models without setpoint knob ..........................................................................95 x 95 x 28 mm
Models with setpoint knob ...............................................................................95 x 95 x 31 mm
Communication
Type.................................RS485 (EXOline or Modbus with automatic detection or BACnet*)
Communication speed...................9600, 19200, 38400 bps (EXOline, Modbus and BACnet*)
......................................................................................................or 76800 bps (BACnet* only)
Functions as...................................................................................................................................
Modbus.....................................................................................................................RTU Slave
BACnet...........................................................................................................................MS/TP
Modbus........................................................8 bits, 1 or 2 stop bits. Odd, even (FS) or no parity
Galvanically isolated port .......................................................................................................No
* BACnet is only available in models with display
Memory
Non-volatile (EEPROM)......................................All settings and configurations are preserved
See also Chapter 15, Memory function on power failure.
Built-in temperature sensor
Type .................................................................................................. NTC, linearised, 15 kOhm
Measuring range .............................................................................................................0...50°C
Accuracy ......................................................................................................± 0.5°C at 15...30°C
Built-in CO2sensor
Temperature dependance ....5 ppm per °C or 5 % of the reading per °C (whichever is greater)
Long term stability ..................................... < 2 % of FS over life of a sensor (15 years typical)
Response time...................................................................< 3 min. for 90 % step change typical
Warm-up time..........................................< 2 min. (operational), 10 min. (maximum accuracy)
Measuring principle.............................................NDIR (Non-Dispersive Infrared Technology)
Measuring range CO2.............................................................................................0…5000 ppm
Accuracy.......................................................... 400…5000 ppm ± 25 ppm ± 3 % of the reading
Signal update......................................................................................................Every 5 seconds

Regio Midi manual Chapter 4 Technical data 11
Models with display
Display type.........................................................................LCD with background illumination
EMC emission and immunity standard
This product conforms to the requirements of the EMC Directive 2014/35/EU through product
standards EN 61000-6-1 and EN 61000-6-3.
RoHS
This product conforms to the Directive 2011/65/EU of the European Parliament and of the
Council.
Inputs
AI1...........................................................................PT1000-sensor, 0...50°C, accuracy ± 0.1°C
UI.....................................................................AI: PT1000-sensor, 0...100°C, accuracy ± 0.2°C
............................................................................................................................orAI2: 0…10 V
.......................................................................................................................or DI: see DI below
CI .................................................................................... Regin’s condensation sensor, KG-A/1
DI..................................................... Closing potential-free contact connected to +C in one end
Outputs
DO............................................................................................................... 24 V AC, max 0.5 A
UO.....................................................DO:24 V AC, max 2.0 A or AO:0...10 V DC, max 5 mA
+C, power output for DI only..............................24 V DC, max 10mA, short circuit protected
For more information about inputs and outputs, see the chapter Wiring.
Accessories for Regio Midi
External temperature sensors........................ TG-R5/PT1000,TG-UH/PT1000,TG-A1/PT1000
Occupancy detector .......................................................................................................... IR24-P
Relay module for -F-models..................................................................................................RB3
Change-over.........................................................................................................TG-A1/PT1000
Condensation sensor........................................................................................................KG-A/1
CO2transmitter ................................................................................................................ CO2RT
Service adapter for Regio Midi ................................................................................... RC-TEST
Connection plates...................................................................................................RC-CONN:10
The accessories are available from Regin. For more information, see the product sheets and
instructions for each product, search via www.regincontrols.com.

12 Chapter 5 Installation preparations Regio Midi manual
Chapter 5 Installation preparations
Different versions of terminals and pins
In the summer of 2008, a new terminal type was introduced in the Regio controllers. The old
terminal type is dark grey and intended for 1.3 mm pins. The new terminal type is light grey
and intended for 1.1 mm pins. Confusion between a new and old bottom plate may lead to
deficient contact. Therefore, it is important to use an old electronics unit together with an old
bottom plate and a new electronics unit together with a new bottom plate. From the end of
2017 the bottom plate will be white instead of grey.
Figures 1 and 2 show an example of the difference between the old and current terminal types
(the number of terminals depends on the Regio model).
Figure 1. Old terminal type (1.3 mm pins) Figure 2. Current terminal type (1.1 mm pins)
Using labels
On the back of the electronics cassette, there is a set of labels which makes it easier to install
large numbers of Midi controllers. By using the labels as carriers of information for the
installation engineer, much time will be saved and you can keep wiring errors at a minimum.
Figure 3. Label on the back of the controller
The three-piece label can be split and the parts can be fastened to the installation drawing and
the bottom plate of the controller. The label carries information on the communication address
etc., and has a note area where you can enter a reference number to the connection diagram.
The address on the sticker has a different meaning depending on what communication protocol
is used.
Model and address
Field for new address or reference to connection diagram
Field for room number

Regio Midi manual Chapter 5 Installation preparations 13
Example 1 If the address on the sticker is 191:183 the following addresses are valid for the different
communication protocols:
EXOline: PLA=191, ELA=183
Modbus: address=183
BACnet: device ID=191183 (low 4 figures=1183, high 3 figures=19), MS/TP MAC
address=83*
Example 2 If the address on the sticker is 10:001 the following addresses are valid for the different
communication protocols:
EXOline: PLA=10, ELA=1
Modbus: address=1
BACnet: device ID=10001 (low 4 figures=1, high 3 figures=1), MS/TP MAC address=1*
* BACnet is only available in models with display
Configuration
If you want to configure the unit, it is normally better to do this before sending the electronic
cassette to the installation site. The bottom plates with location and wiring information can be
sent separately in advance to the installation site for electric installation.
The controllers are normally configured using Regio tool©.
Models with a display can be configured via the parameter menu in the display, but the easiest
way to set parameters is via Regio tool©. See Configuration using Regio tool©below and the
chapter Display handling.
Models without a display have DIP switches for configuration. See the section DIP switches
below.
Configuration using Regio tool©
1. Download Regio tool© to your computerfrom www.regincontrols.com.
2. Connect the computer to the back of the Regio cassette with an E-cable-USB or
equivalent.. The E-cable-USB is connected to terminals 42(A) and 43(B). Use a 24 V AC
transformer for supply voltage of the Regio cassette on terminals 10 and 11.
3. Go to the Device manager on your computer and check which communication port that
the cable has been assigned.
4. Open Regio tool© on your computer.The passwords in Regio tool©for the various access
levels are 1111 (log in as administrator) and 3333 (log in as operator). For more
information, see the manual for Regio tool©.
5. Go to the Tools menu in Regio tool© and choose Communication Settings and the
Communication Channels window will open up. Check that the Default port is the same
as assigned on the computer, otherwise change the port name in Regio tool©.
6. Each controller has a unique PLA- and ELA-address on delivery. If the PLA:ELA address
is unknown, go to the Tools menu and choose Search For Controllers. This function will
search through all the possible addresses until the Regio unit is detected.
7. Set the controller address under the Configuration menu. The controller address should
be entered instead of the Regio tool©default address (254:30).
The computer and the Regio unit should now be in contact with each other.
8. Start setting parameters and functions for the Regio. See the manual for Regio tool©for
more information.

14 Chapter 5 Installation preparations Regio Midi manual
Setting of DIP switches (models without display)
Models without display have eight DIP switches (SW1-8) for setting basic functions. They are
found on the back of the electronics cassette.
Figure 4. DIP switches
SW1-2
Basic setpoint (°C)
SW1
SW2
20
OFF
OFF
22 (FS)
OFF
ON
24
ON
OFF
26
ON
ON
Table 3. Setting of basic heating setpoint with DIP switch SW1 and SW2
See also the chapter Setpoint calculation for setting of SW1-2.
SW3 Occupied is the pre-set operating mode, SW3: OFF (FS). If you want the pre-set operating
mode to be Stand-by, set SW3 in mode ON. For more information, see the chapter Operating
modes.
SW4-8 Follow the tables in the chapter Installation for setting SW4-8.
Calibration
Calibration of a measured room temperature should be done under stable conditions.
Troubleshooting
The Manual/Auto function in Regio tool© makes it possible to test outputs. The output itself is
not affected; only the software object that controls the output. This means that the built-in
safety functions will not be disregarded.
The controllers have different indications which can be used for troubleshooting. See the
section Indications.

Regio Midi manual Chapter 6 Installation 15
Chapter 6 Installation
Mounting
Place the controller in a location that has a temperature representative for the room. A suitable
location is approx. 1.6 m above floor level in a place with unobstructed air circulation. Remove
the frame by pressing the locking tab in the lower edge of the cover with a screwdriver. See
figure 5.
Next, gently lift the electronics cassette out, See figure 6. Be careful not to damage the
electronics.
Figure 5. Figure 6.
The bottom plate with terminals has several fixing hole combinations. Select suitable holes
and screw the bottom plate onto the wall or connection box, so that the arrows on the bottom
plate point upwards. Do not tighten the screws too hard!
With surface-mounted cabling, break out suitable holes from the marks in the plastic.
Wiring
All units that share the same transformer and communication loop must use the same
transformer-pole for G (terminal 10) and G0 (terminal 11). On the communication loop the A-
terminal (terminal 42) should only be connected to another A-terminal and the B-terminal
(terminal 43) to another B-terminal. Otherwise, the communication will not work.

16 Chapter 6 Installation Regio Midi manual
The communication cable must be a screened twisted pair cable. The shield must be connected
to G0 on one (and only one) Midi controller in each separate power supply loop with 24 V
AC. If the length of the loop exceeds 300 m, a repeater is required. See figure 7.
Figure 7.
The figure below shows the location of the terminals. The connection diagrams and tables on
the following pages show the wiring for basic models, the model for CO2control, the model
with built in CO2sensor, models for fan control and models for three-point control.
Figure 8. Examples of bottom plate with terminals
For detailed information on connection of a communication cable to the Midi-controllers, see
the manual Regio in EXO Projects.

Regio Midi manual Chapter 6 Installation 17
Measurement and testing during installation
In order to make measurements and test the inputs/outputs of a Regio room controller during
installation, Regin’s RC-TEST service adapter may be used.
Simply align the pins at the bottom of the RC-TEST with the terminals contained in the
controller’s socket and then plug the Regio electronics cassette into the terminals at the top of
the device. Testing takes place via a standard multimeter.

18 Chapter 6 Installation Regio Midi manual
Wiring for basic models with 3 universal outputs (RC-C3H, RC-C3,
RC-C3O)
Figure 9. Connection diagrams for basic models with 3 universal outputs
Terminal
Designation
Operation
10
G
Supply voltage 24 V AC
11
G0
Supply voltage 0 V
12-14
No function.
20
GDO
24 V AC out common for DO. Internally connected to terminal 10, G.
21
G0
0 V common for UO. Internally connected to terminal 11, G0.
22
UO3
For VAV control
alternatively
For forced ventilation. 24 V AC output, max. 2.0 A. 24 V actuator is
connected between terminal 22 and terminal 20, GDO.
alternatively
For 0…10 V DC damper control/EC-fan. The damper actuator/EC-fan
0…10 V control signal terminal is connected to terminal 22, 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
Lighting control On/Off
RDAB5-24

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.

20 Chapter 6 Installation Regio Midi manual
Terminal
Designation
Operation
33
DI2/CI
Regin’s condensation sensor, KG-A/1 (FS). The sensor is connected
between terminals 33 and 41, AGnd.
alternatively
Window contact (DI). A potential-free contact is connected between
terminals 33 and 40, +C. Closed contact indicates closed window.
alternatively
Run indication from e.g. an air handling unit. A potential-free contact is
connected between terminals 33 and 40, +C.
See Table 5, SW4.
40
+C
24 V DC out common for DI and UI (with digital function)
41
AGnd
Analogue ground, reference for AI and UI (with analogue function)
42
A
RS485-communication A
43
B
RS485-communication B
Table 4. I/O connection terminals for basic models with 3 analogue outputs
DIP switches (only models without display)
The ON-position is marked on the DIP switch.
ON
OFF
Comment
SW4
DI, window contact.
Closed contact indicates
closed window.
CI, Regin’s condensation
sensor, KG-A/1 (FS).
Function terminal 33,
DI2/CI.
SW5
Digital output for 24 V
AC thermal actuator.
Analogue output for
0...10 V DC valve
actuator (FS).
Function terminal 23,
UO1.
SW6
Digital output for 24 V
AC thermal actuator.
Analogue output for
0...10 V DC valve
actuator (FS).
Function terminal 24,
UO2.
SW7
External, PT1000-sensor.
Internal NTC-sensor
(FS).
Temperature sensor.
SW8
NO
NC (FS)
Function terminal 23,
UO1
Choosing NC (FS) gives direct action on output UO1, i.e. increasing signal
(longer pulses) on increasing control output. This setting is used when UO1 is
connected to a thermal actuator of type Regin RTAM-24 (NC). In the event of a
power cut the valve will close.
Choosing NO gives reverse action on output UO1, i.e. decreasing signal
(shorter pulses) on increasing control output. This setting is used when UO1 is
connected to a thermal actuator of type Regin RTAOM-24 (NO). In the event
of a power cut the valve will open.
Table 5. DIP switches SW4-SW8