Regin Optigo OP5U User manual

O P T I G O – R E A D Y - S T E A D Y - G O
©Copyright AB Regin, Sweden, 2012
Optigo OP5U Manual

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
Optigo is a registered trademark of AB Regin.
Some product names mentioned in this document are used for identification purposes only and may be the registered
trademarks of their respective companies.
October 2011
Document revision: 2012-02-21

Table of contents
Chapter 1 About this manual 5
More information 5
Chapter 2 Introduction to Optigo 6
Optigo controllers 6
Optigo OP5U 7
Chapter 3 Technical data 8
Chapter 4 Installation and wiring 10
Installation 10
Wiring 10
Supply voltage 10
Inputs and outputs 11
Chapter 5 Control modes 12
Control mode 1, Temperature control 13
Control mode 2, CO2control 15
Control mode 3, General control 16
Control mode 4, Pressure control 17
Control mode 5, Pressure control with outdoor
temperature compensation of the pressure setpoint. 18
Chapter 6 Display and encoder 19
The Basic level 19
The 10-second level 20
Display symbols 20
Chapter 7 Setpoint 21
Chapter 8 Configuration 22
Menus 1.0 – 5.0 22
Menu X.1 Output signals (Control mode 1)
Transmitter range (Control modes 2, 3, 4 and 5) 22
Menus X.2 Neutral zone (Control mode 1 and 3) 23
Menus X.3 P-band 24
Menus X.4 I-time 24
Menu 1.5 Damper minimum position (Control
mode 1 only) 24
Menu 5.9 Start point for outdoor compensation
(Control mode 5 only) 24
Menu 5.9 Maximum compensation (Control
mode 5 only) 25
Menus X.11 I/O 26
Menu OK 26
Storage of settings 26

Reset to factory setting 26
Chapter 9 Index 27

Optigo OP5U user manual Chapter 1 About this manual 5
Chapter 1 About this manual
This manual describes the controller Optigo OP5U. It is applicable to program revisions
from R19.
More information
More information on OP5U can be found in:
Optigo controllers – Sales brochure for Optigo controllers
Optigo product instruction
OP5U product sheet
The information can be downloaded from the Regin website, www.regin.se.

Optigo OP5U user manual Chapter 2 Introduction to Optigo 6
Chapter 2 Introduction to Optigo
Optigo controllers
Optigo is a range of pre-programmed, configurable controllers that can be set to handle
everything from temperature to CO2control or pressure control. Features also include a
general control usable for several different control modes, such as humidity control or other
applications. The controller is intended to be used in residential, commercial and light-
industrial locations.
OP5U and OP 10 The Optigo series comprises two different types, OP5U and OP10.
OP5U has 5 inputs/outputs and can be configured to control Temperature, CO2, Humidity or
Pressure. From revision 18, there is a new analogue input for connection of an external
PT1000 setpoint device for control mode 1 (Temperature control).
OP10 has 10 inputs/outputs and can be configured to control Temperature (ventilation
control with heating and cooling), Waterheated radiator-heating with outdoor temperature
dependent control-curve or Domestic hot water control. From revision 20, there is a new
analogue input for connection of an external PT1000 setpoint device for control modes 1-4.
OP10 als has a week-based scheduler. OP 10 is available in two versions, OP 10 with 24 V
AC supply voltage and OP 10-230 with 230 V AC supply voltage. For more information,
please refer to the separate Optigo OP10 manual.
Mounting Optigo is designed primarily for DIN-rail mounting but can also be screw-mounted to any
suitable surface. The controller is intended for stationary indoor use.

Optigo OP5U user manual Chapter 2 Introduction to Optigo 7
Optigo OP5U
Optigo OP5U is a pre-programmed, configurable controller. It has been designed with the
main intention of replacing a number of Regin’s Aqualine controllers.
All configuration and normal handling is done using the display and the knob on the front.
Optigo is designed primarily for DIN-rail mounting but can also be screw-mounted to any
suitable surface.
In- and Outputs Optigo OP5U has:
1 analogue input, PT1000
1 analogue input for an external setpoint device, PT1000 (from R18)
1 universal input, 0…10 V DC or digital
1 digital input
2 analogue outputs, 0…10 V DC
Control modes Optigo OP5U is pre-programmed with a choice of 5 different control modes:
Temperature control
CO2control
General control
Pressure control
Pressure control with outdoor-temperature dependent compensation

Optigo OP5U user manual Chapter 3 Technical data 8
Chapter 3 Technical data
Supply voltage ................................................................................ 24 V AC ±15%, 50...60 Hz
Power consumption ...........................................................................................................3 VA
Ambient temperature .................................................................................................... 0...50°C
Ambient humidity.................................................................................................Max 90% RH
Storage temperature................................................................................................... -20...70°C
Terminals......................... Disconnectable, so-called lift type for cable cross-section 2.5 mm2
Protection class................................................................................................................... IP20
Material casing ............................................................................................. Polycarbonate, PC
Colour
Cover ................................................................................................................................ Silver
Bottom part.................................................................................................................Dark gray
Weight ....................................................................................................... 215 g incl. terminals
Dimensions.........................................................122 x 120 x 64 mm (WxHxD incl. terminals)
LVD, Low Voltage Directive
This product conforms with the requirements of European LVD standard IEC EN 61010-1.
EMC emissions an immunity standard
This product conforms with the requirements of European EMC standards CENELEC EN
61000-6-1 and EN 61000-6-3 and carries the CE mark
Inputs
AI........................................................................................................... Resolution: 10 bit A/D
AI1..................... PT1000-sensor, range -20…+140°C, divided into three measuring ranges,
accuracy +/- 0.5°C
SPI ........................................................................... PT1000 setpoint device, range 0…40°C
AGND ...........................................Reference for AI and for UI when used as an analogue input
UI
AI................................................................. 0...10 V DC, accuracy +/- 0.15 % of full output
or DI ........................................................................................ Closing potential-free contact
UI+ .....................................................................Reference for UI when used as a digital input
DI................................................................................................ Closing potential-free contact
DI+ ..................................................................................................................Reference for DI
Output
AO1 .................................................................. 0…10 V DC; 8 bit D/A short-circuit protected
AO2 .................................................................. 0…10 V DC; 8 bit D/A short-circuit protected
Agnd ...................................................................................Signal neutral for analogue outputs
Other data
Display ................................................................ Numeric / graphic. Background illumination

Optigo OP5U user manual Chapter 3 Technical data 9
Settings
Range Factory setting
Setpoint
CO2
General (GEN)
Pressure (Pa)
Temperature ranges
0...100% of max set value on UI1
0...100% of max set value on UI1
0...100% of max set value on UI1
-20…+60°C
20…100°C
60…140°C
1000 ppm
20% RH
2500 Pa
21°C
55°C
95°C
10 V DC in on UI1
CO2
General
Pressure
0...9900 ppm
1...100%
100 Pa...2500 kPa
2000 ppm
100% RH
5000 Pa
Neutral zone 12.5% of max 1°C (control mode 1)
5% (control mode 3)
P-band
CO2
General (GEN)
Pressure (Pa)
0...100% of UI1
0...100% of UI1
0...300% of UI1
5% of UI1
5% of UI1
5% of UI1
I-time 0…990 s 10 s
Outdoor compensation start -20…+60°C 0°C
Pressure at -20°C outdoor temperature 0 Pa...2500 kPa 1000 Pa
Accessories
External temperature sensors...........................For example: TG-R5/PT1000, TG-KH/PT1000
Setpoint device ................................................... PT1000, e.g. TG-R4/PT1000 or TBI-PT1000
CO2-sensor ...................................................................................CO2RT, CO2RT-D, CO2DT
Humidity sensor (can be used for general control (3))... HRT, HRT250, HDT3200, HDT2200
Pressure sensor ..................................................... DMD, DTL-series, DTK-series, TTK-series
The accessories are available from Regin. For more detailed information, see product sheets
and instructions which are available at www.regin.se.

Optigo OP5U user manual Chapter 4 Installation and wiring 10
Chapter 4 Installation and wiring
Installation
Optigo must be mounted in a DIN-standard casing (minimum 7 modules) or in a cabinet,
either on a DIN-rail or, using the two screw-pockets provided, by being screwed to any
suitable flat surface in the cabinet. The controller can also be mounted in a cabinet door or
other control panel, using a suitable front-mounting kit.
Ambient temperature: 0…50°C.
Ambient humidity: max. 90 %RH, non-condensing.
Wiring
This section only describes general rules and technical limitations concerning the wiring.
In chapter 5 there are specific wiring diagrams for the different control modes. Choose the
one suitable for the application on hand.
It is important to make sure that the wiring is correctly done, in accordance with the
instructions given in this manual and in accordance with local legislation for this type of
installation.
Supply voltage
24 V AC ±15%, 50…60 Hz. 3 VA
If the Optigo OP5U and active sensors and actuators connected to it share transformer, it is
essential that the same transformer-pole is used as reference for all the equipment. Failure to
do so will prevent the equipment from functioning as intended and may also lead to damages.

Optigo OP5U user manual Chapter 4 Installation and wiring 11
Inputs and outputs
AGND
All AGND terminals are interconnected and also connected to G0.
Analogue input AI
The analogue inputs must refer to an AGND terminal. AI1 is for PT1000 temperature sensors
only. Temperature range: -20…+140°C. SPI is only intended for a PT1000 setpoint device,
the range is 0...40°C.
Note: For temperatures below -9.5°C, decimals will not be displayed. It is therefore
important to differentiate between, for example, -1.5 (minus one point five) and -15 (minus
fifteen).
Digital input DI
The digital input must refer to DI+ on terminal 41.
The digital input may only be wired to voltage-free contacts. Any external voltage applied to
a digital input may seriously damage the unit.
Universal input UI
The universal input can, depending on the choice of application, be made to act as either an
analogue input or as a digital input.
When used as an analogue input it is for 0...10 V DC input signals.
When the Universal input is used as an analogue input it must refer to the AGND terminal or
directly to G0.
When used as a digital input it must refer to UI+ on terminal 43. It may then only be wired to
voltage-free contacts.
Analogue outputs
Analogue outputs must refer to a AGND terminal or directly to G0.
If the Optigo OP5U and active sensors and actuators connected to it share transformer, it is
essential that the same transformer-pole is used as reference for all the equipment. Failure to
do so will prevent the equipment from functioning as intended and may also lead to damages.

Optigo OP5U user manual Chapter 5 Control modes 12
Chapter 5 Control modes
Optigo can be configured to any one of the following control modes.
1. Temperature control.
The temperature at the sensor is kept at the setpoint value by controlling the output signals
on AO1 and AO2. A single PI control loop is used.
Three different temperature ranges can be selected:
-20…+60, 20…100, 60…140°C
2. CO2control.
The CO2-value at the sensor is kept at the setpoint value by controlling the output signal on
AO1. A single PI control loop is used.
3. General control.
The actual value at the sensor is kept at the setpoint value by controlling the output signal on
AO1 and AO2. AO1 is used for positive, direct-acting control, AO2 for negative, reverse-
acting control. A single PI control loop is used.
4. Pressure control.
The pressure at the sensor is kept at the setpoint value by controlling the output signal on
AO1. The AO1 inverted signal is received from AO2. A single PI control loop is used.
5. Pressure control with outdoor compensation.
The pressure at the sensor is kept at the setpoint value by controlling the output signal on
AO1. The AO1 inverted signal is received from AO2. The setpoint is automatically adjusted
according to the outdoor temperature. A single PI control loop is used.

Optigo OP5U user manual Chapter 5 Control modes 13
Control mode 1, Temperature control
The analogue outputs can be configured to the following combinations:
AO1 /AO2
1. Heating / -
2. Cooling / -
3. Heating / Cooling
4. Heating / Heating
5. Cooling / Cooling
6. Heating / Damper
7. Cooling / Damper
8. Change-over/ - (Seasonal change-over between heating and cooling)
When an external setpoint device is used, the setpoint is received via the SPI input, which
has a resolution of 0…40°C.
In alternative 4, Heating-Heating AO2 will be activated first on increasing heat demand.
In alternative 5, Cooling-Cooling AO2 will be activated first on increasing cooling cemand.
In alternative 6, Heating-Damper, at temperatures above the setpoint the damper on AO2 will
be fully open. On increasing heating demand, the damper on AO2 will first close to the set
minimum value before the heating output on AO1 starts to increase.
In alternative 7, Cooling-Damper, at temperatures below the setpoint the damper on AO2
will be fully open. On increasing cooling demand, the damper on AO2 will first close to the
set minimum value before the cooling output on AO1 starts to increase.
Temperature control is available for three selectable temperature ranges:
Low range (1): -20…+60°C
(Default SP= 21°C, minSP= -18°C, maxSP= +60°C)
Mid range (2): 20°C…100°C
(Default SP= 55°C, minSP= 22°C, maxSP= 100°C)
High range (3): 60…140°C
(Default SP= 95°C, minSP= 62°C, maxSP= 140°C)
DI1, Start signal
Normal control will only be activated when this input is activated, closed. Active signal is
indicated by a fan-symbol in the display. When the start signal is deactivated the controller
will set the outputs to 0.
Note: This input must always be wired since it controls the starting and stopping of normal
control.

Optigo OP5U user manual Chapter 5 Control modes 14
Universal input UI1, change-over
The change-over function will make a seasonal change of the function of the output signal on
AO1. In summer the output will work as a cooling output and in winter as a heating output.
This is used in applications (fan-coil units) where the same piping is used to transport hot
water in the winter and chilled water in the summer.
The universal input UI1 is used for the change-over function in alternative 8. Wire the input
as a digital input using either a manual switch or a thermostat monitoring the supply water
temperature to open/close the input. Open contact will give heating control and closed
contact cooling control.
Damper
In applications with dampers it is often desirable to be able to set a minimum amount of fresh
air. In the output alternatives 6 and 7 it is possible to set a minimum limit value to the
damper output signal. The damper output will then not go lower than the set value during
normal operation. When DI1=0, however, the signal will go to zero.
In the output mode heating – damper the damper will be fully open for temperatures higher
than the setpoint. On increasing heat demand the damper will first close to the minimum
value before the heating output starts to increase.
In the output mode cooling – damper the damper will be fully open for temperatures lower
than the setpoint. On increasing cooling demand the damper will first close to the minimum
value before the cooling output starts to increase.
External setpoint
From revision 18, it is possible to use an external PT1000 setpoint device, e.g.
TG-R4/PT1000 or TBI-PT1000. The setpoint device is connected between terminal 52 SPI
and the reference for the analogue inputs, AGND. For more information on configuration and
setpoint reading, see chapters 7 and 8.
Wiring example: Heating / cooling with change-over function

Optigo OP5U user manual Chapter 5 Control modes 15
Control mode 2, CO2control
DP
/CO2CO2
The output signal will increase when the CO2-value rises above the setpoint value.
The CO2-sensor must have a 0...10 V DC output for example:
CO2RT, CO2RT-D Room sensors
CO2DT Duct sensor
The transmitter range cannot exceed 9900 ppm at 10 V DC output.
The output can be min./max. limited. The minimum value can be set between 0…99%, and
the maximum value between 1…100%. If the min./max. parameters are accidentally set to
overlap one another, the max. function will be disabled and the output will alternate between
the min. value and 100%.
DI1, Start signal
Normal control will only be activated when this input is activated, closed. When the start
signal is deactivated the controller will set the output to 0.
Note: This input must always be wired since it controls the starting and stopping of normal
control.
Wiring example: CO2-control using damper or frequency converter

Optigo OP5U user manual Chapter 5 Control modes 16
Control mode 3, General control 0…100%
Humidity control has been selected as an example:
The control mode consists of a general control in sequence. A neutral zone can be set
between AO1 and AO2.
The sensor must have an output signal of 0...10 V DC.
This control mode can be used for humidity control. If so, the following sensors are
recommended:
HRT, HRT250 or HRT350 Room humidity transmitters
HDT2200 or HDT3200 Duct transmitters
DI1, Start signal
Normal control will only be activated when this input is activated, closed. When the start
signal is deactivated the controller will set the outputs to 0.
Maximum Limiting, RH Max
When running humidification with the main sensor in the room it is sometimes desirable to
have some sort of maximum limiting on the humidity in the supply duct.
To create such a limiting function, place an on/off humidistat such as HMH in the supply air
duct and wire it into the start signal circuit on DI1. The humidistat should be normally
closed.
Opening of the contact when the humidity rises above the set maximum value will force the
humidity output to 0.
Wiring example: Combined humidification / dehumidification

Optigo OP5U user manual Chapter 5 Control modes 17
Control mode 4, Pressure control
ff
/GP
Fan
ff
/
GP
Pu m p
The output signal will increase when the pressure signal falls below the setpoint value.
The pressure transmitter must have an output signal of 0...10 V DC, for example:
DMD
DTL-series
DTK-series
TTK-series
Pressure ranges of up to 2500 kPa kan be set.
The AO1 inverted signal is received from AO2.
DI1, Start signal
Normal control will only be activated when this input is activated, closed. When the start
signal is deactivated the controller will set the output to 0.
Note: This input must always be wired since it controls the starting and stopping of normal
control.
Wiring example. Pressure control

Optigo OP5U user manual Chapter 5 Control modes 18
Control mode 5, Pressure control with outdoor temperature
compensation of the pressure setpoint.
ff
/
GP
GT
Fan
The output signal will increase when the pressure signal falls below the setpoint value.
The AO1 inverted signal is received from AO2.
The setpoint value follows a settable pressure-to-outdoor temperature relation.
The pressure transmitter must have an output signal of 0...10 V DC, for example:
DMD
DTL-series
DTK-series
TTK-series
Pressure ranges of up to 2500 kPa kan be set.
The temperature range for outdoor temperature will be set to the low range for this control
mode, -20…+60°C.
DI1, Start signal
Normal control will only be activated when this input is activated, closed. When the start
signal is deactivated the controller will set the output to 0.
Note: This input must always be wired since it controls the starting and stopping of normal
control.
Wiring example: Outdoor temperature compensated pressure control

Optigo OP5U user manual Chapter 6 Display and encoder 19
Chapter 6 Display and encoder
All setting and configuration is done using the display and encoder.
The menu information on the display is organised in a tree fashion. Using the encoder you
can move between menus, set values etc.
In any of the configuration menus, a click on the encoder will activate change mode. You
can then rotate the encoder button to move between choices or set values. A second click of
the button will accept the choice.
The menu system is divided into two levels: The Basic level and the 10-second level which
contains all the configuration menus.
The Basic level
The Basic level comprises three sets of menu displays, the Base Display, the I/O Displays
and the Setpoint Display.
Base Display
This is an example of the Base Display, the display that is normally shown when there is no
operator activity.
The upper line shows which control mode has been configured, in this case control mode 1,
Temperature control. The bottom line shows the actual value of the main input parameter.
There are bar-graphs showing the current output levels. In control mode 1 there are symbols
showing how the outputs have been configured (Heating, Cooling, Damper or Change-over).
I/O
When the Base Display is shown, by twisting the knob counter clockwise until the text I/O is
displayed and then clicking on it, you can gain access to a menu where you can look at the
values and states of all inputs and outputs.
To exit this menu again, click on the knob and then twist the knob clockwise and you will be
returned to the Base display.
Setpoint
When in the Base Display, a click on the encoder button gives direct access to the Setpoint
menu.
See chapter 7 Setpoint.

Optigo OP5U user manual Chapter 6 Display and encoder 20
Calculated setpoint
In control mode 5, Pressure control with outdoor compensation, the controller does not work
towards a fixed setpoint value. Instead, it works towards a calculated setpoint, which varies
with the outdoor temperature. The calculated setpoint is displayed by turning the knob
clockwise when in the Base Display.
The 10-second level
This level is reached from the Base Display by pressing and holding the encoder button for
10 seconds. The 10-second level holds all the configuration menus. See chapter 8
Configuration.
Note: The controller must display the Base Display when pressing the encoder knob to reach
the 10-second level.
Display symbols