OUMAN EH-105 User Manual
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OUMAN EH-105 User Manual

Air handling unit controller
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EH-105
Air handling
unit controller
Ouman EH-105 is an intelligent air handling unit
controller that is suitable for all kinds of applications.
The controller s diverse and innovative control
solutions are as easy to use as the other Ouman
controllers that have a reputation for user friendliness.
The controller makes it possible to maintain optimal
air handling in spite of changing conditions in the
room to be ventilated (temperature, CO2 content,
channel pressure, increase in humidity).
In addition to normal week/24 hour clock functions,
EH-105 has a yearly clock that makes it easy to
create air handling unit controls for certain times
of the year (e.g., summer holidays, sundays during
the week, etc.)
Alarms can be received and acknowledged, time
programs and settings can be adjusted and
measurement data can be read quickly via text
messages. A GSM modem must be connected to
the controller to be able to use a GSM.
Control sequences:
•
Dampers
•
HRU
•
Heating
•
Cooling
•
Fan control
Fan controls:
•
Contactor controlled AH units
•
AC converter controlled AH units
Remote control options:
•
EH-net
Web based user interface
•
GSM Control
Traditional text message use with all
GSM phones
•
Other remote control opitions
Possibility to join SCADA solutions using
Modbus or LON protocol by means of
adapter card (optional).
www.ouman.fi
User manual
net
EH-
Web-based remote control takes
place via EH-net server (optional
equipment).
GSM use requires that a GSM
modem (optional equipment) has
been connected to the controller.

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Summary of Contents for OUMAN EH-105

  • Page 1 (temperature, CO2 content, channel pressure, increase in humidity). In addition to normal week/24 hour clock functions, EH-105 has a yearly clock that makes it easy to create air handling unit controls for certain times of the year (e.g., summer holidays, sundays during the week, etc.)
  • Page 2 EH-105 FOR STARTERS Ouman EH-105 is a versatile air handling controller, suitable for control- ling many types of air handling units. The information appearing on your controller’s display varies in different situations depending on controller connections and selected functions. All the possible functions are outlined in this user guide.

  • Page 3: Table Of Contents

    Maintenance Principle of cascade control Cascade control system These pages contain AH controls directions for maintenance Dampers persons authorized by Ouman. Access to the regulator’s maintenance Heating mode is prevented by a Cooling maintenance mode. 24VAC controls NTC measurements Transmitter measurements...

  • Page 4: Controllers's Basic Display

    EH-105 EH-105 CONTROLLER'S BASIC DISPLAY Room controlled Supply controlled Exhaust controlled Scrolling header (page 46) AH units AH units AH units Automaattiohj Automaattiohj Automaattiohj Automaattiohj 1/1 Autom. AHU 100% Autom. Kindergarten SU05 AH 1/1 Autom. 1/1 Autom. Ulkol. °C Ulkol. °C Ulkol.

  • Page 5: Measurements

    EH-105 EH-105 MEASUREMENTS The controller can be connected to 18 different measurement data at the same time (6 NTC measurements, 5 transmitter measurements and 7 digital outputs) If a measurement is reserved for alarms or for a free temperature measurement, it can be labeled accordingly.
  • Page 6 EH-105 EH-105 Additional information about measurements 0... 100% Text on the display: Setting range : Measurement information: Other measurements and calculations: [Supply temp after HRU] - [Outdoor temp] HRU effic. Heat recovery efficiency (%) from the formula: [Exhaust temp] - [Outdoor temp] SF air Supply air flow volume, calculated value, see p.

  • Page 7: Ah Unit Control

    EH-105 AH UNIT CONTROL In this mode the air handling unit control mode is selected. Usually automatic AHU 1/1 Autom. control is used, whereas the air handling unit runs according to the controller's Room temp.21.2 °C clock program. The time program set into the controller's clock can be bypassed SupplyTemp20.4...

  • Page 8: Ah Output Control Priorities

    EH-105 AH output control priorities The AH unit may receive contradicting output controls at the same time. The controls are prioritised as listed below. The control that is listed higher is stronger than the control listed at a lower level.

  • Page 9: Settings

    Ajan asetus SETTINGS Browsing, making changes Ouman EH-105 has two different types of settings, user level and maintenance level settings. The user can change the user level settings shown here if AHU 1/1 Autom. necessary. Only a maintenance man authorised by Ouman can change the Room temp.21.2...
  • Page 10 EH-105 Ajan asetus Additional information about settings Text on the Setting Factory Attention! Explanation: display: range: settings: Supply air minimum temperature when the SuppMinCool 14°C 5.0...45.0°C outdoor temperature is above the ”Outd.inhibit” limit and ½ of the ”Heat/CoolHys” setting has been realized.

  • Page 11: Supply Air Information

    EH-105 SUPPLY AIR INFORMATION The supply air information states which factors form the supply air temperature determined by the controller at the time of inspection. With room/exhaust AHU 1/1 Autom. controlled control, the controller calculates the supply air temperature setting Room temp.21.2...
  • Page 12 EH-105 AH OUTPUT INFORMATION /CONNECTION INFORMATION AHU 1/1 Autom. Room temp.21.2 °C SupplyTemp20.4 °C AH OUTPUT INFORMATION Selection The AH output info display shows all the currently activated control commands. character is at the determining (strongest) factor. The numeral indicates the amount of the AH unit output control.

  • Page 13: Control Sequence Operating Modes

    EH-105 CONTROL SEQUENCE OPERATING MODES Operating modes for controls that are in use are selected in this mode. Each control sequence can be operated automatically or manually operated either mechanically or electrically. Each control sequence has factory set automatic control.

  • Page 14: Clock Functions

    EH-105 CLOCK FUNCTIONS Setting the time Clock function The Ouman EH-105 controller's clock registers summer time and standard time AHU 1/1 Autom. changes and leap years. The clock has a back-up in the event of short power Room temp.21.2 °C SupplyTemp20.4...
  • Page 15 EH-105 CLOCK FUNCTIONS Text on the display: Information about clock program: Browse/ location for additional programming: Week program Move the cursor to ”Week program”. Press . Press the button to browse the clock programs which have been made. If you want to make additional programs, move...

  • Page 16: A- Alarms

    EH-105 ALARMS EH-105 has very diverse alarm functions for special situations. The causes for the alarms depend on what functions have been taken into use. In the event of an Select alarm, the controller gives an alarm and a message appears on the display. The Measurements alarm relay contact also closes.

  • Page 17: B -Alarms

    B- ALARMS B- ALARMS Alarm type: Alarm name : Explanation: R1 R2 Deviation alarm Supply temp., exhaust temp. or room temp. deviates too Supply temp. much from the temperature indicated by the controller. Exhaust temp. Alarm limits and duration of deviations are given in the Room temp.
  • Page 18 B- ALARMS B- ALARMS Alarm type: R1 R2 Alarm name : Explanation: Supply filter PDS Filter alarm Filter dirty. Clean or change filter (PDS= pressure difference switch information) Exhaust filt PDS Supply filter PDE Filter dirty. Clean or change filter. Exhaust filt PDE (PDE= pressure difference emitter information) Alarm indicating HRU's glycol circuit positive or negative...

  • Page 19: Language

    EH-105 EH-105 LANGUAGE/KIELI The Ouman EH-105 controller is in many languages. The languages that are available depend on the program version. The controller's language can be changed as follows: OPERATING MODES: AHU 1/1 Autom. Room temp.21.2 °C Press until the display no longer changes.

  • Page 20: Type Information

    000ijPZabcd0 EH-105 CONFIGURATION PROGRAM The Ouman EH-105 controller initialization can be done using a computer-based configuration program. After the selections have been made, the program forms an operation code, which can be transferred via the serial bus directly into the controller. The selections can be saved by name and easily copied into another similar place.

  • Page 21: Modem Initialization

    EH-105 EH-105 MODEM INITIALIZATION AHU 1/1 Autom. Room temp.21.2 °C SupplyTemp20.4 °C Selection “Initializ modem” appears on the menu only if the modem has been taken into use (stripconnector B-D pins are connected). Select Measurements AHU oper.contr. Press to send initializing commands to the modem. The controller gives an error Settings message if the modem did not become initialized.

  • Page 22: Gsm-Functions

    EH-105 GSM FUNCTIONS; text messages EH-105 can be connected to a GSM modem, making it possible to communicate with a GSM phone via text messages. (initialization p. 49). The functions performed using a graphic user interface (see p. 21) can also be performed using traditional text messages.

  • Page 23: Entering The Maintenance Mode

    EH-105 ENTERING THE MAINTENANCE MODE Access to the Ouman EH-105 is prevented by user rights. Only those persons who have a maintenance code have access to the maintenance mode. There are typical tuning values and settings in the maintenance mode which the maintenance person needs in conjunction with installation.

  • Page 24: General Settings

    EH-105 EH-105 GENERAL SETTINGS Ouman-105 has two types of settings: Select a) user level settings that the user can adjust (p. 9) Mainten.mode b) maintenance mode settings that the maintenance person may have to adjust GeneralSettings Original factory settings are restored in special maintenance (p. 46) General settings and control settings are in the maintenance level.
  • Page 25 EH-105 EH-105 Additional information about general settings Text on the Factory- Setting Explanation: display: setting: range: 5 ... 50°C NightVentStop 12 °C Outdoor temp. limit below which night ventilation and night cooling are inhibited. (See p. 38, 39) NightHeatHys 0 °C 0.5 ...

  • Page 26: Principle Of Cascade Control

    EH-105 EH-105 PRINCIPLE OF CASCADE CONTROL In blast air temperature control, an attempt is usually made to utilise ”free energy” Select as much as possible. The diagrams below illustrate a typical order for controls Mainten.mode in a heating situation (upper diagram) and cooling situation (lower diagram). The CascadeCtrlSyst cascade control system can be changed, see the following page.

  • Page 27: Cascade Control System

    EH-105 EH-105 CASCADE CONTROL SYSTEM CascadeCtrlSyst The order in which heating and dampers function is selected in the cascade DamperMin-Heat control system when there is a need to increase the room temperature. Heat-DamperMin DamperMin-Heat: When the temperature must be increased, the...

  • Page 28: Ah Controls

    EH-105 AH CONTROLS Operating mode Select Mainten.mode AHU controls Hint ! Hint ! AHU controls Operating mode Operation mode Press the group select button to AHU temp.ctrl Settings AHU fan control browse other operating modes that have Tuning values AHU output ctrl been selected.
  • Page 29 EH-105 EH-105 AH CONTROLS Operating mode AHU output ctrl AH output control is Outdoor temp. CascadeC/OutpLim included in cascade Cascade ctrl Not in use control. CO2 content In use Phase 1 Phase 2 When heating is at Room temp. open...
  • Page 30 EH-105 EH-105 AH CONTROLS Settings AHU controls Select Operation mode Mainten.mode Settings AHU controls Tuning values Actuator AH FAN CONTROL SETTINGS Max settings Settings AH output at different outdoor temperatures SF control Max settings-> AH output SF pressure Min settings->...
  • Page 31 EH-105 EH-105 AH CONTROLS Settings AHU at maximum AHU at minimum CO2/max 1000 CO2/min The controller can enhance air handling by changing the AH HeatBoost CO2postRun output according to the CO2 content, room temperature, Cool Boost Humid./min exhaust temperature,room humidity or remote setting Humid./max...
  • Page 32 Cannot be selected in AC freq. converter controlled units Contradiction alarms for SF and EF fans ContradictAlrm EH-105 gives a contradiction alarm in the following situations: Running information connected to On/Off inputs is not received, even though the controller drives the AH unit to the output in question.

  • Page 33: Dampers

    DAMPERS: EH-105 Operating mode Select The dampers are taken into use here and the operation mode is defined. Mainten.mode Damper Press the group select button to go from one control sequence to the next. Dampers Operation mode Settings Tuning values...
  • Page 34 0 … 100% Fresh air damper minimum position during cooling, if the outdoor air is warmer that the room air or exhaust air (0% = damper is shut). DAMPER TUNING VALUES EH-105 dampers have PID control Factory setting: Range: Tuningvalues P-area °C...
  • Page 35 EH-105 Operating mode Select The HRU is taken into use here and the operating modes are defined. EH-105 can Mainten.mode control different types (rotating, plate and glycol) of heat recovery units (HRU's). Heat recovery function requires that frost protection function...
  • Page 36 5°C colder than the exhaust temperature and if the HRU is not at maximum output the efficiency alarm function is not in use. HRU TUNING VALUES EH-105 HRU has PID control. Other HRU tuning is done only in exceptional cases. Tuning values...

  • Page 37: Heating

    0... 500s off and the fans continue to run for the electric heater post-ventilation time. 200s HEATING TUNING VALUES EH-105 heating has PID control. The hysteresis can be set if an electric heater is in use. Tuning values P-area °C...

  • Page 38: Cooling

    EH-105 COOLING: Operating mode Select Cooling can be realized with the HRU and damper reverse summer function, night Mainten.mode ventilation and mechanical cooling. On /Off type control (magnetic valves) or Cooling continuous control (glycol cooling) can be used with mechanical cooling. The cooling unit running permit can be obtained from strip connectors 42, 43 or 51 (activated in actuator selection, p.
  • Page 39 Settings EH-105 EH-105 COOLING Tuning values Cooling is in use when it has been taken into use in the operating mode Select Mainten.mode menu and its operating mode has been specified (see p. 38). Dropping the room Cooling temperature by other means than mechanical cooling; illustrated on page 33 and 38.
  • Page 40 Tuning values EH-105 EH-105 COOLING: Actuator selection Tuning Factory Range: Explanation: value: setting: Room controlled cooling, continuous control: Room comp.R. 3°C 1 ... 8°C During continuous control the supply air temperature is reduced from the room temperature during cooling by an amount equal to room compensation for each degree of temperature exceeding the set value.

  • Page 41: Vac Controls

    EH-105 EH-105 24 VAC CONTROLS EH-105 has three 24 VAC control outputs. This display shows if they are free or Select for what use they have been reserved. They are taken into use in this menu Mainten.mode according to the directions given below.

  • Page 42: Ntc Measurements

    EH-105 EH-105 NTC- MEASUREMENTS NTC- Measurements 1-6 are NTC measurements that are connected to Ouman Select temperature sensors. These measurement channels can also be used to receive Mainten.mode On/Off information (see On/Off input selections p. 44). NTC measurements 2 - 6 Measurem.

  • Page 43: Transmitter Measurements

    EH-105 TRANSMITTER MEASUREMENTS Measurements 7-11 are 0…10V transmitter measurements. They can be connected to pressure transmitters, CO2 content transmitters, humidity Select Mainten.mode transmitters, and air flow transmitters. These measurement channels can also be Measurem. 7-11 used to receive On/Off information (see On/Off input selections p. 44)

  • Page 44: On/Off Inputs

    EH-105 EH-105 ON/OFF INPUTS EH-105 has seven digital inputs that can receive contact information about AH Select unit operation. (e.g., information about what state the AH unit is in when it is Mainten.mode running or On/Off alarm information). Contact information can also be connected ON/OFF inputs to NTC and transmitter measurement channels that have not been connected;...
  • Page 45 EH-105 EH-105 ADDITIONAL INFORMATON ABOUT ON/OFF INPUTS Explanation: On the display: AH unit control by switches or press buttons (closing contact) connected to the controller: 1/1 (1/2) PowerSw The AH unit is driven to the desired output by external switches or press buttons MIN (MAX)PowerSw (bypasses the clock program).
  • Page 46 EH-105 EH-105 ADDITIONAL INFORMATON ABOUT ON/OFF INPUTS Explanation: On the display: Contact information from the heating pump's temperature relay. When the contact closes, Pump T Rela the controller gives an alarm and the AH unit shuts down. Pump T Rela Contact information from the HRU pump's temperature relay.

  • Page 47: Restoring Settings

    Clears the alarm buffers and alarm history LOCKING CODE EH-105 can be set into a mode here that prevents the user from changing settings but allows him to move in the menu and scan settings.Taking the locking code into use: Select Mainten.mode...

  • Page 48: Bus Measurements

    EH-105 BUS MEASUREMENT/ LON INITIALIZATION Ouman EH-105 has an LON-100 adapter card (optional equipment) which makes Select Mainten.mode it possible to connect the controller to an LON field bus, and an EH-485 and a Special mainten MODBUS-100 adapter card which changes the EH-105 controller's series traffic Bus measurement bus to be compatible with the RS-485 field bus.
  • Page 49 EH-105 BUS CONNECTIONS/ LON INITIALIZATION The Ouman EH-105 controller can be connected to the MODBUS, RS-485 or LON bus. When the EH-203 controller is connected to the bus, a (Modbus-200, EH-485, or LON-200 card) bus adapter card (optional equipment) is installed. Detailed instructions for installing and initializing the bus adapter card are provided.

  • Page 50: Text Message Connection Via The Bus

    RS-485 field bus through the master device, EH-686. An EH-485 bus adapter card must be installed in the controller so that the EH-105 controller can be connected to the RS-485 field bus. (see installation and initialization guide in the instructions that come with the EH- 485 card).
  • Page 51 The power is on but the modem is not ready to use. Inspect the following: 1. EH-105 has the same PIN code as the GSM modem's SIM card PIN code. 2. Perform the start-up function. To start-up, move to Start function. Press OK. Exit with LED blinks slowly: ESC without changing settings.

  • Page 52: Using The Browser

    EH-net is connected directly to a public IP address, we recommend using a firewall device between the EH-net and the network. By using the browser it is possible to communicate with the EH-105 controller from any pc. Information from the controller can be read and changed from the pc. If desired, entry to certain functions can be limited or certain things can be hidden that can be security risks or which are not relevant.
  • Page 53 EH-105 EH-105 INSTALLATION AND MAINTENANCE GUIDE EH-105 is fastened to its mounting base with three screws (two Changing the fuse: mounting points under the cover in the connection space and one in the installation bracket. Cables can be brought for the controller from above (standard factory delivery) or from below.
  • Page 54 EH-105 EH-105 GENERAL CONNECTION GUIDE Modem connection Modem Field device connecting cable DATAJAMAK EIA-232 RX Jumper 2x(2+1)x0,24 wire EIA-232 GND Interface If the modem is connected to the RS-485 bus, see Connection EIA-232 TX in the instructions that come with the RS-485 card.
  • Page 55 EH-105 EH-105 example 1 CONNECTION GUIDE AC FREQ. CONVERTER CONTROLLED AHU WITH CONTRADICTION ALARMS Modem connection Modem Field device connecting cable DATAJAMAK EIA-232 RX Jumper 2x(2+1)x0,24 wire Interface EIA-232 GND If the modem is connected to the RS-485 bus, see Connection EIA-232 TX in the instructions that come with the RS-485 card.
  • Page 56 EH-105 EH-105 example 2 CONNECTION GUIDE CONTACTOR CONTROLLED AH UNIT WITH CONTRADICTION ALARMS Modem connection Modem Field device connecting cable DATAJAMAK EIA-232 RX Jumper 2x(2+1)x0,24 wire EIA-232 GND interface If the modem is connected to the RS-485 bus, see Connection EIA-232 TX in the instructions that come with the RS-485 card.
  • Page 57 EH-105 EH-105 example 3 CONNECTION GUIDE CONTACTOR CONTROLLED AH UNIT WITH THERMAL PROTECTION ALARMS Modem connection Field device Modem connecting DATAJAMAK cable EIA-232 RX Jumper 2x(2+1)x0,24 EIA-232 GND wire interface EIA-232 TX If the modem is connected to the RS-485 bus, see Connection in the instructions that come with the RS-485 card.
  • Page 58 EH-105 EH-105 OPTIONAL EQUIPMENT LON-100 LON -100 is an adapter card which changes the EH-105 series controller's serial communication bus so it is compatible with the LON field bus. An installation guide comes with the LON-100 adapter card. EH-485 Ouman has an EH-485 bus adapter card available as optional equipment which makes the EH-105 serial interface compatible with the RS-485 field bus.

  • Page 59: User Panel 2

    EH-105 EH-105 INDEX A-alarms 16 General alarm 46 Regulator control 41 Glycol pressure 18, 45 AC freq. converter contr. fans 4,28,44 Remote setting potentiometer 5, 42 Group select button 2 Actuator selection 37 Resistor value table 6 Adapter cable 51...
  • Page 60 EH-105 TECHNICAL INFORMATION Operat. voltage 230 VAC, 50Hz, 0.2A 230 VAC control inputs: 1 running information 24 VAC output 24 VAC control outputs: 3 pieces loading capacity: together 25 VA Voltage control outputs: 6 pieces 0 - 10 or 2 - 10 VDC...

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