Subscribe to Our Youtube Channel
Related Manuals for OJ Electronics AHC-3000
Summary of Contents for OJ Electronics AHC-3000
- Page 1 INSTRUCTIONS Commissioning guide for AHC-3000 AHC-3000 CONTROL SYSTEM FOR COMPACT AIR HANDLING UNITS...
-
Page 2: Table Of Contents
INSTRUCTIONS Commissioning guide for AHC-3000 Contents Introduction ..............4 Screen saving mode . - Page 3 INSTRUCTIONS Commissioning guide for AHC-3000 Contents Control settings ..............33 19.1 Fan control mode: Constant pressure .
-
Page 4: Introduction
Therefore, all you need to do is supply the AHC-3000 AHU with power. For the system integrator The OJ AHC-3000 is one of the most flexible systems on the market in terms of BMS system integration. Standard features worth mentioning: The Modbus RTU & TCP/IP is built-in. The associated protocols can be downloaded from www.ojelectronics.com. -
Page 5: Screen Saving Mode
INSTRUCTIONS Commissioning guide for AHC-3000 Screen-saver mode If the HMI-35 display hasn't been touched for 60 seconds, the display will go into screen saver mode. The display will show the current status of the air handling unit: see fig. 2.1... -
Page 6: Password Protected Settings
INSTRUCTIONS Commissioning guide for AHC-3000 Password-protected settings Some menus are password protected. Settings like temperature setpoint, language, time and other similar user settings are not password protected. Other installer and service menus may be protected by either a “Service password” or an “Installer/ Service password”... -
Page 7: Setting Current Time And Date
Setting the current time and date The local time and date must be set during the commissioning of the AHC-3000. Without power, the AHC-3000's current time and date will be supported from a backup battery for at least 12 months. -
Page 8: Selecting System Measuring Units (°C, °F, M3/H, L/S, Cfm)
Your selection is automatically saved in the controller after selection. Fire settings The AHC-3000 supports two different kinds of fire alarm: Fire alarm: detected from a fire thermostat or an automatic fire detection system (AFD). Internal fire alarm: detected from the internal supply air and extract air temperature sensors. -
Page 9: Fire Alarm
INSTRUCTIONS Commissioning guide for AHC-3000 Fire alarm This fire alarm is detected on a digital fire input on the AHC-3000 controller. The signal may possibly come from an automatic fire detection system (AFD) or an external fire thermostat placed in the duct system. -
Page 10: Update Sw And Read Out Current Sw Version
To read out the SW version for the AHC-3000 and the connected HMI-35T Updating the SW To update the SW in the AHC-3000 and in the HMI-35T hand-held terminal, the updating SW must be downloaded to the AHC-3000 controller using: •... -
Page 11: Room Info Readout
INSTRUCTIONS Commissioning guide for AHC-3000 Room info readout To read out the SW version for AHC-3000 and the connected HMI-35T A simple status overview for the AHU system can be displayed by selecting _ Depending on the configuration, the current status and values will be displayed: √... -
Page 12: Communication Set-Up
• a BMS system via Modbus TCP/IP and Modbus RTU (see 13.1) • Directly connected to a computer via a LAN cable (RJ45) (see 13.2) The AHC-3000 can also be connected to the OJ Cloud via the internet or a mobile app via Bluetooth 13.1 Modbus TCP/IP –... -
Page 13: Modbus Tcp/Ip - Static Ip
13.2 Modbus TCP/IP – Static IP If the AHC-3000 is connected to a stand-alone network without a DHCP server, or via a normal patch cable to a local computer, select “Static IP” under the menu “Static/Dynamic IP”. After selecting “Static IP”, specify the IP-address and the Netmask. Normally it is not necessary to specify the Gateway, Primary and Secondary DNS. -
Page 14: Bluetooth
The Bluetooth must be activated before use. After activating Bluetooth in the AHC-3000-B, you may start a scan from your Bluetooth device (smartphone, tablet or similar) The AHC-3000-B will now appear on the list of Bluetooth devices. Select “Connect” on your Bluetooth device. 13.6... -
Page 15: Configuring The Application
Device ID √ Device ID on the AHC-3000 controller Terms & conditions √ You must accept the Terms & Conditions before the AHC-3000 will connect to the OJ Air Cloud ® √ Terms & Conditions are available on https://oj.hvac-cloud.com Note! After accepting the Terms & Conditions, the AHC-3000 will start uploading data to OJ Air Cloud ®... -
Page 16: Configuring The Temperature Sensors
INSTRUCTIONS Commissioning guide for AHC-3000 Fig. 14.2 Fig. 14.3 Fig. 14.4 Fig. 14.5 Fig. 14.6 Fig. 14.7 Rotor Counter flow Cross flow Mixing box Supply air Extract air 14.2 Configuring the temperature sensors Here, select the temperature sensors in the AHU from among these options: •... -
Page 17: Configuring The Filters
INSTRUCTIONS Commissioning guide for AHC-3000 14.3 Configuring the filters Here. select the filter monitoring from among these options: It is possible to configure up to 2 filters in an AHU: • Outdoor air filter • Extract air filter Filter alarm Filter alarm function can be selected as: •... -
Page 18: Configuring The Pressure Transmitters For Flow And Deicing
INSTRUCTIONS Commissioning guide for AHC-3000 14.4 Auto-configured pressure transmitters for flow and deicing Here you see the autoconfigured flow & deicing pressure transmitters: • Supply flow • Exhaust flow • Pressure de-icing These 3 pressure transmitters are all auto mounted via Modbus communication and this window is a visualisation only. -
Page 19: Configuring The Visualisation Of The Current Power
INSTRUCTIONS Commissioning guide for AHC-3000 14.5 Autoconfigured drives and visualisation of the current power Here you see the autoconfigured drives which can display the current power consumption. • Rotor • Supply fan • Exhaust fan These three power components are all auto-mounted via modbus communication and this window is only a visualisation of the connected power components. -
Page 20: Configuring The Fan Alarm
INSTRUCTIONS Commissioning guide for AHC-3000 14.6 Configuring the fan alarm Here, select the type of fan detection from among these options: • Tacho • Digital input The fan alarm can be configured as “Tacho” or as “Digital input” The Tacho alarm is detected on a digital input from a pulsating Tacho signal from the motor. -
Page 21: Configuring The Heating
INSTRUCTIONS Commissioning guide for AHC-3000 14.7 Configuring the heating Here, you now select the after heating coil from among these possibilities: • No after heating coil • Water heating coil* • Electro heating coil *= factory setting Note The AHU must be in operational mode “Service stop” _ from main screen menu, in order to activate the new updated software. -
Page 22: Configuring The Cooling
INSTRUCTIONS Commissioning guide for AHC-3000 14.8 Configuring the cooling Here you now select the after cooling coil from among these possibilities: • No after cooling* • Water heating coil *= factory setting Note The AHU must be in the operational mode “Service stop” _ from main screen menu in order to activate the new updated software. -
Page 23: Configuring The Supply Air: Single-Duct Supply Air System
INSTRUCTIONS Commissioning guide for AHC-3000 14.9 Configuring the supply air: single-duct supply air system Supply air AHU If the AHU is a single fan/single duct supply air unit, it is possible to configure a recirculation unit using a mixing damper. -
Page 24: Configuring The Ahu Field Components
INSTRUCTIONS Commissioning guide for AHC-3000 Autoconfiguring the AHU field components This shows the autoconfigured Air Handling Unit field options • Duct pressure • Filter pressure • Room temperature • Timer button • Remote setpoint • CO2 control • VOC control •... -
Page 25: Auto Configuration
INSTRUCTIONS Commissioning guide for AHC-3000 Auto configuration Auto configuration is a function in the AHC-3000 system that helps the commissioning technician configure the application. The “Auto configuration” function scans the system and automatically detect all Modbus components in the AHU connected to ports “A”, “B1” & “B2”. -
Page 26: Digital Input Configuration
INSTRUCTIONS Commissioning guide for AHC-3000 Digital input configuration Configuring the digital inputs is made here. Digital inputs can be used for pre-defined functions according to the application. The digital inputs can be used for: Supply fan alarm • Fan alarms can be configured as “Tacho” or a digital Note! The alarm signal. -
Page 27: Commissioning
INSTRUCTIONS Commissioning guide for AHC-3000 Commissioning From this window, it is possible to commission and test the field components: • Read out and override the status values of: Supply air fan – Override not possible in operational mode “Stop” Extract air fan – Override not possible in operational mode “Stop”... -
Page 28: Commissioning The Heat Recovery
INSTRUCTIONS Commissioning guide for AHC-3000 18.2 Commissioning the heat recovery Heat recovery status/readouts: Settings: Override On/Off Status: Current heat recovery Current 0–10V output heat recovery Current supply air temperature Heat recovery override: Activate the “Override function” by pushing the switch to the right. -
Page 29: Commissioning The Heater
INSTRUCTIONS Commissioning guide for AHC-3000 18.3 Commissioning the heater Heat recovery status/readouts: Settings: Override On/Off Status: Current heating % Current 0-10V output, heating coil Current status of the heating relay Current supply air temp. (°C/°F) Heater override: Activate the “Override function” by pushing the switch to the right. -
Page 30: Commissioning The Cooler
INSTRUCTIONS Commissioning guide for AHC-3000 18.4 Commissioning the cooler Cooler status/readouts: Settings: Override On/Off Status: Current cooling % Current 0-10V output cooling coil Current supply air temp. (°C/°F) Cooler override: Activate the “Override function” by pushing the switch to the right. -
Page 31: Commissioning The Temperature Sensors
• Set the sensor correction (-3.5°C to +3.5°C) Sensor correction is an option for adjusting the temperature displayed on the sensor in the AHC-3000 system so that it will show the same value as the temperature measured by an external thermometer. -
Page 32: Commissioning The Co2 Sensors
INSTRUCTIONS Commissioning guide for AHC-3000 18.6 Commissioning the CO2 sensors CO2 sensors • Read out the current value on the connected CO2 sensor. • Current input on the 0-10V analogue input 18.7 Commissioning the humidity sensors Extract-air humidity sensor • Read out the current value on the connected humidity sensor... -
Page 33: Control Settings
INSTRUCTIONS Commissioning guide for AHC-3000 Control settings 19.1 Fan control mode: Constant pressure • Select the fan control mode: Constant pressure – the procedure is the same for the supply and exhaust air fans. √ Low speed (Pressure setpoint) √ Medium speed (Pressure setpoint) √... -
Page 34: Fan Control Mode: Constant Air Flow
INSTRUCTIONS Commissioning guide for AHC-3000 19.2 Fan control mode: Constant air flow • Select the fan control mode: Constant air flow – the procedure is the same for the supply and exhaust air fans. • Set the control parameters for the selected control mode √... -
Page 35: Fan Control Mode: Extract Air Slave
INSTRUCTIONS Commissioning guide for AHC-3000 19.3 Fan control mode: Extract air slave Extract slave requires measuring the flow of both the supply and exhaust air. It is not possible to select the supply air slave and exhaust air slave together. -
Page 36: Fan Control Mode: Supply Air Slave
INSTRUCTIONS Commissioning guide for AHC-3000 19.4 Fan control mode: Supply air slave Supply air slave requires measuring the flow of both the supply and exhaust air. It is not possible to select supply air slave and exhaust air slave together. -
Page 37: Fan Control Mode: Constant Motor Speed
INSTRUCTIONS Commissioning guide for AHC-3000 19.5 Fan control mode: Constant motor speed % • Select the fan control mode: Constant motor speed - procedure is the same for supply and extract air fan. - in this sample, only supply air fan is shown. -
Page 38: Air-Control Loop Settings
INSTRUCTIONS Commissioning guide for AHC-3000 19.6 Air-control loop settings • If the airflow oscillates, it may be necessary to change the parameter settings in the fan-speed control loop. • The available parameters are the P-band and the I-time. • If the airflow/pressure oscillates, it helps to increase the P-band and the I-time •... -
Page 39: Zero Calibrating The Pressure Transmitters
INSTRUCTIONS Commissioning guide for AHC-3000 19.8 Zero-calibrating the pressure transmitters To eliminate the deviation of zero point measurement when the pressure transmitters are without pressure, it is possible here to start the procedure for the 0-calibration of all the system pressure transmitters. -
Page 40: Temperature Control Settings
INSTRUCTIONS Commissioning guide for AHC-3000 Temperature control settings The temperature control mode is selected here: • Constant supply air Temperature is controlled in relation to the constant supply-air temperature measured by the supply air sensor located in the supply air duct. -
Page 41: Temperature-Control Loop Settings
INSTRUCTIONS Commissioning guide for AHC-3000 20.1 Temperature control loop settings • If the control of the supply air oscillates, it may be necessary to change the parameter settings in the temperature control loop. • The available parameters are the P-band and I-time. -
Page 42: Heating Coil Settings (Water Coil)
INSTRUCTIONS Commissioning guide for AHC-3000 20.2 Heating coil settings (water coil) Available settings Setpoint √ Current setpoint for the current temperature control mode √ Setting range is 5.0–40.0°C Current √ Current supply air temperature Flow supply √ Current supply air flow (m3/h) Heating √... -
Page 43: Heating Coil Settings (Electric Coil 1)
INSTRUCTIONS Commissioning guide for AHC-3000 20.3 Heating coil settings (Electric coil 1) Available settings Setpoint √ Current setpoint for the current temperature control mode √ Setting range: 5.0–40.0°C Current √ Current supply air temperature Flow supply √ Current supply air flow (m Heating √... -
Page 44: Cooling Coil Settings (Water Cooling Coil)
INSTRUCTIONS Commissioning guide for AHC-3000 20.4 Cooling coil settings (water cooling coil) Available settings Setpoint √ Current setpoint for the current temperature control mode √ Setting range: 0.0–40.0°C Current √ Current supply-air temperature Cooling √ Current status value of the cooling valve (range 0–100%) Supply air flow √... -
Page 45: Cross-Flow Heat Exchanger Settings
INSTRUCTIONS Commissioning guide for AHC-3000 20.5 Cross-flow heat-exchanger settings Available settings Analogue output √ Current status value on the bypass-damper analogue output Heat recovery √ Current heat recovery output Ice protection √ Current setpoint for the ice protection √ At temperatures below the set value + P-band, the bypass damper will override modulating to 100% open. -
Page 46: Counter-Flow Heat Exchanger Settings
INSTRUCTIONS Commissioning guide for AHC-3000 20.6 Counter-flow heat-exchanger settings Available settings Analogue output √ Current status value on the by-pass damper analogue output Heat recovery √ Current heat recovery output Ice protection √ Current setpoint for the ice protection √ At temperatures below the set value + P-band, the bypass damper will override modulating to 100% open. -
Page 47: Rotary Heat-Exchanger Settings
INSTRUCTIONS Commissioning guide for AHC-3000 20.7 Rotary heat exchanger settings Available settings Heat recovery √ Current heat recovery setpoint Motor revolution √ Current motor speed (rpm) (only DRHX) Motor current √ Current motor current (mA) (only DRHX) Operating time √ Current operating time (Days) (only DRHX) -
Page 48: Summer Night Cooling (Free Cooling)
INSTRUCTIONS Commissioning guide for AHC-3000 20.8 Summer night cooling (free cooling) Summer night cooling (free cooling) Available settings Select √ Select summer night cooling “On/Off” Start √ Summer night cooling starts at a higher room temperature. √ If no room sensor is installed, the system will start at the start time set under "Start time” in order to measure the current room temperature. -
Page 49: Operation Time Schedule
INSTRUCTIONS Commissioning guide for AHC-3000 Operation time schedule 21.1 Operation modes The AHU can have different operating modes: √ Stop The system is stopped outside the configured operation periods. The frost protection of heating coils remains active and the pump and valve motioning also remains active. -
Page 50: Setting The Active Schedule Period And Fall-Back Speed
INSTRUCTIONS Commissioning guide for AHC-3000 21.2 Setting the active schedule period and fall-back speed (*1) Select start date Select stop date (*1): Set the period during which the calendar programme will be active. Here, we have selected ”Setting the schedule period” = 1 January 2017….31 December 2019 Outside this period, the AHU will run according to the selected “fall-back speed”... -
Page 51: Setting The Standard Daily-Operation Pattern
INSTRUCTIONS Commissioning guide for AHC-3000 21.3 Setting standard daily operation pattern For setting the operating pattern that will be in effect as the standard operating pattern during those periods in which the system is to run in normal operation. Select “Daily schedule” and in the dialogue box “Daily Schedule” choose “Monday” to set the operating pattern for Mondays and select “Add event”. -
Page 52: Copying A Daily Schedule To One Or More Days
INSTRUCTIONS Commissioning guide for AHC-3000 21.4 Copy a daily schedule to one or more days If the operating patterns are identical for Monday through Friday, then use the “Copy” function. Monday to selectable days for the entire week √ The operation schedule that has now been specified as the operating pattern for Monday will be copied to selected days. -
Page 53: Scheduled Operational Exceptions
INSTRUCTIONS Commissioning guide for AHC-3000 21.5 Scheduled operation exceptions Setting exceptions You may now configure the exceptions from the normal operating pattern. It is possible to make three different exception rules and each exception rule can be used in up to 10 different periods. - Page 54 INSTRUCTIONS Commissioning guide for AHC-3000 On the previous page we set the pattern for Exception 1. On this page, we select the days on which this Exception 1 must be activated. (*1) (*2) (*3) (*4) We will now make a number of time schedules when the Exception 1 must be active: Example: 1.
- Page 55 INSTRUCTIONS Commissioning guide for AHC-3000 Activate “Exception 1” on a single active week. 2. Select “+ Add” (*4 ) and select the week ......
- Page 56 Stenager 13B • DK-6400 Sønderborg Tel. : +45 73 12 13 14 • Fax +45 73 12 13 13 oj@ojelectronics.com • www.ojelectronics.com The OJ trademark is a registered trademark belonging to OJ Electronics A/S · © 2018 OJ Electronics A/S...
Need help?
Do you have a question about the AHC-3000 and is the answer not in the manual?
Questions and answers