Table of Contents Introduction OpenBAS-HV-NX10 Series Building Automation Controller .......... Features ......................... Overview OpenBAS-HV-NX10 Series Components ..............Installation Parts of the Enclosure ....................Controller Board Connections ..................Installing Accessories ....................Ethernet Controllers (OpenBAS-NWK-ETH3) ..............DIP Switches ........................USB ..........................Reset and Download Buttons ..................
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List of Figures Figure 1 Parts of the enclosure ....................Figure 2 Tabs on enclosure ......................Figure 3 Lift tabs and remove circuit board .................. Figure 4 Board connections ......................Figure 5 COM ports ........................Figure 6 Location of factory-installed modules and jumpers ............Figure 7 The jumper and RS-485 module are removed from P1 ..........
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List of Tables Table 1 OpenBAS-HV-NX10 Series Controllers ................. Table 2 OpenBAS-HV-NX10 Series Accessories ............... Table 3 OpenBAS-HV-NX10 Series Compatible Modules ............Table 4 Analog Input Wiring ......................Table 5 Wiring a 1000 Ω temperature sensor ................Table 6 Digital Input Wiring ......................
Automation Controller. OpenBAS-HV-NX10 Series Building Automation Controller Mircom’s OpenBAS-HV-NX10 Series building automation controller is an HVAC controller with an integrated PLC (programmable logic controller) and scheduler. It includes 18 hardware input/output points, 2 RS-485 field bus connections, USB, SPI, and I C buses.
Installation Note: Installation of OpenBAS-HV-NX10 series automation controllers should be in accordance with the Canadian Electrical Code or the National Electrical Code, and comply with all local regulations. Final acceptance is subject to the Local Authority Having Jurisdiction (AHJ). Parts of the Enclosure...
Installation To remove the circuit board from the enclosure Caution: Risk of Electric Shock. Disconnect the mains power and disconnect the controller from all wiring before opening the enclosure. Attention: Always hold circuit boards by the edges to prevent damage from static electricity.
Installation 3. Hold the circuit board with one hand, and with the other hand lift the tabs so that you can remove the circuit board from the enclosure. See Figure 3. Lift tabs and remove circuit board Circuit board Figure 3 Lift tabs and remove circuit board Attention: Be careful not to break the tabs.
Installation Connections for OpenBAS-ACC-RS485 OpenBAS-ACC-RS232 Field bus connections and connection for OpenBAS-ACC-DB9 COM1 COM2 COM3 Figure 5 COM ports For example, if OpenBAS-ACC-RS485 is installed in P1 and OpenBAS-ACC-RS232 is installed in P2, then COM1 functions as optically isolated RS-485, and COM2 functions as RS- 232.
Installation Factory-installed RS-485 modules Jumpers Figure 6 Location of factory-installed modules and jumpers To install a communication converter 1. Open the jumper. 2. Remove the factory-installed RS-485 module. Factory-installed RS-485 Jumper module removed open Figure 7 The jumper and RS-485 module are removed from P1 15 (45)
Installation 3. Install the communication converter. OpenBAS-ACC-RS232 Figure 8 OpenBAS-ACC-RS232 is installed in P1 3.3.2 Memory Expansion Card (OBS-ACC-32K128) and Wireless Receiver (OpenBAS-HV-RF433R) Connect the memory expansion cards to either one of the two terminals shown in Figure 9. They are labeled I2C and I2CB. Note: When connecting the I2C ports on 2 devices, make sure to connect pin 1 on the first device to pin 1 on the second device.
Installation Connect the OpenBAS-HV-RF433R wireless receiver to the port labeled I2C, so that it is accessible when the board is in the enclosure. Connection for wireless receiver or memory expansion card Connection for OpenBAS-HV-LCD or memory expansion card Connection for OpenBAS-HV-CORE2 SPI port for Ethernet controller...
Use of another battery may present a risk of fire or explosion. The battery is used only during power outages for real time clock and data retention. The Mircom part number for the battery is BT-025. Install the battery before mounting the controller. 18 (45)
Installation To install or replace the battery 1. Disconnect the mains power and open the mains breaker. 2. Disconnect all wiring from the unit. 3. Remove the top cover as described on page 21. 4. Disconnect the old battery. 5. Dispose of the used battery promptly. Keep away from children. Do not disassemble and do not dispose of in fire.
On OpenBAS-HV-NX10D, connect the OpenBAS-HV-CORE2 display to the connection labeled N2. Make sure that the Mircom logo is the right way up. 4. Secure the display with the 4 screws. Attention: Always hold circuit boards by the edges to prevent damage from static electricity.
Installation 3.11 Mounting the Enclosure Attention: Mount the enclosure on a DIN rail in a UL-compliant metal box. Do not drill holes in the enclosure or modify the enclosure in any way. To mount the enclosure on a DIN rail Mount the enclosure with terminal labels the right way up and the mounting clip on the bottom.
Field Wiring Note: Installation of OpenBAS-HV-NX10 series automation controllers must be in accordance with the Canadian Electrical Code or the National Electrical Code, and comply with all local regulations. Final acceptance is subject to the Local Authority Having Jurisdiction (AHJ).
Field Wiring 4.2.1 24 VDC or 24 VAC When the controller is powered from the 24V terminal, it can provide 12 VDC power to field devices through the +12 terminal. In this case, the +12 terminal can provide up to 250 mA. 0V +12 24 VAC/VDC Figure 15 Power supply - 24 VAC or 24 VDC...
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0V terminal of the controller. To ensure that the universal inputs operate correctly, follow these guidelines: • Limit the distance between the analog sensor and the controller to 10 m (30 ft). Mircom recommends shielded wire for noisy environments. •...
Field Wiring To use the universal inputs as analog inputs 1. Connect the appropriate analog signal to the universal input according to the diagrams below. 2. Configure the analog input type and then calibrate using the OpenBAS software. Terminal Labeling on Field Devices The positive terminal on field devices might be labeled one of the following: +PWR The negative terminal on field devices might be labeled one of the following:...
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Field Wiring Table 4 Analog Input Wiring (Continued) Type of field device Power source Wiring diagram 24 V Field Device Controller 24 V external power supply common to field 24 V powered device and controller. transducer with 1-10 Signal Power can be 24 VDC or VDC output VAC as required by the field device.
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Field Wiring Table 4 Analog Input Wiring (Continued) Type of field device Power source Wiring diagram 24 VDC 2-wire transducer with 4- Field Device Controller 20 mA or 0-20 mA output Connect an external 250 Ω ½ Watt 1% load 24 VDC power supply resistor in parallel common to field device...
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Field Wiring Table 4 Analog Input Wiring (Continued) Type of field device Power source Wiring diagram 3 wire transducer with 4- External power supply for 20 mA or 0-20 mA output field device (depends on Connect an external 250 field device requirements) Field Device Controller Ω...
Field Wiring 4.3.3 Resistive 1000 Ω Temperature Sensor For resistive temperature sensors, the corresponding DIP switch must be ON. See section 3.5 on page 17. For all other devices, the DIP switch must be OFF. Table 5 Wiring a 1000 Ω temperature sensor Type of field device Power source Wiring diagram 1000 Ω...
Field Wiring Any voltage that lies between 4.1 to 7.9 V can give ambiguous results and must be avoided. See Figure 19. Input Voltage +12V Valid Valid Uncertain ZERO region region region Figure 19 Digital input voltage range The digital inputs can be used as frequency or pulse counters with these specifications: •...
To ensure that analog outputs operate correctly, follow these guidelines: • Use 18 AWG stranded wire. • Limit the distance between the field device and the controller to 10 m (30 ft). Mircom recommends shielded wire for noisy environments. 31 (45)
Field Wiring • If this distance is not possible, longer wire runs with shielded wire are allowed up to 30 m (100 ft). Connect the shield to any 0V terminal on the controller, making sure to isolate the shield on the other end. Failing to do so creates ground loops. •...
Field Wiring Table 7 Analog Output Wiring (Continued) Type of field device Wiring diagram Field Device Controller 24 V 24 VAC or VDC valve or damper with 1-10 VDC Signal control input Digital Relay Outputs Outputs 1 and 5 have common (labeled BO), normally open (labeled no), and normally closed (labeled nc) contacts.
Field Wiring Note: Installation of OpenBAS-HV-NX10 series automation controllers must be in accordance with the Canadian Electrical Code or the National Electrical Code, and comply with all local regulations. Final acceptance is subject to the Local Authority Having Jurisdiction (AHJ).
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Field Wiring Table 8 Surge Protection on Relay Outputs (Continued) Type of field Notes Wiring diagram device High impedance lamps such as LED lamps require a 15 kΩ Controller 120 VAC LED lamp 1W 5% resistor in parallel to 120 VAC LED the lamp to prevent current leakage.
Note 3: To avoid intermittent communication blackouts, the isolation provided by the OpenBAS-ACC-RS485 module is highly recommended for noisy environments, and to prevent damage to the boards in extreme cases, especially if the OpenBAS-HV-NX10 series controller is inside an enclosure containing high voltage wiring.
Figure 24 Networking with OpenBAS-NWK-ETH3 over RS-458 4.7.1 RS-485 Details Figure 25 shows 3 controllers networked with RS-485. The list of supported protocols is in chapter 5. • 22 AWG twisted pair • Maximum length: 1219.2 m (4000 feet) • Mircom recommends shielded cable 37 (45)
Field Wiring First controller on network Second controller on network Connect shield to Last controller chassis ground on on network one metal enclosure only Figure 25 Networking with RS-485 Connections and LEDs on OpenBAS-HV-HX10D USB connection USB connection for programming for backup Send and receive on P3...
Field Wiring Circuit Board LEDs • PWR: Is red when the unit is powered • TX and RX: Flash green to indicate communication through ports COM1 and COM2 Figure 27 LEDs 39 (45)
Power Supply Protection: Resettable Fuse 1.1 A Battery: FDK Corporation ML2430 Type: lithium Nominal capacity: 100 mAh Nominal voltage: 3 V Mircom part number: BT-025 Relay Outputs 1 and 5: Voltage, current Load Form 125 VAC, 5 A General Use...
As the only individual in contact with system users, please bring each item in this warning to the attention of the users of this Mircom System. Failure to properly inform system end-users of the circumstances in which the system might fail may result in over-reliance upon the system.
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11. Battery Failure. If the Mircom System or any device connected to the system operates from batteries it is possible for the batteries to fail. Even if the batteries have not failed, they must be fully charged, in good condition, and installed correctly.
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20. Integrated Products. Mircom System might not function as intended if it is connected to a non-Mircom product or to a Mircom product that is deemed non-compatible with a particular Mircom System.
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