Technical Note Powering Xanbus network through Charge Controller AUX output XW Xantrex Technology Inc. 8999 Nelson Way Burnaby, BC V5A 4B5 Canada www.xantrex.com Scope This Application Note provides procedures for powering the Xanbus Network from the XW Solar Charge Controller Auxiliary Power Supply. Introduction Xanbus network allows the integration and communication of Xanbus enabled devices, thus simplifying and automating capabilities such as configuration, control, and monitoring of the power system. Except for the XW inverter/charger and the XW charge controller that provide their own power, the rest of the XW devices power up from the Xanbus network. In an XW system, the XW inverter/charger is the sole provider of power to the network, capable of providing 15Vdc/200mA to each device in the system. The XW charge controller (XW MPPT-60) could be used along with the XW system control panel (XW SCP) and Xantrex Gateway in installations where the XW inverter/charger has not been integrated into the power system. The XW Automatic Generator Start (XW AGS) could also be integrated if the XW SCP is present, although features such a Stop Absorb, Stop Float, and Start Load will no longer be available in the absence of the XW inverter/charger. For such systems, however, an external power supply is required to enable the Xanbus network. Each component has its own power requirements. This is shown below: XW SCP (2.3W) Xantrex Gateway (2.4W wired mode) Xantrex Gateway (~3 W wireless mode) XW AGS (1.8W) The XW charge controller’s auxiliary supply (Aux supply) can be used to enable the Xanbus network. Note that the XW Charge controller’s Aux supply is limited to 200mA and 13V (2.6W), capable of powering only one Xanbus device. It can supply enough power to one XW SCP (2.3W), or one Gateway in wired mode (2.4W), however, it cannot supply enough power for the Gateway in wireless mode (~3W). The XW AGS, on the other hand, consume about 1.8W, but some relays are designed to run off 15V, so operation at 13V is not guaranteed. Alternatively, if a 120VAC contact is available, a Xanbus power adapter, part number 8651057, could be used instead. This power adapter is limited to 5.5W at voltages from 9V to 16V. For a Xanbus power adapter, contact Xantrex Technology at 1800-670-0707 or email@example.com. Note: The MPPT Aux power is not continuous and will cycle once every 24 hours. This may cause some strange network device behavior. Technical Note Powering Xanbus network through Charge Controller AUX output XW Xantrex Technology Inc. 8999 Nelson Way Burnaby, BC V5A 4B5 Canada www.xantrex.com The Xanbus Cable: Xanbus cable is a standard Category 5 (CAT 5 or CAT 5e) cable available from any computer supply store. The cable consists of eight conductors in four twisted pairs with an RJ45 modular connector wired to the T568A standard. A Xanbus cable needs to be customized to connect one end to the XW charge controller Aux supply. The following table contains the arrangements of wire colors to pin numbers for the T568A standard: Pin Number 1 2 3 4 5 6 7 8 Conductor Name NET_S NET_S NET_C CAN_L CAN_H NET_C NET_S NET_C CAT 5 Cable Insulation Color White/Green Green White/Orange Blue White/Blue Orange White/Brown Brown CAT 5e Cable insulation Color White/Orange Orange White/Green Blue White/Blue Green White/Brown Brown XW Charge Controller AUX supply: The charge controller has a configurable auxiliary output (producing 5 to 13 volts and up to 200 mA) that can be used to power the Xanbus network and allow communication between Xanbus enabled devices. CAUTION! The Aux supply is intended only to energize a low-current circuit. Connection to a highamperage device will open the fuse in the common line and possibly damage the unit. The Aux supply is located inside the wiring compartment where the terminals connectors for DC wiring are located. See below: Technical Note Powering Xanbus network through Charge Controller AUX output XW Xantrex Technology Inc. 8999 Nelson Way Burnaby, BC V5A 4B5 Canada www.xantrex.com Customizing Xanbus cable (Network Power supply cable): 1. Use standard CAT5 Ethernet cable and wire one end of the cable to be connected to the MPPT Aux supply terminal block: Pins 1, 2 and 7 are positive and pins 3, 6 and 8 are negative. Do not connect to pins 4 and 5 as they are for network communication. Be aware that the network devices do not have reverse polarity protection so improper connections will cause permanent damage. To avoid the risk of damaging the devices, it is recommended that a series diode be placed in the positive connection (Anode to MPPT and Cathode to network device). Once the polarity is verified as correct, the polarity diode should be removed so that it does not limit the power to the network. 2. Next connect the power cable to the MPPT Aux Terminal Block. The left side is positive and the right side is negative when the unit is installed upright. Technical Note Powering Xanbus network through Charge Controller AUX output XW Xantrex Technology Inc. 8999 Nelson Way Burnaby, BC V5A 4B5 Canada www.xantrex.com Connecting Xanbus network: 1. The RJ45 end of the network power supply cable simply plugs into any available Xanbus Port. It can be plug directly into any of the XW charge controller Xanbus Ports to keep the cable short and inside the wiring box. 2. Using standard Xanbus cable (not modified cable), link each device on the network in a daisy chain layout. 3. Two terminators are required to ensure the communication signal quality on the network. Ensure that the Xanbus devices at each end of the chain have a male terminator inserted into their open network ports. Configuring the AUX Supply: 1. Press the MPPT Enter Button to bring up the Menu. 2. Press the down button until the display says Display Menu 3. Press the Enter Button Once 4. Press the Up Button Once 5. Check that the unit is configured for Advanced Display mode. Change to the advanced display mode if it is not. 6. Press the Exit Button Once 7. Press the Down Button until the display says Aux Menu 8. Press the Enter Button Once 9. Press the Down Button until the Output Level is Displayed. 10. Set the Output Level to 13V. 11. Use the Up/Down buttons to scroll to the Output Mode and make sure that it is configured for Active High 12. Use the Up/Down buttons to scroll to the Aux Control Mode and then press the Enter Button followed by the Up Button to change the Aux Supply to Manual On. 13. The MPPT should now be supplying power to its Aux Power terminal block and powering the network if the power cable has been correctly connected.
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