Banner DXM100-S Series Instruction Manual

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Banner DXM100-S Series Instruction Manual Manual pdf 29 page image

Modbus Slave ID Modbus Register Description6084 On-board thermistor temperature (⁰C)* The Slave ID for the base board is set at the factory. This may be changed using the base board DIP switch settings.5.3 Working with Solar PowerA reliable solar system requires careful planning and monitoring to size the components correctly. The recommendationsprovided are for the DXM Slave system as an autonomous system.Adding extra components increases the power requirements and likely requires increasing the solar system components.Depending upon the geographical location, the size of the solar panel and battery may vary.5.3.1 Setting the DXM Slave for Solar PowerBy default, the DXM Slave is set from the factory to charge a backup battery from a line power source.5.3.2 Solar ComponentsThe components of a solar system include the battery and the solar panel.BatteryThe DXM solar controller is designed to use a 12 V lead acid battery. The characteristics of a solar system require thebattery to be of a certain type. There are basically two types of lead acid batteries:• SLI batteries (Starting Lights Ignition) designed for quick bursts of energy, like starting engines• Deep Cycle batteries - greater long-term energy delivery. This is the best choice for a solar battery.Since a solar system charges and discharges daily, a deep cycle battery is the best choice. There are different versions of alead acid battery: wet cell (flooded), gel cell, and an AGM (absorbed glass mat).Wet cell batteries are the original type of rechargeable battery and come in two styles, serviceable and maintenance free.Wet cell batteries typically require special attention to ventilation as well as periodic maintenance but are the lowest cost.The gel cell and AGM battery are sealed batteries that cost more but store very well and do not tend to sulfate or degradeas easily as a wet cell. Gel or AGM batteries are the safest lead acid batteries you can use.Battery CapacityBattery capacity is a function of the ambient temperature and the rateof discharge. Depending upon the specific battery, a battery operatingat –30 °C can have as much as 40 percent less capacity than a batteryoperating at 20 °C. Choose enough battery capacity based on yourgeographical location.A larger capacity battery typically lasts longer for a given solarapplication because lead-acid batteries do not like deep cycling(discharging a large percentage of its capacity). Depending upon thebattery, a battery discharging only 30 percent of its capacity beforerecharging will have approximately 1100 charge/discharge cycles. Thesame battery discharging 50 percent of its capacity will haveapproximately 500 charge/discharge cycles. Discharging 100 percentleaves the battery with only 200 charge/discharge cycles.Batteries degrade over time based on discharge/charge cycles andenvironmental conditions. Always monitor the battery system to obtainthe best performance of the solar powered system.Use this as a guide to the approximate state ofcharge and in determining when to applyconservation measures.Average Voltage Readings Relative to BatteryChangeState of Charge (%) Open Circuit Voltage100 13.0 or higher75 12.650 12.125 11.660 11.4 or lessSolar PanelBanner solar panels come in two common sizes for the DXM Slave: 5 Watt and 20 Watt. Both panels are designed to workwith the DXM Slave but provide different charging characteristics. Use the 5 watt panel for light duty operation and use the20 watt panel when you require greater charging capabilities.DXM100-Sx Wireless Modbus Slavewww.bannerengineering.com - Tel: +1.763.544.3164 29