User`s Manual
Contents
1. battery manufacturer and manufacturer of any equipment you intend to use in vicinity of battery Green Digital Power tech Co Ltd Unit 2209 22 F Wu Chung House 213 Queen s RoadbEast Wanchai HK Tel 852 69527676 Fax 852 30204173 htto www szgrn com E mail abtwyj 126 com 4 wi areen Green Digitol Power SCM2420 SLA MPPT Solar Charge Controller User s Manual July 2012 Version 1 0 Green Digital Power tech Co Ltd Brief Introduction Diagram for circuits connection SCM 2420 SLA Solar charger controller is a 300Watt 24 voltage Maximum Power Point Tracking MPPT photovoltaic PV battery charge controller Through the use of MPPT technology Solar charger controller can LED sams See let able increase charge current up to 30 or more compared to conventional controllers SCM2420 SLA has a sophisticated charge control system for many kinds of 50Ahr 200Ahr 24V Lead Acid battery type such as AGM GEL or Liquid The unit is fully protected against over temperature over current short circuit SMBus reverse battery and reverse PV connections If provided Series pass Pulse Width Modulation PWM charge voltage control combined with a multistage charge control algorithm in SCM2420 SLA It can easily install in parallel connection of output so it also suitable for large system current application condition Battery Specification for SCM 2420 SLA Input solar PV Panel OCV 35V 55V PMPP 200W 300W2. 10 CAUTION SAVE THIS INSTRUCTIONS This manual contains important safety and Operating Instructions of this unit Please read the caution of batteries or devices you want to charge firstly When charging batteries can emit explosive gases therefore it is essential to prevent flames and sparks The charger is designed for charging 24V lead acid batteries from 50 to 200 Ah Do not use for any other purpose Always provide good ventilation when charging Use of an attachment not recommended or sold by Green Digital Power tech may result in a risk of fire electric shock or Serious Injury to persons Please use a defined PV solar panel please see specification of this manual Please make sure your load device working current is less than 30A Do not wired this unit and power system with a incorrect cable gauge or damaged cord Never operate the charger if it has received a sharp blow been dropped or otherwise damaged in any way take is to a qualified serviceman Do not disassemble the charger take it to a qualified serviceman when service or repair is required Incorrect reassembly may result in a risk of electrical shock or fire When Solar charger controller is working Please DO NOT touch it because the temperature is too high 11 Working in the vicinity of lead acid batteries is dangerous Batteries produce explosive gasses during normal battery operation To reduce risk of battery explosion follow these instructions by
3. How to use Suitable Battery 24V 50 200Ahr Lead Acid battery Gel AGM or Liquid types 1 First please fix SCM2420 SLA on a metal chassis of your solar power Input solar PV Panel _ Suitable Battery system box and always provide good ventilation for your system 2 Then connect battery poles with the SCM2420 s BATT terminals please make sure polarity is corrected When battery wired correct the LED will be Green Flashing status Please use AWG 16 or better gauge 3 Next wired PV solar panel with the SCM2420 s PV terminals Polarity should be correct When PV panel is connected in daytime the LED will be enter Green solid or Red sold status ropa 4 Last please connect terminal LOAD with your load device Such as a ein DCAC inverter Also please Keep in mind the polarity should not be wrong quenmaton 5 Depend on your load working current the cable between Load and SCM2420 should be AWG 14 or better 6 When the battery voltage is too low SCM2420 will cutoff load output in this condition the LED will Red flashing When battery is charged to a normal level please switch off then switch on your LOAD switcher this reset action is necessary otherwise your load will not work even the battery is full Note 1 If SMBus port provided it will work in slave mode and address is 0x16
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