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Grape Solar GS-PWM-20A User Manual

Charge controller
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Grape Solar
GS-PWM-20A
Charge Controller
User Manual
*Grape Solar reserves therights tomodify these specifications without
notice.
1. Warnings and Tools Icon Chart

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Summary of Contents for Grape Solar GS-PWM-20A

  • Page 1 Grape Solar GS-PWM-20A Charge Controller User Manual *Grape Solar reserves therights tomodify these specifications without notice. 1. Warnings and Tools Icon Chart...

  • Page 2: Product Features

    Icons Name Description High voltage device. Installation should be High Voltage performed by an electrician. This device wiLL produce heat. High Temperature Mount device away from other items. Environmental Hazard Electronic Equipment. Do not put in LandfiLL A wire cutter is needed for cutting and Wire Cutter stripping wires prior to connection.

  • Page 3: Device Diagram

    Thank you for choosing Grape Solar. This PWM solar charge controller is a device for solar charge regulation and direct current output Load control. This device is mainly used in small sized off-grid solar power systems. The Grape Solar PWM-20A charge controllers have these features ：...
  • Page 4 weather safe location. Attach the mounting bracket to the back of the controller using screws. Mark the brackets mounting holes on the mounting surfece. Attach the mounting bracket to the mounting surface using screws. Mark the controller's dimension and mounting holes on the mounting surface. Make necessary alterations to ensure the controller fits into the mounting surface snugly.
  • Page 5 During installation of your PWM controller, please follow below order of connection ： ： ： ： l.Connect the positive battery wire followed by the negative battery wire. 2.Make sure your solar panels are fully covered to prevent electrical shock. Connect the positive solar i array output wire followed by the negative solar array output wire.
  • Page 6 Description Status Icon Indication Status Steady On Daylight Detected No Daylight Detected Solar Solar Charging Battery Flowing Flash Solar Input System Over Voltage Steady On Battery Connected and Functional No Battery Connection Battery Slow Flash Battery Over-Discharged Slow Flash Battery Over-Voltage Flowing DC Load On DC Load Off...
  • Page 7 seconds while controller detects operating environment. LCD Screen Display Cycle · T he battery voltage view will be displayed by default. Use the up and down arrow keys to cycle through different views. · T he battery voltage view will resume upon 12 seconds of inactivity. T he Error Code view will be displayed automatically if there is any controller error ·...
  • Page 8 set for each type of Sealed/AGM Battery Batteries. Gel Battery Lithium Battery Customize charge & discharge voltages. Advance Battery Settings · In Lithium mode, short press the arrow key again to cycle through each parameter view. · Use the load key to adjust parameter value, then Long press arrow key to save and exit.

  • Page 9: Error Code

    Daylight AutoControl The PV voltage turns on the load when it is light DC Load turns on when daylight is detected. 1~14 Daylight On /Timer Off DC Load turns off according to timer. Mode 1 = turn off after 1 hour, etc. Manual Mode DC Load turns on/off by pressing the Load key.

  • Page 10: Controller Specification

    Battery connection wires connected with reverse polarity. Polarity Disconnect and re-connect with correct wire polarity. *Contact Grape Solar for Live technical support on additional troubleshooting. 11. Controller Specification The variable “n" is adopted as a multiplying factor when calculating parameter...
  • Page 11 For example, the equalize charge voltage for a 12V FLD (Flooded) battery bank is 14.8V*1=14.8V. The equalizing charge voltage for a 24V FLD (Flooded) battery bank is 14.8V*2=29.6V. Parameter Value Model No. GS-PWM-20A 12V/24V Battery System Voltage Auto (FLDA3EL/5LD) Manual (Li) No-Load Loss 8ma (12V), 12ma (24V) Max Solar Input Voltage <55V...

  • Page 12: Product Dimensions

    Float Charge Voltage 13.8V*n — Boost Charge Recovery Voltage 13.2V*n — Over-discharge Recovery 12.6V*n 12.6V*n Voltage (adjustable) 11.1V*n Over-discharge Voltage 11.1V*n (adjustable) 12. Product Dimensions...

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