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Input: DC12V or DC24V solar panel array (Max 50Voc)
What comes in the box:
1 each: PT20 Charge Controller
1 each: User Manual
1 each: Temperature Sensor (2.9m in length)
1 each: Fused Battery Harness (3m in length)
1 each: Solar Input Adapter (allows bare wire
PT20_PWM_Manual_v6.indd 1
PT20_PWM_Manual_v6.indd 1
INSTALLATION MANUAL
For Model PT20 Charge Controller
PT20 Charge Controller
Model: PT20
Part #: 746X920
Output: DC 12V 20A
DC 24V 20A
User Manual
connection to solar input)
6/16/20 8:50 AM
6/16/20 8:50 AM
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Table of Contents
Summary of Contents for PulseTech PT20
- Page 1 INSTALLATION MANUAL For Model PT20 Charge Controller PT20 Charge Controller Model: PT20 Part #: 746X920 Input: DC12V or DC24V solar panel array (Max 50Voc) Output: DC 12V 20A DC 24V 20A User Manual What comes in the box: 1 each: PT20 Charge Controller 1 each: User Manual 1 each: Temperature Sensor (2.9m in length)
- Page 2 THIS MANUAL CONTAINS IMPORTANT INSTRUCTIONS FOR INSTALLATION AND MAINTENANCE OF THE PT20 CHARGE CONTROLLER Contents 1) IMPORTANT SAFETY INSTRUCTIONS - PLEASE READ 2) Overview Intro PulseTech 3) Features 4) Wiring and Installation Important Installation Notes - Please Read Device Connections...
- Page 3 • Audible buzzing noise during charging is normal, particularly during absorption and float modes. The noise is due to the PT20 charging functionality of the device and not an indication of a device failure. PT20_PWM_Manual_v6.indd 3 PT20_PWM_Manual_v6.indd 3...
- Page 4 PulseTech patented technology has been proven to increase the life of lead-acid/AGM batteries by three times their normal life. This technology is built into the PT20 and is automatically enabled to be turned on for any lead-acid/AGM battery charging profile and is active during charging only.
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Page 5: Wiring And Installation
3. Always use a 25-amp fuse between the battery and the charge controller. 4. The maximum overcurrent protection of the PT20 is 22-amps. 5. It is important to use the external temperature sensor to ensure proper battery charging for all lead-acid/AGM battery types. Please tape the ring terminal end to your battery or connect it to the positive battery post. -
Page 6: Device Connections
Device Connections The PT20 has three separate connectors that come out of the housing. The solar and battery connectors are both 25A rated ATP connectors. When used with the solar battery harness, the polarity will be indicated with red as positive and black as negative for both the battery and the solar sides. - Page 7 Temperature Sensor The PT20 comes with a 2.9m (9.5 ft.) temperature sensor with a ring terminal on one end and two leads on the other end. If using a lead- acid/AGM battery, connect the temperature sensor to the charge controller by pressing the two connectors together. Once connected, give each lead a light tug to ensure that they are properly fitted.
- Page 8 5) PulseTech Functionality The PT20 controller contains a proprietary, patented PulseTech Pulsing circuit that has been scientifically proven to extend the life of all types of lead acid batteries. This is achieved using PulseTech’s patented pulsing technology that breaks up the lead sulfates that build up on the plates inside the battery whenever the battery is discharging.
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Page 9: Charging Profiles
6) Charging Profiles The PT20 contains 4 pre-programmed, multi-stage battery profiles that have been customized to each specific battery type. There are profiles for AGM, Gel, Conventional Lead-Acid (WET) and Lithium (Lithium Ion & LiFePo4) Batteries. See Table 3 below for detailed descriptions of the different charging stages. -
Page 10: Led Operation
Blinking Red = Battery Error Off = No Battery Connected Pulse LED This LED gives the current status of the on-board PulseTech Pulsing Technology. Blinking Red = PulseTech Pulsing Technology is active and pulsing Off = Pulsing is off 12 Volt LED This LED is lit if the device detects a 12V battery. -
Page 11: Troubleshooting
Controller “blinking orange and green” If you are looking at the front face of your PT20 Charge Controller during dusk or dawn, you may observe that the battery status light is switching quickly between green and orange. This may look like an error, but it is not. -
Page 12: Specification
CE/EMC: EN61000-6-2 and EN61000-6-4 CE/LVD: EN62109-1 CB: IEC 62109-1 Australia (Safety EMC RCM) (1) Overcurrent protection set at 22-amps for the PT20. PV short circuit current above this value may damage the device. PT20_PWM_Manual_v6.indd 12 PT20_PWM_Manual_v6.indd 12 6/16/20 8:50 AM... - Page 13 Figure 4: PT20 Mounting Diagram 10) Contact Us PulseTech Products Corporation 1100 S. Kimball Ave. Southlake, TX 76092-9009 ppc@pulsetech.net www.pulsetech.net Toll Free: 800-580-7554 PT20_PWM_Manual_v6.indd 13 PT20_PWM_Manual_v6.indd 13 6/16/20 8:50 AM 6/16/20 8:50 AM...
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