Sens EnerGenius NRG24-20 Installation & Operation Manual
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Sens EnerGenius NRG24-20 Installation & Operation Manual

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Installation & Operation Manual
SENS Part Number:
Document Revision:
DCN Number:
Date:
Installation or service questions?
Call SENS at 1.800.742.2326 (303.678.7500)
between 8 a.m. and 5 p.m. (Mountain Time)
Monday through Friday, or visit our website.
Service hotline: 1.800.742.2326
1.303.678.7500
Copyright © Stored Energy Systems LLC 2007
NRG12-20: 12-Volt, 20-Amp Battery Charger
NRG24-20: 24-Volt, 20-Amp Battery Charger
NRG22-20: 12/24-Volt, 20-Amp Battery Charger
101298
V
107672
June 25, 2019
SENS EnerGenius Technical Manual
1840 Industrial Circle
Longmont, CO 80501
Phone:
303.678.7500
800.742.2326
Fax:
303.678.7504
Email:
service@sens-usa.com
Web:
www.sens-usa.com
®
™
1

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Summary of Contents for Sens EnerGenius NRG24-20

  • Page 1 Date: Longmont, CO 80501 Phone: 303.678.7500 800.742.2326 Installation or service questions? Fax: 303.678.7504 Call SENS at 1.800.742.2326 (303.678.7500) between 8 a.m. and 5 p.m. (Mountain Time) Email: service@sens-usa.com Monday through Friday, or visit our website. Web: www.sens-usa.com Service hotline: 1.800.742.2326 1.303.678.7500...

  • Page 2: Important Safety Instructions For Installer And Operator

    1. SAVE THESE INSTRUCTIONS. 2. DO NOT EXPOSE CHARGER TO RAIN OR SNOW. 3. Use of an attachment not recommended or sold by SENS may result in a risk of fire, electric shock, or injury to persons. 4. ONLY TRAINED AND QUALIFIED PERSONNEL MAY INSTALL AND SERVICE THIS UNIT.

  • Page 3: Model Number Configuration

    SENS EnerGenius Technical Manual MODEL NUMBER CONFIGURATION This manual contains important safety, installation and operating instructions for SENS battery charger model NRG12-20 (configured for 12V,20A only), NRG24-20 (configured for 24V, 20A only) and NRG22-20 (field configurable for 12V or 24V, 20A).

  • Page 4: Preparing For Use

    SENS EnerGenius Technical Manual 1. PREPARING FOR USE: WARNING: ONLY TRAINED AND QUALIFIED PERSONNEL MAY INSTALL AND SERVICE THIS UNIT. A. INSTALLATION OF THE UNIT MUST COMPLY WITH LOCAL ELECTRICAL CODES AND OTHER APPLICABLE INSTALLATION CODES. INSTALLATION MUST BE MADE ACCORDING TO THE INSTALLATION INSTRUCTIONS AND ALL APPLICABLE SAFETY REGULATIONS.
  • Page 5 SENS EnerGenius Technical Manual Neutral +Battery Temperature sensor 115/230VAC -Battery Alarm contacts Use wire routing devices to hold alarm and temperature sensor Grounding conductors at least 1/4” (6.3 mm) Conductor away from power conductors Use conductors rated 90°C/194°F or higher.

  • Page 6: Charger Location

    (approximately 10 minutes) and start charging the batteries. If it is not possible to decrease the system resistance the Battery Fault feature can be disabled. Please contact SENS at 1- 800-742-2326 for further information.

  • Page 7: Mounting Location

    SENS EnerGenius Technical Manual 7. MOUNTING LOCATION A. See the safety instructions for important information concerning the charger location. B. The charger should be installed in a sheltered area, protected from rain and snow. C. The charger should not be located where temperatures are expected to be colder than -20ºC/-4°F, or hotter than +40ºC/104°F for operation at rated output current.
  • Page 8 SENS EnerGenius Technical Manual Mounting on a drywall: • Use ¾ in. thick plywood to span two vertical support members in the wall. The plywood sheet normally does not have to be more that 2 ft. by 2 ft. square.
  • Page 9 SENS EnerGenius Technical Manual FIGURE 2B FIGURE 2A E. Connect the AC line and neutral conductors at TB1. If there is an identified grounded circuit conductor (neutral), attach it to the terminal marked N. TB1 will accept 14-6 AWG (2.5-16 mm ) conductors.

  • Page 10: Internal Adjustments

    SENS EnerGenius Technical Manual G. If the optional remote temperature sensor is used: • Remove the internal sensor at TB4, if it is present. • Locate the remote sensor where it will accurately detect the battery temperature. • Connect the remote sensor leads to TB4. The sensor is not polarized, so it does not matter which lead connects to terminal #1.
  • Page 11 1.5V/cell for lead acid and 1.0V/cell for nickel cadmium batteries or until the charger returns to FLOAT MODE (FLOAT MODE LED will be green). See SENS Application Note 10 to finish fully commissioning the batteries, as using the JUMP feature alone is not sufficient. Once the batteries are fully charged, the jumper may be removed or left in the JUMP position permanently.
  • Page 12 SENS EnerGenius Technical Manual 11. CHECK OUT Green for temperature-corrected charger voltage Green for normal AC input Red for internal charger failure Red for excessive battery voltage DC Volt/Amp Meter Display Red for low battery voltage Red for low or missing AC input...

  • Page 13: Advanced Design Features

    See chart below. AUTOMATIC TEMPERATURE COMPENSATION acid Temperature vs. volts per cell lead acid SENS limits here to prevent damaging high voltages at customer equipment Temperature Degrees C Degrees C Fault Tolerant: The charger is protected from the following faults: •...
  • Page 14 SENS EnerGenius Technical Manual either too high or too low, the charger enters a “lockout” period for approximately 10 seconds before attempting an automatic restart. • The “JUMP” feature (described in Section 11-F in this manual) may be used to allow the battery charger to over- ride the lockout and start charging a low-voltage discharged battery.
  • Page 15 SENS EnerGenius Technical Manual ITEM TEXT Meaning Troubleshooting CHGR FAIL Charger Fail Charger unable to provide charging current to battery. Replace unit. AC input voltage is too low to supply prop- er current when load is applied. Control board is damaged and should be replaced.
  • Page 16 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—REPEATED BLOWN AC FUSE START: AC FAIL LED red INPUT SWITCH FUSE PROPERLY CONFIGURE CONFIGURED FOR STILL SELECTION SWITCH 115V BUT SOURCE BLOWS? IS 230V? AC VOLTS FUSE CORRECT CORRECT AC INPUT STILL (MEASURE WITH...
  • Page 17 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—AC FAIL ALARM START: AC FAIL LED red INPUT ALARM PROPERLY SELECTION STILL CONFIGURE SWITCH PROPERLY PRESENT? SELECTION SWITCH CONFIGURED? AC VOLTS AND ALARM FREQ CORRECT CORRECT AC INPUT STILL (MEASURE WITH SUPPLY PROBLEM PRESENT?
  • Page 18 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—CHARGER FAIL ALARM START: CHGR FAIL LED red AC VOLTS LOW ALARM (MEASURE WITH CORRECT AC INPUT STILL MULTIMETER)? SUPPLY PROBLEM PRESENT? ALARM STILL CONNECTORS CONNECTIONS PRESENT? FIRMLY SEATED? ALARM REPLACE CIRCUIT STILL BOARD TRAY...
  • Page 19 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—DC HIGH ALARM START: DC HIGH LED red ALARM BATTERY RANGE ADJUST JUMPER STILL VOLTAGE JUMPER FOR 12V OR 24V PRESENT? PROPERLY SET? BATTERY CORRECT BATTERY/ ALARM DC VOLTS HIGH LOAD VOLTAGE STILL (MEASURE WITH...
  • Page 20 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—DC LOW ALARM START: DC LOW LED red ALARM BATTERY RANGE ADJUST JUMPER STILL VOLTAGE JUMPER FOR 12V OR 24V PRESENT? PROPERLY SET? BATTERY AC VOLTS AND ALARM FREQ CORRECT CORRECT AC INPUT STILL (MEASURE WITH...
  • Page 21 SENS EnerGenius Technical Manual TROUBLESHOOTING GUIDE—BATTERY FAULT ALARM START: BATT FAULT LED red FIX LEADS THAT ARE TOO LONG, TOO SMALL, POOR- ALARM BATT FAULT LED HIGH RESISTANCE LY CONNECTED OR OPEN STILL SOLID RED IN CHARGER (SEE MANUAL FOR WIRE...

  • Page 22: Normal Set Up

    SENS EnerGenius Technical Manual C. NORMAL SET UP: 1. Apply AC power by closing the branch circuit breaker and any other disconnect devices. 2. The meter display should light immediately after power on. The green AC/ ON LED should be lighted. If a temperature sensor is present, either internal or remote, the green T-COMP (Temperature Compensation) LED should be lighted.
  • Page 23 Directives(s) and Standard(s). 6/7/2019 ________________________________________ ______________________ Sam Coleman Date Compliance Manager Stored Energy Systems, LLC STORED ENERGY SYSTEMS, LLC1840 INDUSTRIAL CIRCLE, LONGMONT, COLORADO 80501 FAX 303.678.7504 303.678.7500 www.sens-usa.com email: info@sens-usa.com FORM-227 REV G DATE ISSUED: 6/7/2019...
  • Page 24 Return Material Authorization (RMA) number provided by SENS. If, in SENS’ opinion, the problem can be rectified in the field, SENS may elect to ship replacement parts for customer installation instead of having the product returned to the factory.

This manual is also suitable for:

Energenius nrg12-20Energenius nrg22-20Energenius nrg22-10-rc

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