Merlin SmartGauge Installation And User Manual
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Merlin SmartGauge Installation And User Manual

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Merlin Power Systems
version: 2.0.2
SmartGauge Installation and User Guide
SmartGauge Installation and User Guide
Merlin Power Systems
Unit 4, Cabot Business Village
Holyrood Close
Poole, Dorset BH17 7BA
T: +44 (0) 1202 697979
F: +44 (0) 1202 691919
www.merlinpowersystems.com
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  • Page 1 Merlin Power Systems version: 2.0.2 SmartGauge Installation and User Guide SmartGauge Installation and User Guide Merlin Power Systems Unit 4, Cabot Business Village Holyrood Close Poole, Dorset BH17 7BA T: +44 (0) 1202 697979 F: +44 (0) 1202 691919 www.merlinpowersystems.com...

  • Page 2: Table Of Contents

    As the Merlin SmartGauge significantly differs from most battery monitoring equipment, please take time to carefully read this manual in order to understand the correct method of installation and user functions. Failure to do so may result in permanent damage to the SmartGauge and/or other electrical systems.

  • Page 3: Main Smartgauge Features

    State of Charge Values. SmartGauge uses just two wires to monitor the battery. Proprietary test methods are employed by the SmartGauge to generate data. This data is then compared to detailed computerised battery models.
  • Page 4 Compatibility (EMC) Directive 89/336/EEC. SmartGauge complies with RoHS (Reduction of Hazardous Substances) Directive 2002/95/EC. SmartGauge contains no Lead. At the end of life, SmartGauge should be disposed of as normal electrical waste. SmartGauge has been tested to and surpasses ISO-7637-2 for use on vehicles.

  • Page 5: Quick Start Guide

    Failure to do so may result in permanent damage to the SmartGauge and/or other electrical systems.
  • Page 6 2. An 18 gauge (AWG) positive sense wire from the B1 terminal on SmartGauge to the battery positive post of the main battery bank. This wire must be fused at 3 amps with the fuse holder installed as close to the battery as possible –...
  • Page 7 The off load terminal voltages will also be very similar to flooded wet cell batteries. If your AGM batteries are of this type then SmartGauge should be set to battery type 1.

  • Page 8: Smartgauge Installation Basics

    SmartGauge cannot be used on a mixed installation of both 12 and 24 volt supplies together. 3. Battery 1 and Battery 2 must share a common negative. It is not possible to install SmartGauge on two isolated battery systems or on two-battery systems with a common positive.

  • Page 9: Initial Start-Up

    SmartGauge will then display “SC” whilst it performs a System Check of the system battery voltage. SmartGauge will then display “SC12” or “SC24” indicating that it has detected either a 12 or 24 volt system. A chart at the end of this manual shows details of the expected display during a first time power up.
  • Page 10 In the event of power failure or interruption, the SmartGauge will retain most settings in memory. On re-application of power, the unit it will continue to operate as before except for the following: 1.

  • Page 11: Basic Monitor Use

    LED will light up to indicate the engine battery voltage is currently being displayed. To return to the primary bank, press VOLTS or STATUS. If the SmartGauge unit is left alone for 2 minutes, it will go into sleep mode. This is a power saving feature.

  • Page 12: Set-Up Menu - Introduction

    When in the set-up menu, the PGM/Batt 2 LED will flash. All battery monitoring ceases while the SmartGauge is in Set-Up Mode. For this reason, the user gets 2 minutes to set-up each parameter. If the two minutes is exceeded, the current selection in the display window is written to SmartGauge memory, and the unit reverts back to monitoring the batteries.

  • Page 13: Set Up Menu – Battery Types

    The off load terminal voltages will also be very similar to flooded wet cell batteries. If your AGM batteries are of this type then SmartGauge should be set to battery type 1.

  • Page 14: Set Up Menu – Charge Status

    SmartGauge Installation and User Guide 5.2 Set-Up Menu – Charge Status On initial set-up, SmartGauge defaults to a charge status of 75%. This is highly unlikely to match the actual charge status of the batteries being monitored. There are 4 simple ways in which this can be corrected: 1.

  • Page 15: Set-Up Menu – Primary Alarms

    This means that no matter what one does, SmartGauge will not allow this value to be set lower than the activation voltage. Pressing the SET button will write the value to memory.
  • Page 16 Merlin Power Systems version: 2.0.2 SmartGauge Installation and User Guide If a high voltage alarm was set then the procedure remains identical except the upper voltage trip point is the voltage which the battery voltage will have to rise to in order to activate the alarm.
  • Page 17 Note that this timed period is approximate. The timed period and the display will be accurate to within about 10%. Also, note that internally SmartGauge counts in seconds whereas the display only shows the minutes.

  • Page 18: Set-Up Menu – Secondary Alarms

    5.5 Set-Up Menu – Secondary Alarms The purpose of the secondary alarm is to activate an external alarm output, perhaps to sound an audible warning device or warning light in the event of SmartGauge generating one of its several error codes.

  • Page 19: Set-Up Menu – Defeating Error Codes

    5.7 Set-Up Menu – Displays There are three display modes available in SmartGauge. The modes apply whether the display is showing volts or charge status. The default factory setting displays for 2 minutes then goes into sleep mode. This mode is signified in the setup menu as “dt t”...

  • Page 20: Set-Up Menu – Display Brightness

    1 when 8 is reached. You will see the brightness change as you scroll through the values. When you find the brightness level that best suits your environment, press the SET button. The display will flash to show the value has been stored then SmartGauge will move on to the final item in the set-up menu.
  • Page 21 “E01” – Power was lost and reapplied. If power to SmartGauge is lost, when it is reapplied SmartGauge has no way of knowing how long power was lost or know what has happened to the batteries in the meantime. Therefore “E01”...

  • Page 22: Reset To Factory Defaults

    7.0 Reset to Factory Defaults Circumstances such as change of battery technology, or the need to override a menu lock, require that the SmartGauge is returned to its Factory Default state. To return the monitor to its default settings: 1. Disconnect the power feed to SmartGauge (pull the fuses in each feed wire out).

  • Page 23: Warranty

    SmartGauge Installation and User Guide 9.1 Warranty SmartGauge is warranted to be free of workmanship defects for a period of 2 years. In the event of a warranty claim, please contact Merlin Customer Service for a return authorization. Exclusions to this warranty include: 1.
  • Page 24 Merlin Power Systems version: 2.0.2 SmartGauge Installation and User Guide Page 24...
  • Page 25 Merlin Power Systems version: 2.0.2 SmartGauge Installation and User Guide Page 25...

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