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MultiPlus-II GX - Product Manual
1.
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Introduction
The Victron MultiPlus-II GX integrates the following elements:
A powerful MultiPlus-II inverter/charger
A GX card with a 2x16 character display
These elements come prewired, and preconfigured together inside a single unit. This simplifies installation, saving
time and money.
This document explains:
Features
Behaviour
Specifications
Limitations
Installation instructions
Troubleshooting steps
You must read it to understand how to use your product safely and reliably.
This manual applies to:
MultiPlus-II GX 48/3000/35-32
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Latest Documentation
You can quickly access the latest version of this manual online by visiting the following link:
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Or scanning this QR code with your phone:
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V
https://ve3.nl/MultiPlus-
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Summary of Contents for Victron Energie MultiPlus-II GX
- Page 1 MultiPlus-II GX - Product Manual Introduction The Victron MultiPlus-II GX integrates the following elements: A powerful MultiPlus-II inverter/charger A GX card with a 2x16 character display These elements come prewired, and preconfigured together inside a single unit. This simplifies installation, saving time and money.
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Page 2: Safety Instructions
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Safety Instructions Please read the documentation supplied with this product first, so that you are familiar with the safety signs and directions before using the product. This product is designed and tested in accordance with international standards. The product should be used for the designated application only. WARNING DANGER OF ELECTRICAL SHOCK The product is used in combination with a permanent energy source (battery). -
Page 3: Product Description
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V The ground conductor should be at least 4mm². If it can be assumed that the grounding protection is damaged, the product should be taken out of operation and prevented from accidentally being put into operation again; contact qualified maintenance personnel. Ensure that the connection cables are provided with fuses and circuit breakers. - Page 4 Automatic and uninterruptible switching In the event of a supply failure or when the generating set is switched off, the MultiPlus-II GX will switch over to inverter operation and take over the supply of the connected devices. This is done so quickly that operation of computers and other electronic devices is not disturbed (Uninterruptible Power Supply or UPS functionality).
- Page 5 Frequency shift When solar inverters are connected to the output of a MultiPlus-II GX, excess solar energy is used to recharge the batteries. Once the absorption voltage is reached, charge current will reduce and excess energy will be fed back into the mains.
- Page 6 ESS – Energy Storage Systems: feeding energy back into the grid When the MultiPlus-II GX is used in a configuration in which it will feed back energy into the grid it is required to enable grid code compliance by selecting the appropriate grid code country setting with the VEConfigure tool.
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Page 7: Operation
When the MultiPlus-II GX is switched off with the physical switch on the device or with the Remote on/off terminals, then the GX card is off as well. If you switch the MultiPlus-II GX remotely, using a Digital Multi Control, then the GX card will be remain powered. -
Page 8: Installation
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Lastly, when the inverter/charger switches itself off due to an alarm, such as low battery or overtemperature, then the GX Card will remained powered and functional as well. 6.2. Push button behaviour When the GX Card is on, pushing the button beside the screen will activate the backlight. The backlight will turn itself off... - Page 9 The MultiPlus-II GX is suitable for wall mounting. For mounting purposes, a hook and two holes are provided at the back of the casing (see appendix G). The device can be fitted either horizontally or vertically. For optimal cooling, vertical fitting is preferred.
- Page 10 manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Recommended battery capacity (Ah) 100–400 Recommended DC fuse 125 A Recommended cross section (mm²) per + and - connection terminal 0 – 5 m 35 mm² 5 – 10 m 70 mm² Remark: Internal resistance is the important factor when working with low capacity batteries. Please consult your supplier or the relevant sections of our book 'Energy Unlimited', downloadable from our website.
- Page 11 WARNING The MultiPlus-II GX is a safety class I product (supplied with a ground terminal for safety purposes). Its AC input and/or output terminals and/or grounding point on the inside of the product must be provided with an uninterruptible grounding point for safety purposes. see Appendix.
- Page 12 It is required to use identical units for three phase and parallel systems. In this case, as only one GX device is allowed per system, if you wish to parallel and/or three phase with a MultiPlus-II GX, you must find the same model MultiPlus-II to pair.
- Page 13 To assist with finding identical units, consider instead using MultiPlus-II for parallel and three phase systems, and an external GX device. Up to six units can be connected in parallel. When connecting a MultiPlus-II GX with MultiPlus-II in a parallel system, the following requirements must be met: WARNING It is essential the negative battery terminal between the units is always connected.
- Page 14 During setting of the charger, the AC input must be removed. 8.1. Standard settings: ready for use On delivery, the MultiPlus-II GX is set to standard factory values. In general, these settings are suitable for single-unit operation. WARNING Possibly, the standard battery charging voltage is not suitable for your batteries! Refer to the manufacturer's...
- Page 15 The solution is to increase the lower limit setting to 210VAC (the output of AVR generators is generally very stable), or to disconnect the MultiPlus-II GX from the generator when a generator stop signal is given (with help of an AC contactor installed in series with the generator).
- Page 16 Instead of the AES mode, the search mode can also be chosen. If search mode is 'on', the power consumption in no-load operation is decreased by approx. 70%. In this mode the MultiPlus-II GX, when operating in inverter mode, is switched off in case of no load or very low load, and switches on every two seconds for a short period. If the output current exceeds a set level, the inverter will continue to operate.
- Page 17 Factory setting: the maximum value (32 A). UPS feature If this setting is 'on' and AC on the input fails, the MultiPlus-II GX switches to inverter operation practically without interruption. The output voltage of some small generator sets is too unstable and distorted for using this setting – the MultiPlus-II GX would continually switch to inverter operation.
- Page 18 More load can only be supplied after the engine is up to speed. If this setting is 'on', the MultiPlus-II GX will start supplying extra power at a low generator output level and gradually allow the generator to supply more, until the set current limit is reached. This allows the generator engine to get up to speed.
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Page 19: Maintenance
The software can be downloaded free of charge at www.victronenergy.com Maintenance The MultiPlus-II GX does not require specific maintenance. It will suffice to check all connections once a year. Avoid moisture and oil/soot/vapours, and keep the device clean. Error Indications With the procedures below, most errors can be quickly identified. - Page 20 Check your batteries. NOTE: You can reset the error does not mode thus, the maximum bulk mode by switching off and back on the MultiPlus-II GX. operate. 'Bulk charging time of 10 hours is exceeded. The standard MultiPlus-II GX factory setting of the 'Bulk...
- Page 21 The charging Defective battery temperature sensor Disconnect the temperature sensor plug in the current drops MultiPlus-II GX. If charging functions correctly after to 0 as soon approximately 1 minute, the temperature sensor should as the be replaced.
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Page 22: Technical Specifications
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V the installation. Possible solution: increase lower limit of AC input voltage to 210 VAC (factory setting is 180 VAC) Firmware incompatibility. The 1) Switch all equipment off.2) Switch the device returning this firmware of one the connected error message on.3) Switch on all other devices one by one until devices is not sufficiently up to date to the error message reoccurs.4) Update the firmware in the last operate in conjunction with this... -
Page 23: Appendix B : Block Diagram
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Primary ground connection M6 (PE) battery positive connection. battery minus connection. switch -:On, 0:Off, =:charger only Terminals top to bottom: 12V 100mA Programmable contact K1 open collector 70V 100mA External ground relay + External ground relay – Aux input 1 + Aux input 1 –... -
Page 24: Appendix C : Parallel Connections
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Appendix C : Parallel Connections Additional condtions are required for parallel systems - please read further specific documentation here - https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems Appendix D : Three Phase Connections Additional condtions are required for three phase systems - please read further specific documentation here - https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems Appendix E : Charge Characteristic 24 / 26... -
Page 25: Appendix F : Temperature Compensation
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V 17.1. 4-stage charging: Bulk Entered when charger is started. Constant current is applied until nominal battery voltage is reached, depending on temperature and input voltage, after which constant power is applied up to the point where excessive gassing is starting (28.8 V resp. 57.6 V, temperature compensated). 17.1.1. -
Page 26: Appendix G : Dimensions
manual-multiplus-ii-gx-24Vand48V-3000and5000-230V Default output voltages for Float and Absorption are at 25 °C. Reduced Float voltage follows Float voltage and Raised Absorption voltage follows Absorption voltage. In adjust mode temperature compensation does not apply. Appendix G : Dimensions 26 / 26...
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