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6. Maintenance

The MultiPlus-II 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.

MultiPlus-II 48V 3kVA 120V

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Maintenance

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Summary of Contents for MultiPlus-II

Page 1: ...MultiPlus II 48V 3kVA 120V Rev 01 02 2021 ENGLISH ...

Page 2: ...onnection of battery cables 11 4 3 Connection of the AC cabling 12 4 4 Optional Connections 13 4 4 1 Remote Control 13 4 4 2 Programmable relay 13 4 4 3 Programmable analog digital input output ports 13 4 4 4 Voltage sense connection terminal J see appendix A 13 4 4 5 Temperature sensor connection terminal J see appendix A 14 4 4 6 Parallel Connection 14 4 4 7 Three phase operation 14 5 Configurat...

Page 3: ...C APPENDIX C Parallel connection 29 D APPENDIX D Three phase connection 30 E APPENDIX E Charge algorithm 31 F APPENDIX F Temperature compensation 32 G APPENDIX G Dimensions 33 MultiPlus II 48V 3kVA 120V ...

Page 4: ...ions The installation shall be in accordance with the Canadian Electrical Code Part 1 The wiring methods shall be in accordance with the National Electrical Code ANSI NFPA 70 This product is a safety class I device supplied with a ground terminal for safety purposes Its AC input and or output terminals must be provided with uninterruptible grounding for safety purposes An additional grounding poin...

Page 5: ...pacity of the alternative source Where peak power is often required only for a limited period the MultiPlus II will make sure that insufficient AC mains or generator power is immediately compensated for by power from the battery When the load reduces the spare power is used to recharge the battery Programmable relay The MultiPlus is equipped with a programmable relay The relay can be programmed fo...

Page 6: ...y extended in order to fully charge the battery Preventing damage due to excessive gassing the BatterySafe mode If in order to quickly charge a battery a high charge current in combination with a high absorption voltage has been chosen damage due to excessive gassing will be prevented by automatically limiting the rate of voltage increase once the gassing voltage has been reached Less maintenance ...

Page 7: ...rid code compliance by selecting the appropriate grid code country setting with the VEConfigure tool Once set a password will be required to disable grid code compliance or change grid code related parameters Depending on the grid code there are several reactive Power control modes Fixed cos φ Cos φ as function of P Fixed Q Q as function of input voltage Reactive Power capability If the local grid...

Page 8: ... DC consuming devices can cope with These devices must be disconnected before additional charging takes place 3 3 2 Forced absorption Under certain circumstances it can be desirable to charge the battery for a fixed time at the absorption voltage level In Forced Absorption mode the MultiPlus II will charge at the normal absorption voltage level during the set maximum absorption time The absorption...

Page 9: ...h is set to on after the three LED sequence has finished the charger will switch to Float d If the switch is has not been moved the MultiPlus II will remain in charger only mode and switch to Float 3 4 LED Indications LEDs off LEDs blinking LEDs illuminated Inverterting The inverter is on Inverter power is supplied to the load The inverter LED is on Overload pre alarm The nominal output of the inv...

Page 10: ...ED is on Overload pre alarm and low battery pre alarm The battery is nearly exhausted and the nominal output of the inverter is exceeded The overload and low battery LEDs are both blinking alternately Ripple pre alarm The ripple voltage on the battery terminals is too high The overload and low battery LEDs are both blinking simultaneously Ripple alarm The inverter has switched off due to excess ri...

Page 11: ...nd the charger operates in absorption mode The absorption LED is on Float charging The mains voltage is switched through and the charger operates in float mode The float LED is on Equalize charging The mains voltage is switched through and the charger operates in equalize mode The bulk and absorption LED are both blinking PowerControl The AC input is switched through The AC output current is equal...

Page 12: ... required additional current The mains on LED is on and the inverter LED is blinking For more error codes see section 7 3 For the latest and most up to date information about the blink codes please refer to the Victron Toolkit app Click on or scan the QR code to get to the Victron Support and Downloads Software page MultiPlus II 48V 3kVA 120V Page 9 Operation ...

Page 13: ...ance between the product and the battery to a minimum in order to minimize cable voltage losses For safety purposes this product should be installed in a heat resistant environment You should prevent the presence of e g chemicals synthetic components curtains or other textiles etc in the immediate vicinity Each system requires a method of disconnecting the AC and DC circuits If the overcurrent pro...

Page 14: ...contact with eyes Study all battery manufacturer s specific precautions such as removing or not removing cell caps while charging and recommended rates of charge Clean battery terminals Be careful to keep corrosion from coming in contact with eyes Study all battery manufacturer s specific precautions such as removing or not removing cell caps while charging and recommended rates of charge MARINE U...

Page 15: ...uninterruptible grounding point for safety purposes The MultiPlus II is provided with a ground relay relay H see appendix B that automatically connects the Neutral output to the chassis if no external AC supply is available If an external AC supply is provided the ground relay H will open before the input safety relay closes This ensures the correct operation of an earth leakage circuit breaker th...

Page 16: ...is connected that may only operate if AC voltage is available on AC in 1 e g an electric boiler or an air conditioner The load on AC out 2 is disconnected immediately when the MultiPlus II switches to battery operation After AC power becomes available on AC in 1 the load on AC out 2 will be reconnected with a delay of approximately 2 minutes This to allow a genset to stabilise 4 4 Optional Connect...

Page 17: ...nd the MultiPlus II units Place the MultiPlus II units close to each other but allow at least 10cm for ventilation purposes under above and beside the units It is essential the negative battery terminal between the units is always connected A fuse or circuit breaker is not allowed UTP cables must be connected directly from one unit to the other and to the remote panel Connection or splitter boxes ...

Page 18: ...r on off on Battery charge curve four stage adaptive with BatterySafe mode Charging current 100 of the maximum charging current Battery type Victron Gel Deep Discharge also suitable for Victron AGM Deep Discharge Automatic equalisation charging off Absorption voltage 57 6 V Absorption time up to 8 hours depending on bulk time Float voltage 55 2 V Storage voltage 52 8 not adjustable Repeated absorp...

Page 19: ...ices in parallel create a split phase system with a separate autotransformer see VE autotransformer datasheet and manual create a 3 phase system The standard product settings are for standalone operation For parallel three phase or split phase operation see section 5 3 AES Automatic Economy Switch If this setting is turned on the power consumption in no load operation and with low loads is decreas...

Page 20: ...ion The output voltage of some small generator sets is too unstable and distorted for using this setting the MultiPlus II would continually switch to inverter operation For this reason the setting can be turned off The MultiPlus II will then respond less quickly to AC input voltage deviations The switchover time to inverter operation is consequently slightly longer but most equipment most computer...

Page 21: ...systems with a maximum of three Multis parallel or three phase operation can be configured in a simple manner The software can be downloaded free of charge at www victronenergy com 5 3 2 VE Bus System Configurator For configuring advanced applications and or systems with four or more Multis VE Bus System Configurator software must be used The software can be downloaded free of charge at www victro...

Page 22: ...The MultiPlus II 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 MultiPlus II 48V 3kVA 120V Page 19 Maintenance ...

Page 23: ...nment or reduce the load Low battery and overload LEDs flash intermittently Low battery voltage and excessively high load Charge the batteries disconnect or reduce the load or install higher capacity batteries Fit shorter and or thicker battery cables Low battery and overload LEDs flash simultaneously Ripple voltage on the DC connection exceeds 1 5Vrms Check the battery cables and battery connecti...

Page 24: ...an incorrect level too high Set the absorption voltage to the correct level The float voltage is set to an incorrect level too high Set the float voltage to the correct level Poor battery condition Replace the battery The battery temperature is too high due to poor ventilation excessively high environmental temperature or excessively high charging current Improve ventilation install batteries in a...

Page 25: ...vice can perform charging operation In principle all other LEDs must be off If this is not the case the code is not an OK code However the following exceptions apply The special LED indications above can occur together with the OK codes The low battery LED can function together with the OK code that indicates that the device can charge 7 3 2 VE Bus error codes A VE Bus system can display various e...

Page 26: ...1 14 17 Bulk LED on Absorption LED off flashing on Float LED off 18 21 24 flashing 19 22 25 on 20 23 26 Bulk LED Absorption LED Float LED Code Meaning Cause solution 1 Device is switched off because one of the other phases in the system has switched off Check the failing phase 3 Not all or more than the expected devices were found in the system The system is not properly configured Reconfigure the...

Page 27: ...ed 24 Switch over system protection initiated Should not occur in correctly installed equipment Switch all equipment off and then on again If the problem recurs check the installation Possible solution increase lower limit of AC input voltage to 110 VAC factory setting is 90 VAC 25 Firmware incompatibility The firmware of one the connected devices is not sufficiently up to date to operate in conju...

Page 28: ...A peak 70Arms for 1sec CHARGER AC Input Split phase 190 280 VAC 45 65 Hz Single phase 95 140 VAC 45 65 Hz Charge voltage absorption 57 6 V Charge voltage float 55 2 V Storage mode 52 8 V Maximum battery charge current 4 35 A Battery temperature sensor Yes GENERAL Auxiliary output Yes 50 A External AC current sensor optional 100 A Programmable relay 5 Yes Protection 2 a g VE Bus communication port ...

Page 29: ...3 1 Can be adjusted to 50 Hz 2 Protection key a output short circuit b overload c battery voltage too high d battery voltage too low e temperature too high f 120 VAC on inverter output g input voltage ripple too high 3 Non linear load crest factor 3 1 4 At 25 C ambient 5 Programmable relay which can be set for general alarm DC under voltage or genset start stop function AC rating 120V 4A DC rating...

Page 30: ...positive connection H M8 battery minus connection I switch 1 On 0 Off charger only J Connector for remote switch Short to switch on K 2x RJ45 VE BUS connector for remote control and or parallel three phase operation L External current sensor M Terminal for top to bottom 1 12V 100mA 2 Programmable contact K1 open collector 70V 100mA 3 External ground relay 4 External ground relay 5 Aux input 1 6 Au...

Page 31: ...Appendix B APPENDIX B Block diagram See table in Chapter 4 2 Recommended DC fuse MultiPlus II 48V 3kVA 120V Page 28 APPENDIX B Block diagram ...

Page 32: ...Appendix C APPENDIX C Parallel connection MultiPlus II 48V 3kVA 120V Page 29 APPENDIX C Parallel connection ...

Page 33: ...Appendix D APPENDIX D Three phase connection MultiPlus II 48V 3kVA 120V Page 30 APPENDIX D Three phase connection ...

Page 34: ...s part of the calculated absorption time Absorption The absorption period is dependent on the bulk period The maximum absorption time is the set Maximum Absorption time Float Float voltage is applied to keep the battery fully charged Storage After one day of float charge the output voltage is reduced to storage level This is 13 2 V resp 26 4 V for 12 V and 24 V charger This will limit water loss t...

Page 35: ...tages 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 MultiPlus II 48V 3kVA 120V Page 32 APPENDIX F Temperature compensation ...

Page 36: ... 230 435 40 5 1 6 4x 49 4 98 87 5 87 5 32 5 55 6 2 3x Rev00 PMP482305100 MultiPlus II 48 3000 35 50 120V Dimension Drawing MultiPlus II Dimensions in mm D E F C 1 2 3 4 B A 3 2 1 5 C D 4 6 7 8 A B 8 7 6 5 F E MultiPlus II 48V 3kVA 120V Page 33 APPENDIX G Dimensions ...

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