multiplus_faq
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multiplus_faq [2019-01-21 11:20] – [Disqus] ictbeheer | multiplus_faq [2019-12-01 23:50] – updated ve-configure to veconfigure guy_stewart | ||
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Warning: changing these settings will allow to feed-through current that may be of insufficient quality for the electrical requirements of your equipment. | Warning: changing these settings will allow to feed-through current that may be of insufficient quality for the electrical requirements of your equipment. | ||
- | For information on VE-Configure | + | For information on VEConfigure |
- | ====== 1. In the “Grid” tab of VE-Configure: ====== | + | ====== 1. In the “Grid” tab of VEConfigure: ====== |
| | ||
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**AC low disconnect: | **AC low disconnect: | ||
- | On generators where the output voltage drops under load, setting this value to a higher value can help solve shutdowns on overload. | + | On generators where the output voltage drops under load, setting this value to a higher value can help resolve inverter |
- | **AC Low connect:** minimum value: at this value or any higher value, | + | The reason |
+ | If the generator is disconnected under load (either due to low-voltage disconnection, | ||
+ | |||
+ | As overload is driven by current, not power, this can result in an overload. | ||
+ | |||
+ | By increasing this minimum voltage level, you tell the inverter/ | ||
+ | |||
+ | **AC Low connect:** minimum value: at this value or any higher value, the MultiPlus will reconnect after having disconnected (default = 187Vac). | ||
===== 1.4 Maximum voltage levels ===== | ===== 1.4 Maximum voltage levels ===== | ||
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===== 1.5 Loss of mains detection (LOM) ===== | ===== 1.5 Loss of mains detection (LOM) ===== | ||
+ | |||
+ | Loss of mains detection will push and pull at voltage and frequency to see if there is still a generating source. This process can cause issues with some generators, or high impedance connections to generators. | ||
+ | |||
+ | For large and stable Generators Type B LOM will work, and is safer. | ||
+ | However, if you are experiencing issues with voltage, frequency or power fluctuations, | ||
+ | |||
+ | **Disabling LOM** | ||
+ | |||
+ | Disabling the LOM on an input connected to the grid is only allowed when other external safety equipment is installed. | ||
+ | Disabling the LOM on an input connected to generator can be done, but then other methods / warning signs / physical lockout safety measures must be provided. Ensuring that any installer that will work on the generator, wiring or system, will make sure to also switch off or otherwise disconnect the Inverter/ | ||
For Full information on Loss of Mains detection, please see [[ve.bus: | For Full information on Loss of Mains detection, please see [[ve.bus: | ||
- | ===== Example configuration in VEConfigure | + | **Example configuration in VEConfigure** |
* A generator that requires LOM to be disabled. | * A generator that requires LOM to be disabled. | ||
* Generator on AC in 1, and grid on AC in 2, as recommended. | * Generator on AC in 1, and grid on AC in 2, as recommended. | ||
- | {{ :ve.bus:grid-code.png?direct |}} | + | {{::lom_generator.jpg?direct&400|}} |
- | + | ====== 2. In the “General” tab of VEConfigure: ====== | |
- | ====== 2. In the “General” tab of VE-Configure: ====== | + | |
{{:: | {{:: | ||
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===== 2.2 AC Input Current Limit ===== | ===== 2.2 AC Input Current Limit ===== | ||
- | The charger on the Multiplus is very powerful. If you have an existing generator that is not able to supply the maximum charging current of the Multi, you will need to adjust the AC Input Current Limit in the General Tab of VE-Configure. | + | The charger on the Multiplus is very powerful. If you have an existing generator that is not able to supply the maximum charging current of the Multi, you will need to adjust the AC Input Current Limit in the General Tab of VEConfigure. |
A reasonable starting point for the AC Current input limit is 80% of the generator capacity in Watts. For example: | A reasonable starting point for the AC Current input limit is 80% of the generator capacity in Watts. For example: | ||
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- | ====== 3. In the " | + | ====== 3. In the " |
{{: | {{: | ||
- | **Derating of the power factor** | + | ===== 3.1 Derating of the power factor |
Some generators have a waveform which makes it difficult to charge with the normal charge mechanism. Through activating the " | Some generators have a waveform which makes it difficult to charge with the normal charge mechanism. Through activating the " | ||
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This leading or lagging power factor will have the effect of demanding more kVa from the generator for the same or less DC Watts delivered to the batteries. You may need to further reduce the DC Current Limit in the Charger tab of VEConfigure if the generator continues to overload after changing this setting. | This leading or lagging power factor will have the effect of demanding more kVa from the generator for the same or less DC Watts delivered to the batteries. You may need to further reduce the DC Current Limit in the Charger tab of VEConfigure if the generator continues to overload after changing this setting. | ||
+ | |||
+ | Effectively, | ||
**Important note:** | **Important note:** | ||
- | A detailed description of all settings is available in the VE-Configure | + | A detailed description of all settings is available in the VEConfigure |
+ | |||
+ | ====== 4. In the “Inverter” tab of VEConfigure: | ||
+ | |||
+ | ===== 4.1 PowerAssist ===== | ||
+ | |||
+ | The [[https:// | ||
+ | |||
+ | If you have a small generator and have trouble getting connected or staying connected, Disable PowerAssist to allow the device to reduce the AC input current limit. | ||
+ | |||
+ | |||
+ | |||
+ | ====== Still not connecting? ====== | ||
+ | |||
+ | If the unit is still not connecting, switch the Multi over to Charger only mode. | ||
+ | |||
+ | Try with a different generator. | ||
+ | |||
+ | As troubleshooting and correcting these faults have serious safety implications, | ||
+ | |||
+ | There can be issues with generators with Residual Current Devices (RCD' | ||
+ | |||
+ | Simplify the AC wiring, With everything safely shut down and tested for voltage, disconnect the AC-Output active, neutral and earth. Direct wire in the generator connections, | ||
+ | |||
+ | If there is still no connection, contact your dealer or distributor. Tell them the steps that you have taken already to attempt to get it to work and they can help from there. | ||
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[[https:// | [[https:// | ||
+ | |||
+ | [[https:// | ||
+ | ===== DISQUS ===== | ||
+ | ~~DISQUS~~ |
multiplus_faq.txt · Last modified: 2023-02-16 01:50 by guy_stewart