Search found 2238 matches

by weber
Yesterday, 08:00
Forum: Batteries, charging, management and monitoring
Topic: Pairing up a battery inverter with a grid tie inverter...
Replies: 3
Views: 33

Re: Pairing up a battery inverter with a grid tie inverter...

This can be done, and is referred to as "AC-coupling" your PV array (Google it). And yes, the battery inverter certainly has to have been designed as an inverter/charger. Whether it works or not depends strongly on details of the implementation of the two inverters -- details which are not usually g...
by weber
Mon, 13 Nov 2017, 21:46
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Referring to the DSP <-> SCC comms in Coulomb's post above: We implement dynamic current control by occasionally sending an unsolicited RI packet in place of a GS packet. But as well as sending the required current setting in the appropriate field of the RI packet, we have to put a deliberate bad va...
by weber
Sat, 11 Nov 2017, 07:52
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Do I have to sacrifice the USB( serial port) to BMS connectivity? Or Can I connect BMS to one inverter and ICC to another inverter. Does the BMS have to connect to master only or can be connected to slave - The master and slave in Axpert change dynamically depending which one was switched first Tha...
by weber
Fri, 10 Nov 2017, 08:02
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Hy, I have connected 2 5048ms inverters in parallel, and i need to set up the charging current of the inverters. Maximum charging current for my batteries is 40amps. I need to set up each inverter to 20amp resulting a total 40amp? Or only set up the master unit to 40amp? Thx in advance You need to ...
by weber
Wed, 08 Nov 2017, 07:59
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: Patched Firmware 72.70c

Hi, I am running 3 x inverters in parallel. They are currently running 72:70B - (4:10) Running on lead acid batteries. Happy to test new version. I assume it is the dsp_bc1? Also running Inverter control Centre on my system. Anything I need to check before upgrading. However what will be the main b...
by weber
Tue, 07 Nov 2017, 11:25
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Beta-versions of Patched Firmware 72.70c with Dynamic Current Control After 5 weeks, and about 18 cycles of analysis, design, programming and testing, Coulomb and I are finally making the result of our latest PIP-patching effort available for those brave and kind souls who are willing and able to t...
by weber
Thu, 02 Nov 2017, 06:08
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Hi Frnandu, 1. When you change output source priority (parameter 01) from UTI to SBU (or SOL), the PIP will only change back to battery mode when the battery voltage has been higher than or equal to the back-to-battery setting (parameter 13) for 10 minutes. In the next release of our patched firmwar...
by weber
Mon, 30 Oct 2017, 19:55
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

i own a PIP 4048 MSD and i wanted to know if the modified firmware is suitable and for this version because the bulk current with the original firmware configuration is just some seconds Hi vulcanescu35. Thanks for your kind words. Sadly no, we do not have access to a firmware update file for the M...
by weber
Fri, 27 Oct 2017, 08:25
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

paulvk wrote:
Fri, 27 Oct 2017, 07:19
I have the eSmart 3 130volt MPPT charger working with my PIPs ... it is even providing a fix for the tendency of the solar charger in the PIPs to cut off early from bulk charge ...
Just in case anyone doesn't know, our patched firmware for the PIP also fixes that problem.
by weber
Sat, 14 Oct 2017, 16:36
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

You make a good point -- that you might well want it to go to zero current if communication was lost -- and indeed that's what the TCCharger does. But up until now, we have been writing the PIP patches so that it falls back to whatever is set in the EEPROM, in other words, whatever was last set usin...
by weber
Sat, 14 Oct 2017, 14:40
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Hi andys. I'm afraid we really are working on dynamically setting the current, not the voltage. But it will not be limited to the values you can presently set. You will be able to set it to any number of (whole) amps from 0 to 140 inclusive. Our BMS has a bypass current of 0.65 amps, so in this way ...
by weber
Sat, 14 Oct 2017, 11:52
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Hacking the PIP/Axpert firmware to implement a dynamic charge current limit, has turned out to be more difficult than we hoped, but still not as difficult as it might have been. We still believe we can do it without having to patch the SCC firmware. I'll try to explain what we're attempting to do. I...
by weber
Mon, 09 Oct 2017, 14:07
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Progress has stalled on the firmware patches to implement a dynamic current limit. The timeout (as suggested by hennejg) is now working. We're presently using 20 seconds. And, as mentioned earlier, the modified MNCHGC command correctly controls AC charging without restarting it, but then the unmodif...
by weber
Mon, 09 Oct 2017, 13:51
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

A Problem could be that my PIP4048 is a HS not a MS. If I don't use Solar ..., can I ... use your Firmware? I mean using the PIP as [an AC] Battery charger :-) Hi dakoal, See the first note in red here: http://forums.aeva.asn.au/viewtopic.php?title=pip4048ms-inverter&p=64096&t=4332#p64096 In short,...
by weber
Sat, 07 Oct 2017, 22:38
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

I spent the day putting the patches into the hex file (at 10 new locations) and documenting them. Then I reflashed my PIP with the new hex file and confirmed that we had, at least, not broken the standard behaviour, including the MNCHGC command. Hoorah! I also confirmed that the new dynamic current ...
by weber
Fri, 06 Oct 2017, 19:50
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

Coulomb and I spent the day investigating the feasibility of a dynamic maximum charge current command. We believe we can implement it by adding new behaviour to the MNCHGC command, by using otherwise-unused values of its current argument (3 digits of amps), namely values of 500 or more. Such values ...
by weber
Fri, 06 Oct 2017, 08:00
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

The way I understand the power/charge management is supposed to work is that, at least once the battery is in float mode, and there is enough solar power, the solar power is "routed" directly via the DC bus from the SCC to the inverter. Maybe I got this completely wrong, If by "DC bus" you mean the...
by weber
Wed, 04 Oct 2017, 10:46
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

weber how do you measure open circuit voltage while the battery is still a member of a possibly charging or discharging pack? Hi andys. I never claimed to measure it. You will see that I refer to it as "estimated" every time I mention it. In short, we take the measured cell voltage and we subtract ...
by weber
Wed, 04 Oct 2017, 09:11
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

If we were to ask the EMUS BMS, it would like to control the charger's current/voltage through CAN. In absence of CAN support it can control a charger by slowly toggling it on/off. Now, the only way to turn off the PIP's charger is by cutting the solar power supply (my installation doesn't use the ...
by weber
Thu, 28 Sep 2017, 19:34
Forum: Members Machines
Topic: Weber and Coulomb's MX-5
Replies: 1672
Views: 239148

Re: Weber and Coulomb's MX-5

Today I finally got around to fixing one of Mexy's two known leaky cell monitoring units (CMUs). The other 220 are working fine. We originally used 20 V rated MOSFETs for switching the bypass resistors on the top of every cell. Occasionally one goes leaky and the cell monitoring unit starts drawing ...
by weber
Thu, 31 Aug 2017, 08:29
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 1860
Views: 168389

Re: PIP-4048MS inverter

* Will it even work with LiFePO4 cells which I naively just assumed to be the case? Don't know. * Is the bug present on the 24V models as well? Don't know. * Do you know of any resources (similar to this forum) dedicated to the 24V models? No. * Right now, I could probably make the switch to 48V an...
by weber
Thu, 31 Aug 2017, 07:56
Forum: Electric motors and controllers
Topic: Help on Zapi FH5082A and F06099 48Vdc motor controller
Replies: 6
Views: 208

Re: Help on Zapi FH5082A and F06099 48Vdc motor controller

Welcome tolubishop. Good on you for embarking on such a project. Advertisements such as FH5082 and F06099 suggest that these are both members of the H2 series. The H2 series manual can be found here: http://www.zapiinc.com/products/motor-controller/h-2 It should contain all the information you need....
by weber
Tue, 29 Aug 2017, 20:50
Forum: Charging Infrastructure
Topic: Where to source electrical hardware
Replies: 16
Views: 465

Re: Where to source electrical hardware

I would imagine you can put a lower current fuse in place of the existing 80 amp fuse? The pole or pillar fuse belongs to the electricity distributor. Only they can change it. You could just use a 40 A breaker for your main switch. But normally you won't want to do that because you will have some h...
by weber
Tue, 29 Aug 2017, 16:57
Forum: Batteries, charging, management and monitoring
Topic: PV Inverters and batteries
Replies: 18
Views: 560

Re: PV Inverters and batteries

I'm thinking the latter option - a 2.2 kW array, grid tie inverter, battery charger plugged into mains, 6 kWh battery (cheap salvage LiFePO4). I can then use the battery for anything I like, including a fast charger for my scooter :) Alternatively I can power a 2 kW 48 VDC to 240 VAC inverter which...
by weber
Tue, 29 Aug 2017, 15:54
Forum: Charging Infrastructure
Topic: Where to source electrical hardware
Replies: 16
Views: 465

Re: Where to source electrical hardware

Chris, To prevent fires, you also need to ensure that the contactor contacts can never carry continuous currents in excess of their 40 amp rating, sourced from either the inverter or the grid. There are various ways this can be done. If the sum of the ratings of the circuit breakers on all the load ...