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VE. Bus BMS with Skylla ip44 via Venus GX

If I connect a VE. Bus BMS (connected to Victron Smart LiFePO4) and a Skylla IP44 to a Venus GX, will the BMS be able to control (disconnect/connect) the charger without additional devices (remote disconnect)? Or, must I use the BMS charge disconnect output?


Paul asked
s_v Simbora commented ·

1 Answer

Skylla-IP44 Battery Charger 12/60(1+1)

On the Victron Energy Skylla-IP44 Battery Charger 12/60(1+1) 120-240V with the 60 Amp Output I assume that this is controllable with the Remote Panel and that the Seven (7) Stage Charge Profile will be followed.

On the second Output of 3 Amps for a Starting Battery will a similar multi-stage Charge Profile also be followed? Or, will that output be continuously at 3 Amps? Does it ever shut this output off when Starting Battery is fully charged?

Galileo asked

0 Answers

Skylla-I programming?

Is the Skylla-I programmable via some software tool, or are settings limited to those available via the DIP switches and dials? I ask because I'm struggling to figure out how to use it to charge and maintain a system with LFP batteries.

The pre-programmed LFP setting uses a voltage (3.55vpc) that is higher than I want, especially considering that the minimum absorb time is 2 hrs, which is also too long. On the Multi and Quattro this can be worked around using the Force to Float assistant, but it doesn't appear that there is an equivalent for the Skylla-i.

I have also looked at the Modbus registers and there doesn't appear to be any control that way either.

It looks like the only control is to use the BMS to shut off the Skylla completely, but that defeats one big reason to have the product in the first place, which is to carry loads when their is mains power available. The particular application is a boat that can be on mains power for extended time, and I want the loads carried by the Skylla rather than gratuitously cycling the batteries.

That brings up yet another thing I am struggling with which is the criteria by which the charger re-enters bulk/absorb. It is close enough to the Float voltage that I fear varying loads trigger it frequently, resulting is LFP batteries stored at full charge rather than a reduced charge.

With sufficient programming flexibility, this can all be worked around, but the Skylla-i appears pretty fixed in it's ways.

Any suggestions for workaround, or things I have missed?

twistedtree asked
PetaJoule edited ·

1 Answer

Add a Skyll I Charger to MultiPlus Combi

Hello,


I'm right now installing a Multiplus 5000 24/5000 and Victron Lithium batteries 600Ah/24V (6 12.8 V 200Ah Lithium Smart)

Can I add an extra Skylla I Charger later on if needed?


PatrikOls asked

0 Answers

Skylla-IP44 12/60 Chargers stuck not charging until power cycled - no faults shown

Speaking of firmware issues... I run a pair of Skylla-IP44 12/60 chargers, synced, driving a 750 AH FLA battery bank. These are currently being powered by shore power (120 VAC).

I visited our ship today, and noticed that the chargers were not charging the battery bank. All voltmeters were reading ~12.4 volts and the charge current was zero. No faults were being flagged, and everything was fully powered. The chargers indicated they were in absorption mode.

Power cycling the chargers resulted in full charging current immediately.

@mvader (Victron Energy Staff) @Daniël Boekel (Victron Energy Staff)

The chargers are both running firmware v1.05, the CCGX v2.33, the Batter Monitor v3.10, and the Skylla-i Control has at least v1.03 (for the max input current fix for dual chargers).

Please let me know what other details I can provide such that the root cause can be identified and a firmware fix released.


Thanks,

Allan.

Before Monitor

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Before Charger A

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Before Charger B

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Before Control

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[image]

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After Monitor

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After Charger B

[image]

Allan Yates asked
Allan Yates answered ·

4 Answers

Skylla IP44 - User relay programming

I am trying to program my Skylla IP44 I just bought, especially the User Relay. In the manual, p.7 par. 2.5.4. it states "The user relay is triggered by an under-voltage situation." But then it goes on to give 9 different options for relay modes.

How does the first statement tie in with the different modes? If I choose mode #7(Battery voltage high) how will this relay behave? Does the first statement not apply then anymore?

It seems very confusing and the literature seems to contradict itself. Or am I interpreting it wrong?

Please help.

s_v Simbora asked
s_v Simbora commented ·

1 Answer

Skylla IP44 in power supply mode.

We are running a Skylla IP44 in power supply mode. On the load side we have a battery and an electronic device. The battery is protected by a breaker and when this is switched off we experience a voltage drop on the output, resulting the connected load to switch off. I my head the output voltage should stay steady in Power supply mode. Any settings to change or is this how it Works?

Lars H asked
Lars H answered ·

2 Answers

Disabling the "Refresh" for the Skylla-IP44 - Possible?

I have the Skylla IP44 connected to lithium batteries, and have customized the charging profile accordingly. To avoid unnecessary cycling of the battery, how do I disable the Skylla from "refreshing" the battery every week? This weekly refresh is great for flooded batteries, but is completely unneeded and even detrimental for lithium. Yet, it is still included in the lithium CC/CV mode. Can this be disabled?

SolarSean asked
SolarSean commented ·

1 Answer

Additional relays for Skylla-IP44?

Is there any method to add more relays to a Skylla-IP44 charger? I have the onboard relay to trigger a fault LED in the case of a charger fault. However, I would like to have a relay drive a battery vent fan as well (fan on when charger charging). There are a couple of other ways I could accomplish this, but a relay off the charger would be the cleanest.



Thanks,

Allan.

Allan Yates asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

Safe to parallel secondary "starter" output from two Skylla-IP44?

I have two Skylla-IP44 (1+1) units. They are synchronised over the CAN bus, and have their main outputs paralled into a 740 AH battery bank. I want to make use of the 3A isolated output on each to trickle charge some starter motor batteries.

While one secondary output to a given starter motor makes the most sense, would there be any harm done if both the secondary outputs from both chargers were connected to the same starter battery (with both supply charging current at the same time)?


Thanks,


Allan.

Allan Yates asked

0 Answers

Is it ok to use Skylla 48v charger on Lithium ion phosphate batteries?

Hello all,

I was hoping to have increased the size of my system before winter kicked in, alas this hasn't happened.


So I need a charger that will charge my lead 48v Gel bank of batteries and will also be able to charge my new 48v lithium ion phosphate pack when I get it. I will be getting a 240v supply from a diesel generator.


Many thanks

Simon



OffGridFarmer asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

2.33 CCGX firmware and VE.Can devices detection

Firmware 2.32 corrected wifi loss and that was good.

Now I have the following problem for a few time and I suspect release 2.33.

I have a full "On-line" setup, where the multi is inverter only and a Skylla is charging from micro hydro OR, in summer, from generator if the solar panel+BlueSolarMPPT is not sufficient.

Before I start the generator, I switch the Skylla off until it is seen on the CCGX and the power limit can be accounted for. Then, I switch the Skylla on and everything is fine.

Now (2.33 ?) the Skylla is no longer found/seen by the CCGX when the generator starts. It's always listed as "deconnected". I have to manually reboot the CCGX for the Skylla to be listed.

If I don't reboot the CCGX, the Skylla starts at maximum current and overloads the generator.

No matter how long I wait with the Skylla powered and switched off, it never gets seen by the CCGX until rebooted.

Max_B asked
Max_B commented ·

1 Answer

Paralleled Skylla-i

I am confused about paralleling Skylla-i devices. The Skylla manual says you can not parallel two and three output models. However all the Skylla models are two or three output, which means none can be paralleled. This can't be correct, can it? I want to parallel two 24/100 units, so which models, if any, can do that?

twistedtree asked
twistedtree answered ·

6 Answers

Using Pheonix Inverters and Skylla Chargers on a CAN-bus

Good day

In your manual, for Phoenix inverters 3K/5K, you mention that the inverters can be ordered as 120V/60Hz on request. Can we order a 5KVA Phoenix inverter as 120VAC selectable for 50 or 60Hz?

We want to use three of these inverters in a wye configuration 3*115VAC/208VAC.

We want to use an additional three of these inverters in a wye configuration 3*230VAC/400VAC as a second 3 phase output.

What is the peak power for 20 min at 65Celcius, for these inverters?

Do you have any MTBF data, for these inverters?

Can all 3+3 inverters all be connected on the same VE-bus and then converted to VE-can or must each three be connected on a separate VE-bus and each group (of three inverters) converted with a seperate VE-bus to VE-can module.

We also want to connect three Skylla-i (1+1) chargers to VE-can.

Can all the above operate together on a common NMEA 2000 can-bus?

Thank you in advance
Dion

DIONYSIOS KOUTSOUVELIS asked
DIONYSIOS KOUTSOUVELIS answered ·

1 Answer

Should a Skylla-i GX light up and show in VRM when connected to a CCGX?

Should a Skylla-i GX control unit light up and show in VRM when connected to a CCGX, even if the Skylla-IP44 is not connected? I just purchased a Skylla-i GX control unit as an addition to my Victron system. For an initial test, as I am not at the ship, I took the CCGX (which I have out of the ship right now) and connected it to the Skylla-i GX. These are the only two units on the V.CAN network (with terminators) and no other devices connected to the CCGX. There are no lights showing at all on the Skylla-i GX and it does not appear on the device list in VRM.

I'm wondering if this is to be expected, as I don't have the Skylla-IP44 battery chargers connected, or if I have a defective unit.



Thanks,


Allan.

Allan Yates asked
Max_B answered ·

2 Answers

Thread size for Skylla-i Control GX panel mounting?

Does anybody know the size of fastener for the four corners? None of the diagrams mention this, they just give the diameter of the hole in the plastic into which the threaded insert is placed. This is the same panel as for the Battery Alarm GX and the Digital Multi Control GX (plastic).


Thanks,


Allan.

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Allan Yates asked
Allan Yates answered ·

4 Answers

Skylla i charger always stay the state of "abs"

As the title says, the voltage of my battery is only 22.5V, but the charger keeps the state of "abs". I have tried to repower the charger and reset the controller, but still stay the same state. Please help.....

cddxcdx asked
cddxcdx commented ·

1 Answer

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