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ECO-WORTHY 48V 100Ah 5120Wh LiFePO4 Server Rack Battery

marionw said:
For a PACE BMS:
Dry contact 1-PIN1 to PIN2: normally open, closed during fault and protection;
Dry contact 2-PIN3 to PIN4: Normally open, low battery alarm closed.
Click to expand...
Did you ever try it on the E-W battery? Do you have the insert to the switch front terminals? I didn't see it supplied.
 
marionw said:
I haven't. You (or someone) could monitor the dry contacts while load testing (cell UVP etc) or charging (cell OVP) or low SOC.
Click to expand...
I need the little plug-in for me to play with it I don't want to just search shoving probes in there. There are some functions I can be enabled in the BMS I'm sure it has something to do with it.

Here are the functions that are available so I'll keep an eye on them on the latest discharge test
 

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The front dry contacts have activated on low SOC alarm, not protected just 🚨 alarm, I'm at 8% and from the left to the right one and two now have continuity.

I'm just sticking a fluke meter in the holes but we need to figure out what that plug is buy some.

I turned on the functions in the display it's called node one and node 2, node 1 is the first two pins from the left.

Function two in the software makes the front LED SOC reverse positions instead of the far right being the least significant it makes the far left least significant so you turn off function 2
 

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BarracudaBob said:
The front dry contacts have activated on low SOC alarm, not protected just 🚨 alsrm, I'm at 8% and from the left to the right one and two now have continuity.

I'm just sticking a fluke meter in the holes but we need to figure out what that plug is buy some.

I turned on the functions in the display it's called node one and node 2, node 1 is the first two pins from the left.

Function two in the software makes the front LED SOC reverse positions instead of the far right being the least significant it makes the far left least significant so you turn off function 2
Click to expand...
Isn't the (a) function of the dry contacts to signal to start a generator or other external power supply? This would match with your observation.
 
wildbird12 said:
Isn't the (a) function of the dry contacts to signal to start a generator or other external power supply? This would match with your observation.
Click to expand...
You can use it for that That's usually a function of the inverter I know my 3000 units have similar contacts on the bottom. Run it through a relay you can do whatever you want switch a contactor to turn on a charger from the utility side start a generator pull the neutron rods out of the reactor
 
BarracudaBob said:
You can use it for that That's usually a function of the inverter I know my 3000 units have similar contacts on the bottom. Run it through a relay you can do whatever you want switch a contactor to turn on a charger from the utility side start a generator pull the neutron rods out of the reactor
Click to expand...
Need someone to identify the part number of the plug we can buy that sticks in the hole
 
My modifying values and still keeping the state of health at 100%. This is the latest results.

I'll share the config files after I charge it up again and discharge it. The immersion heaters are in the hot tub so not wasting any watts.

Short answers I set the full capacity and the rated capacity to 103.5 amps that way if it starts putting out less the state of health will start clicking down I actually want to see it move I'd rather give it real numbers and let it do its job.
 

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BarracudaBob said:
The front dry contacts have activated on low SOC alarm, not protected just 🚨 alsrm, I'm at 8% and from the left to the right one and two now have continuity.

I'm just sticking a fluke meter in the holes but we need to figure out what that plug is buy some.

I turned on the functions in the display it's called node one and node 2, node 1 is the first two pins from the left.

Function two in the software makes the front LED SOC reverse positions instead of the far right being the least significant it makes the far left least significant so you turn off function 2
Click to expand...
I need to change that led graph. It has always bothered me that it is backwards! 😵‍💫
 
Just for the info here, the rack is good for ~1300lbs of equipment and the rack support/shelves for the batteries are good too 110lbs, per the manufacturer.

Installing the batteries with the shelves was a bit of a pain since the rack ears for the shelf are behind the ears for the battery, so lining them up was a bit of a challenge, but I skipped one hole on the rack between batteries and a 1/2" piece of plywood in between the batteries while racking them was nearly perfect spacing and also allowed me to adjust the height of the battery and shelf to stab the front screws in the rack. The top screw for the battery rack ears I put a washer between the rack and the battery rack ear so it mounted flat along with the bottom screw which had the shelf ear sandwiched in. I hope that makes sense.
 
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BarracudaBob said:
The front dry contacts have activated on low SOC alarm, not protected just 🚨 alsrm, I'm at 8% and from the left to the right one and two now have continuity.

I'm just sticking a fluke meter in the holes but we need to figure out what that plug is buy some.

I turned on the functions in the display it's called node one and node 2, node 1 is the first two pins from the left.

Function two in the software makes the front LED SOC reverse positions instead of the far right being the least significant it makes the far left least significant so you turn off function 2
Click to expand...
So is that per battery or for all batteries? In short, does this change on the master if any battery has a condition to change it.
 
whoinow said:
So is that per battery or for all batteries? In short, does this change on the master if any battery has a condition to change it.
Click to expand...
That's a good question right now I would say it's per battery but I know that if they're all connected together.

I do know if you turn the master BMS all the slaves turn off.

So there's a possibility that maybe the master would do alarms with the slaves but needs to be tested.

Simple answers just wire them all in parallel if anything alarms out you get a notification.
 
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BarracudaBob said:
How did you do that. What are your USB settings ?
Click to expand...
Not sure exactly. Was doing number of different things. Trying to get EG4 and EW charged up to 100%. BMS power cycle was one of them. Using rs232/USB so have correct settings and after disconnecting and reconnecting in SA settings it went back to normal. It was just funny.

Going to switch to rs485 so i can connect EW and PowerPro both to SA directly. Right now can only connect one or the other using rs232. I hope PowerPro supports rs485 for monitor.
 
JohnKl said:
Not sure exactly. Was doing number of different things. Trying to get EG4 and EW charged up to 100%. BMS power cycle was one of them. Using rs232/USB so have correct settings and after disconnecting and reconnecting in SA settings it went back to normal. It was just funny.

Going to switch to rs485 so i can connect EW and PowerPro both to SA directly. Right now can only connect one or the other using rs232. I hope PowerPro supports rs485 for monitor.
Click to expand...
Can't help you much on the EG4 PowerPro but I use 2 Solar Assistants. One for the LifePower4 v1 and the other for E-W in JBD RS485 multiple USB's selected. Use the waveshare 4:1 RS385 to USB and a Vatrer I added a USB to. E-W and Vatrer both use JBD.
 
BarracudaBob said:
Can't help you much on the EG4 PowerPro but I use 2 Solar Assistants. One for the LifePower4 v1 and the other for E-W in JBD RS485 multiple USB's selected. Use the waveshare 4:1 RS385 to USB and a Vatrer I added a USB to. E-W and Vatrer both use JBD.
Click to expand...
Copy. Thanks. Yeah i ordered that 4:1 hub you mentioned. Will experiment with it when it arrived. At the moment I'm getting EW directly as the 'battery' in SA and some basic powerpro data from inverter since i have 18k and powerpro in closed loop. Ideally want SA getting battery data directly for both so i can get details from PowerPro as well.
 
robby said:
I wonder if that is a because the last battery has a termination problem on the Ethernet jack?
They always say that the last one needs to be terminated.
Click to expand...
Only single EW but i guess it is the first and last in the pack. I am guessing it was the BMS power cycle maybe while SA was still connected. I can try to duplicate for fun maybe.
 
JohnKl said:
Only single EW but i guess it is the first and last in the pack. I am guessing it was the BMS power cycle maybe while SA was still connected. I can try to duplicate for fun maybe.
Click to expand...
There can be stray voltages that effect the RS485 if running from different sources. I have seen a SA running on one rack give strange readings with another rack was connected via the USB. Even with AWG 2 feeding the racks together some strange ground loop or something going on. The EW SA is fed by 48V from that Rack and the EG4 the Same on the 2nd rack. No intertrack com's to worry about. I have a ground that I use a single Anderson plug to ground the racks together. Just to make sure nothing strange happens.
 
JohnKl said:
Only single EW but i guess it is the first and last in the pack. I am guessing it was the BMS power cycle maybe while SA was still connected. I can try to duplicate for fun maybe.
Click to expand...
Never mind, I just realized your using RS485, but it still should be terminated with 120 ohm resistor

Original post left for CAN Bus users:
Did you make your own cable going to the Inverter or the CAN-USB converter going to the PI ?
If so did you use a twisted pair of wires?
Sounds unlikely that it would be a Termination issue but I have never run my batteries without Termination when using Canbus.
Like most things in electronics you hear some people say that it will Not work properly without it, while others say it is just fine.
It's pretty easy to make one if you have a Ethernet jack, a crimp tool and can buy a 120 Ohm 1/4W Resistor.
This Doc will help.
Canbus termination
 
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