Emerson/Vertiv R48-series CAN programming?

[jollmo]

Hmm, did you remove those screws connecting the chassis to GND? (locatet at the bottom, back side) that could solve your problems when putting them in series......

 

[dominik h]

All the rectifiers are not very precise in measuring current. I know from other companies that the values vary by plus or minus 1,5A.
Voltage reading is more accurate. It is around -0,1 to +0,3V to the voltage setting.
I programmed nearly 120 rectifiers from Eltek , Huawei , Vertiv and Megmeet in the last two years and checked their voltages unloaded and also the current settings with load applied. The best thing was all of them always reached the claimed output power.

 

[dominik h]

I had the same series connected voltage problem during my first tries with the Eltek 48V 3kW Frontend Version, but only under full load. If one of them drops under 30V they reduce the output current to 50%, and at this point the voltage drops and on the other the voltage rises

 

[dominik h]

The vertiv r48-2000e3 ,and the others to, reduce the output current when the voltage drops.
At 10V the r48-2000e3 drops down to 20A. It was set to full current.

 

[dominik h]

Sorry , some of the pics are not good anymore, since my old SD-Card died

 

[qwertyvitas]

Hello! I have Emerson R48-1000 and mcp2515 CAN from aliexpress.
When I connect my rectifier with arduino, I see this:

15:37:43.619 -> RX ID: 0x0707F803 Length: 8 Data: 0x04 0xF0 0x01 0x5A 0x00 0x00 0x00 0x00 Z
15:37:46.258 -> RX ID: 0x0707F803 Length: 8 Data: 0x02 0xF0 0x00 0x00 0x00 0x00 0x00 0x00
15:37:46.755 -> RX ID: 0x0707F803 Length: 8 Data: 0x03 0xF0 0x10 0x5A 0xCB 0xA7 0x05 0xB9 Z
15:37:49.265 -> RX ID: 0x0707F803 Length: 8 Data: 0x02 0xF0 0x00 0x00 0x00 0x00 0x00 0x00
15:37:52.308 -> RX ID: 0x0707F803 Length: 8 Data: 0x02 0xF0 0x00 0x00 0x00 0x00 0x00 0x00
15:37:52.705 -> RX ID: 0x0707F803 Length: 8 Data: 0x01 0xF0 0x00 0x00 0x3A 0x80 0x00 0x00 :
15:38:00.345 -> TX ID: 0x0607FF83 Length: 8 Data: 0x03 0xF0 0x00 0x21 0x42 0x48 0x00 0x00 !BH
15:38:00.345 -> RX ID: 0x0707F803 Length: 8 Data: 0x01 0xF0 0x00 0x00 0x3A 0x80 0x00 0x00 :
15:38:01.404 -> RX ID: 0x0707F803 Length: 8 Data: 0x02 0xF0 0x00 0x00 0x3A 0x80 0x00 0x00 :
15:38:10.539 -> RX ID: 0x0707F803 Length: 8 Data: 0x02 0xF0 0x00 0x00 0x00 0x00 0x00 0x00

TX ID: 0x0607FF83 Length: 8 Data: 0x03 0xF0 0x00 0x21 0x42 0x48 0x00 0x00 - excellent works and set 50.0V on 30 sec
But I can not decipher the RX ID commands that the rectifier sends.
What is encrypted here 0x02 0xF0 0x00 0x00 0x3A 0x80 0x00 0x00 for example?

 

[thnorthstar]

Hello! I have Emerson R48-1000 and mcp2515 CAN from aliexpress.
When I connect my rectifier with arduino, I see this:

TX ID: 0x0607FF83 Length: 8 Data: 0x03 0xF0 0x00 0x21 0x42 0x48 0x00 0x00 - excellent works and set 50.0V on 30 sec
But I can not decipher the RX ID commands that the rectifier sends.
What is encrypted here 0x02 0xF0 0x00 0x00 0x3A 0x80 0x00 0x00 for example?

If it is not a problem for you, can you share the codes and documents you made with Arduino?

 

[AshevtsovS]

Hi!
How to correctly set the power supply unit to a constant voltage? According to the instructions, it was possible to set the voltage value to 58.8V, the unit outputs this voltage, but after rebooting it resets to 53.5

 

[dominik h]

CAN-ID 06 07 FF 83
1. Data 03 F0 00 21 42 50 00 00 online-voltage value gets lost after 30 seconds , just to see the changes
2. Data 03 F0 00 24 42 50 00 00 offline voltage Setting Voltage permanent to 52,5V
this works between 42 24 00 00 min 41V and 42 6A 00 00 max 58,5V
You can also only send the offline value command, but then you have to wait 30 seconds until the rectifier changes the voltages.

If you set the offline voltage and it looses this setting, either you set a to high value or the rectifier is not ok

 

[AshevtsovS]

Everything is correct, I set a constant voltage of 58.5V using the command:
"CAN-ID: 06 07 FF 83
Data: 03 F0 00 24 42 6А 00 00 ". After 30s, the rectifier changed the voltage. But after restarting, it reset the value to 53.5V again.
It turned out that 58.5V was a lot for him.
I set 58.4 - and he remembered it even after rebooting.
Thank you!

 

[dominik h]

OK that is new for me,
could be some sort of overvoltage protection.

 

[Pham Tuan Anh 65]

Everything is correct, I set a constant voltage of 58.5V using the command:
"CAN-ID: 06 07 FF 83
Data: 03 F0 00 24 42 6А 00 00 ". After 30s, the rectifier changed the voltage. But after restarting, it reset the value to 53.5V again.
It turned out that 58.5V was a lot for him.
I set 58.4 - and he remembered it even after rebooting.
Thank you!

You use Data: 03 F0 00 21 42 6А 00 00 ( Equalize Charge Voltage command ) will set DCout = 58.5 after restarting ;and Data: 03 F0 00 24 42 6А 00 00 (default voltage command ) will set DCout = 58.5 when running offline

 

[Yodany]

Hi there,
Can you please a can programing interface and program for this Vertiv? I suspect we need something to match the baud rate... any advice would be appreciated.

Did anybody create something for raspberrypi?

Thank you.

 

[dominik h]

Frame ID 06080783 or 0607FF83 speed 125kB/s

Sorry no Arduino , Rapsberry or ESP program from my side,I use a USB to CAN converter and my laptop
Baud rate see above and you need to set extended frame , at least in my tool.
I use the canalyst 2 for programming.