RuiDeng Riden RD6006 DC power supply

[Cliff Matthews]

Abour RD6006, You can see the results of my protocol reverse engineering here:
 https://github.com/msillano/RD6006-Super-power-supply

It is easy to test the protocol using node-red and  node-red-contrib-modbus.
Best regards
m.s.

Thank You, now it's up to us to let others know, since RD Tech has closed all comments on their YT channel (Dorks  ).

[BlackFX]

Has anyone managed to unlock the front panel while USB is connected?

[msillano]

Just finish:

NiMH battery charger using RD6006, logging on mySQL database.


See https://github.com/msillano/RD6006-Super-power-supply with documentation.

Best regards.
m.s.

[Cliff Matthews]

Just finish:

NiMH battery charger using RD6006, logging on mySQL database.


See https://github.com/msillano/RD6006-Super-power-supply with documentation.

Best regards.
m.s.

So what happens to a battery when, or if, the serial link disconnects?
I think it would be great to ask Riden to make a future revisions in the ST uC code so that if selected from a timeout menu, it would act like a watch-dog timer. Eg: if no serial commands are received every x seconds, the output switches off for safety.
Any thoughts? Because it's unlikely Riden will open-source all their code.

[msillano]

So what happens to a battery when, or if, the serial link disconnects?
I think it would be great to ask Riden to make a future revisions in the ST uC code so that if selected from a timeout menu, it would act like a watch-dog timer. Eg: if no serial commands are received every x seconds, the output switches off for safety.
Any thoughts? Because it's unlikely Riden will open-source all their code.

Good question. I just finish this, and now I'm testing it in different scenarios.

For now please note the following things:

• The node-red-contrib-modbus as the feature 'auto-reconnect' in case of lost connection (timeout user-defined).
• In case of disconnection, the charge process is still working on RD6006:  it will terminate for   (OVP, OCP, OTP, Iout<10 mA) only. Of course, the user is losing the log.

Best regards
m.s.

[rolfdegen]

Hello..

I have to buy a complete RD6006 Kit (Joy-IT RD6006) from reichelt in germany.



The kit (Reichelt article number JOY-IT RD6006 S2) contains the following parts:
JT-RD6006 (control instrument)
JT-RD6006-Case1 (comfort case)
JT-RD6006-Con (WiFi module)
JT-RD6006-NT (power supply)

Link: https://www.reichelt.de/rd-labornetzgeraet-0-60-v-0-6-a-comfort-set-joy-it-rd6006-s2-p273625.html?r=1

What I find very interesting is the type of ventilation in here
the video by Jerry Walker is shown. It has the power supply cover
removed and the fan removed. Since the removed power supply fan
is larger than the supplied case fan, this was on the
Screwed back of the housing and with the control electronics in the
Power supply connected.

Link to the video: Youtube video "Riden RD6006 Power Supply Part1"


In addition to the Joy-IT RD6006 kit, I also have an electronic one
Load (max. 150 watts) ordered (see picture). Then I can do that
Test the power and stability of the power supply.



specifications:
Voltage: DC 12V ± 5%
Load type: constant current
Load voltage: 0.5-60V
Load current: 0-10A
Max power: 150W
Voltage measurement accuracy: ± (0.1% + 0.05% FS)
Current measurement accuracy: ± (0.2% + 0.1% FS)
Constant current accuracy: Current reading accuracy + 1d
Noise: 25dD (A)

Link:
https://www.amazon.de/gp/product/B01N02P8UJ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1


Here are two videos of me about the DIY kit RD6006

Part 1: assembly and first test
https://youtu.be/VnlaPLzZtF0

Part 2: power measurement and temperature
https://youtu.be/f44B7oMN_IQ

Part 3: The third part about the RD6006 power supply is about Rippel and Noise
https://youtu.be/oIgDpWblxkM

Rippel and noise is an annoying topic for switching power supplies. Depending on
Design, the developers manage to keep the interference voltage to a minimum
to reduce. But a certain amount of ripple in the
Unfortunately, output voltage always remains.

In circuit developments in the audio area and laboratory there is a linear one
PSU better fiddled. A good linear power supply, for example the Rigol DP711
have a residual ripple of <500 µVrms / 3 compared to the RD6006
mVpp. The RD6006 is suitable due to its high ripple (loud
Manufacturer about 100mVpp) not necessarily for that.


When looking at test reports on Youtube, I'm on one
interesting video by Hannes Jochriem. Among other things, he tests the
Function of current and voltage limitation with an LED on a Rohde
& Black DC power supply. The LED gets when the output is switched on
briefly a voltage spike of 10 volts (1st picture). Not really
advantageous for the LED.

1.pic


2.pic


3.pic


I have the whole thing with my RD6006 and a red LED without
Series resistor tested. I set 10 volts and 20mA on the RD6006
(see 2nd picture). Then I have the reverse experiment with 2.5 volts and
1A made (3rd picture). The LED passed both tests well. One + for
the RD6006 )

Geetings from germany. Rolf 

[tchoutchawn]

Hey,
I just got mine and I must say it works pretty well for such a small device.

I didn't receive my C14 inlet and will probably add a small fan somewhere if I can make it fit.

I use a Mean Well EPP-500-54 power supply. This allows to output about 54V.

[rolfdegen]

Hallo

Yes.. its a great DIY power supply    But with big noise and ripple

I am planning to convert the RD6006 to a linear power supply.

The components for my linear power supply are:

- Toroidal transformer, 160 VA, 2x 15 V, 2x 5.33 A
- Bridge rectifier, 600 V, 8 A
- 2x electrolytic capacitor, radial, 4.7 mF, 63 V, RM 10, 85 ° C, 2000h, 20%
- BDW 83C Darlington transistor, NPN, 100V, 15A, 150W, TO-3PN
- V 4329H profile heatsink for power transistor, 75x120x32mm, 2.0K / W
- µA 723 DIL voltage regulator, adjustable, 2 ... 37 V, DIL-14
and other.

RD6006 Linear version 30VDC/5A



My idea is to convert the RD6006 controller so that it DC voltage regulated  linearly by the power supply (see picture).
An LM723 is said to be used for current and voltage control. The RD6006 Controller should take over the digital control of the LM723.
Therefore the RD6006 controller must be a little bit modified to hard-. and software.
LCD and key controls remain.

Greetings Rolf

[msillano]

Yes
You must write a '0' in 000F  Register (LOCK)

See  https://github.com/msillano/RD6006-Super-power-supply  and https://github.com/msillano/RD6006-Super-power-supply/blob/master/RD6006_prtotocol_en.pdf.

Best regards
m.s.

[fastguido]

Has anyone had a problem with the output just shutting off, after a period of time?  Seems to happen intermittently, maybe temperature related thing. I need to document time vs conditions.

[dsc5555]

Has anyone had a problem with the output just shutting off, after a period of time?  Seems to happen intermittently, maybe temperature related thing. I need to document time vs conditions.

Yes, I have had that problem also while having a unit on all day while developing some electronics. The power supply was set at 5v and was drawing about 100mA. Its very random though, occasionally 3 times in a day sometimes none. I dont have the wifi module or the little battery plugged in but I do have the temp sensor plugged in.
My power supply powering is a MeanWell medical grade supply. 50v out @ 2.5a.
My firmware on the supply is V1.25.

[BlackFX]

Yes
You must write a '0' in 000F  Register (LOCK)

See  https://github.com/msillano/RD6006-Super-power-supply  and https://github.com/msillano/RD6006-Super-power-supply/blob/master/RD6006_prtotocol_en.pdf.

Best regards
m.s.

Mine seems to ignore any writes to 000F

[Odd]

Do we have the SCPI commands it accepts?
I would like to make use it with PyVISA.

[nico282]

I also managed to sniff this URL from the windows app

http://www.ruidengkeji.com/rdupdate/

It has the firmware files and software, It appears there was an RD60061 and so this is the 60062 (beta maybe). Unfortunately the firmware is compressed so I can't find anything useful there.

Thanks BlackFX for the link.

Just to add an useful piece of information, I just updated from firmware 1.25 to 1.28. The release notes showed in the software are:

Code: [Select]

2020.01.13 V1.28
1. Optimize the anti-interference ability of battery voltage measurement
2. Optimize the relay to be forced off during standby
3. Optimize the shortcut to call out the data and enter the setting data to change the stored data group indication
4. Optimize the problem that the product will freeze for a long time during long-term communication


[BlackFX]

Do we have the SCPI commands it accepts?
I would like to make use it with PyVISA.

They don't support SCPI.

Communication is MODBUS over Serial.

[Odd]

Is there a python library to control it over that serial port (or IP), and read out voltage/current?

[msillano]

For all interested in battery chargers, I just finish the RD6006 NiMH battery and packs charger logger ver. 2.
You can find it here: https://github.com/msillano/NiMH_charger_logger.

OpenOffice graph via CSV, slow charge.


OpenOffice graph via CSV, fast charge.


Best regards
m.s.

[msillano]

Is there a python library to control it over that serial port (or IP), and read out voltage/current?

Look at:
https://github.com/rfinnie/rdserialtool CLI in Python
https://github.com/Black-FX/rdserialtool UI extension

m.s.

[rolfdegen]

Hello friends

I have now converted the RD6006 into a linear power supply. The power is 32V and 3.5A. The RD6006 controller takes over the digital control of voltage and current.  For the current limitation I use the BAT connector. A short positive voltage pulse on this line switches the RD6006 power supply output into OFF-Mode ("ON/OFF" button goes off). For air cooling, I use the included temperature control and a quiet 80x80mm fan from Noctua.

RD6006 controller and control lines


RD6006 parts


RD6006 power supply board

On the power supply board I have removed all parts that are not needed.

Circuit diagram


Heat sink and test board






I'm also planning to switch the transformer voltage from 15VAC to 30VAC to minimize power dissipation at the power transistor.

Greetings from Germany. Rolf

Translated with www.DeepL.com/Translator (free version)

[andrivet]

Is there a python library to control it over that serial port (or IP), and read out voltage/current?

https://github.com/Baldanos/rd6006

With some nice information about the protocol.

[rolfdegen]

Hi, there.

I have now installed the transformer voltage switch. The
Switching works from 15V and switches the voltage from 15VAC to
30VAC over.

RD6006 linear power circuit




A problem occurred with the voltage regulation on the RD6006 controller.
The controller internally checks the input voltage on the "voltage sens" line
and limits the control to this voltage.

I have disconnected this line in the controller and the rectified
Transformer voltage of 43V via a voltage divider on this line
laid. The controller now also shows the
transformer voltage to 15VAC the maximum transformer voltage of 43V and can
can be regulated from 0-42V without problems.

What may follow is the separation of the output voltage via a
Relay. This prevents an unwanted switch-on pulse at the output.

Greeting Rolf

Translated with www.DeepL.com/Translator (free version)

[rolfdegen]

Hi, there.

I made a little video and ran some tests. Have fun.
look at.

Video: https://youtu.be/8mvOQC6Y-0g

Next I plan the installation of electronics and transformer into the housing
and I'm going to run some tests on the temperature development in
Making the housing.


Until then, do well. Greetings from Wuppertal in germany

[rolfdegen]

Hello friends  of electronics

I have optimized the circuit a little bit. So for example the adjustment is
of the actual and nominal voltage is no longer necessary. The equivalent stress
now comes out of the controller (voltage sens).



Because the output always had 50mV less voltage than the set
value at the controller, I have the voltage at the negated input of IC1a
with resistance R3 increased by 50mV.

Remotely I have exchanged the two operational amplifiers CA3130 against a TL072
types are exchanged (see picture).

Greeting Rolf

Addendum: R2 is not correct. It's reading 10K ohms.

Translated with www.DeepL.com/Translator (free version)

[rolfdegen]

One more small correction 

The voltage from the "voltage sens" circuit (R16+R17) does not go on
the "voltage sens" Pin12 of K1 but to the "power supply sens" Pin10
of K1 in the RD6006 controller (see picture).



Greetins. Rolf

[rolfdegen]

Hi, everybody...

There's another problem that's been bothering me a little. In my circuit.
the current limiting circuit only reacts after a delay time
of about 1-2 seconds. Sensitive components can sometimes break down
go.

For this reason I would like to improve the circuit a little. It should be...
react immediately and block the power transistor so that no
voltage is more present at the output. Furthermore the output should automatically
switched off (by a long positive pulse level), which it
after a time delay.

Let's see if we can do it with a few components.

Until then, best regards. Rolf

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