anyone tried to using Jebo WP40?

Oh, so the outputs are the same then. Interesting. Did you try cutting some of the grates out to see if it increased the flow pattern?
 
ctlegacy said:
What is the speed on the "L" setting? My manuals are both in Chinese. Thanks.
Click to expand...

I am going to insert the 3-page user manual of the WP40 here in English. L is about 1/3 of full power.

WP40ManualP1_zps1470093a.jpg


WP40ManualP2_zps288528d0.jpg


WP40ManualP3_zps1345ee92.jpg
 
Got mine.. Too loud for me. When in wave mode the on/off is really annoying/droning. I can hear it from 30 feet away. But my house/tank is silent (up until now ;)).
I think I'm gonna try to rig it on a hydor mount or slide something better to dampen it ?
It just resonates on the glass too much.
I set it to low and I'll fix it tomorrow.
 
jedidog1 said:
Are we even sure that these pump can be controlled by pwm it being s brushless dc motor
Click to expand...

Sort of. Floyd earlier in the thread has already demonstrated that you can insert a PWM module in between the power output from the controller and the pump while maintaining the VA signal from the controller. The VA line is assumed to be the method the controller is using to control the pump.

We are assuming the VA signal to be a +5V PWM signal based on the pin it is connected to on the uC, but no one has been able to confirm that yet. Hopefully Roberto from Reefangel will be able to confirm or deny this possibility in the none too distant future.

Dennis
 
Skinnysloth said:
I will, however, pose a question to anyone with more expertise than myself to answer. Isn't the switching power supply (the power adapter) using the same on/off switching to regulate the voltage that gets supplied to the controller?
Click to expand...

Sort of but with a different outcome in mind. A Switch Mode Power Supply is providing a regulated output voltage. It is true that it does this by switching the source on and off to maintain the output voltage and current. However ample filters are provided to make sure that the output is as smooth and clean as possible.

A PWM signal on the other hand is all about the duty cycle, the ratio of time the signal is on to the time the signal is off. The net result of this when only the voltage is considered is that a PWM signal appears to be a variable voltage between 0V and the +V and given sufficient switching frequency can appear to be provide variable voltage output. This style of voltage regulation works well with LEDs as they can switch at high frequency without being damaged and our eyes are not able to detect the high frequency pulsing.

As to whether or not this device would damage the pump controller, it depends. The higher the frequency of the PWM output the less chance the uC will be affected. You can minimize this by not turning the output down too much. You would want to keep the output high enough that the +5V regulator in the controller is able to provide a steady +5V output. What that level is is open to discussion. My guess would be about 7 - 8V

Dennis
 
I received mine today

I received mine today

I finally received mine after a week and a half. I hook up both of them at full speed. Very quiet I put my ears to it and still quiet which is a plus for me. My tank is on the last leg of the cycle. So I can't really give any further test. But for the person who mention it was loud,mine are really quiet.
 
rrasco said:
Are we sure the motors are DC? They are not switching AC are they? Like the 'DC' Koralias?
Click to expand...

The power supplies feed 24V DC to the pump. A few of us have bought universal power supplies with 12-24v sliders, and the pump slows down/speeds up according to the voltage provided.
 
Im sure thier dc but being brushless with three wires it could be alternating current 3 phase with I dont thank can be controlled by pwm but by electronic speed control but thats just a guess, if they can be controlled by pwm then they could be hooked up to ardunio pwn and you could write your own programs for wave and speeds that would be nice
 
jedidog1 said:
Im sure thier dc but being brushless with three wires it could be alternating current 3 phase with I dont thank can be controlled by pwm but by electronic speed control but thats just a guess, if they can be controlled by pwm then they could be hooked up to ardunio pwn and you could write your own programs for wave and speeds that would be nice
Click to expand...

Pretty sure it is not 3 phase. Appears to be +24V, ground and the (VA) control signal. My bet is on +5V PWM for the VA line. I don't have a pump, but based on the photos posted of the controller board, the PIN on the microcontroller the VA trace connects to, and what I am was able to find in the datasheets of that chip family, that is my best guess.

Dennis
 
dartier said:
Pretty sure it is not 3 phase. Appears to be +24V, ground and the (VA) control signal. My bet is on +5V PWM for the VA line. I don't have a pump, but based on the photos posted of the controller board, the PIN on the microcontroller the VA trace connects to, and what I am was able to find in the datasheets of that chip family, that is my best guess.

Dennis
Click to expand...

Just received my pump today. Is there any thing I can try...any fresh ideas? Feel free to pm me here or on reefangel.
 
dartier said:
Sort of but with a different outcome in mind. A Switch Mode Power Supply is providing a regulated output voltage. It is true that it does this by switching the source on and off to maintain the output voltage and current. However ample filters are provided to make sure that the output is as smooth and clean as possible.

A PWM signal on the other hand is all about the duty cycle, the ratio of time the signal is on to the time the signal is off. The net result of this when only the voltage is considered is that a PWM signal appears to be a variable voltage between 0V and the +V and given sufficient switching frequency can appear to be provide variable voltage output. This style of voltage regulation works well with LEDs as they can switch at high frequency without being damaged and our eyes are not able to detect the high frequency pulsing.

As to whether or not this device would damage the pump controller, it depends. The higher the frequency of the PWM output the less chance the uC will be affected. You can minimize this by not turning the output down too much. You would want to keep the output high enough that the +5V regulator in the controller is able to provide a steady +5V output. What that level is is open to discussion. My guess would be about 7 - 8V

Dennis
Click to expand...

Thanks for the explanation. So, I'm hearing, it's probably fine to use at the higher voltages, but use at your own risk.
 
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