Oscilloscope Question (Jebao CP-40)
Posted: Mon May 09, 2016 5:41 am
Could anyone recommend a CHEAP oscilloscope for checking out the waveform from a Jebao controller? I have a CP-40 on the way and I want to see how it's controlled.
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It's not standard Jebao stuff. Apparently the pump itself contains no control circuitry (unlike the other Jebao pumps). It also has the capability of turning in reverse, which indicates it's not just a simple 0-5v control scheme.Jebao/Jecod Cross-Flow Pump Update ****
I had a private conversation with Jecod and it appears the cross-flow pump (now called CP-40) has the same connector but different pinouts from the RW pumps. This means that the JBWave as well as the RW stock controller/twins controller and any others like Apex adapters will not work. Plugging any of these controllers into the CP-40 may damage the pump but this is not confirmed. I am waiting delivery so I can very this myself and make whatever modifications are needed to make the JBWave compatible. In the mean time, please do not plug the JBWave (or any other Jebao controller) into the CP-40 pump until I can verify this.
-Joe
The CP-40 uses a 3-phase sensorless BLDC motor. So any controller would need to generate the 3 phase signals, plus use Back EMF sensing to control rpm.
Just to clarify, you used the controller that comes with the Gyre on the Jebao?rimai wrote:I have used the controller for the gyre that coralvue developed on the original gyre pump and it works pretty well.
It allowed me to control the forward/reverse direction as well as the speed.
If the connectors are the same, you may be able to use the same module.
It means that you need a motor driver that is capable of driving a 3 phase motor that has no sensors. It is similar to RC car motors.cosmith71 wrote:Can anyone translate this?
The CP-40 uses a 3-phase sensorless BLDC motor. So any controller would need to generate the 3 phase signals, plus use Back EMF sensing to control rpm.
No, I tested the icecap gyre controller from coralvue with the original gyre pump and it worked very well with RA.cosmith71 wrote:Just to clarify, you used the controller that comes with the Gyre on the Jebao?rimai wrote:I have used the controller for the gyre that coralvue developed on the original gyre pump and it works pretty well.
It allowed me to control the forward/reverse direction as well as the speed.
If the connectors are the same, you may be able to use the same module.