I have a challenge for all you EEs out there that this Civil Engineer is too dumb to figure out. I recently bought two Jebao OW 25 pumps and a Jebao to Apex adapter. At the time I thought all of the Jebao pumps could be controlled using this adapter. Turns out, the OW series is a new design and they moved all of the electronics to the controller so the adapter doesn't work. I assume this means they are using EMF feedback on the controller side instead of Hall sensors inside the motor. Long story short, I want to try to figure out how I can mod the controllers to work with the Jebao to Apex adapter, if possible. I know this is not a task anyone can figure out from scratch without knowing how the controller's board is set up, so I took a couple of pictures of the board. Can anyone help me figure this out? If more/different pics can help in any way, please let me know.
Calling all Electrical/Electronics Engineers
- Thread starter McArcher
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I have a challenge for all you EEs out there that this Civil Engineer is too dumb to figure out. I recently bought two Jebao OW 25 pumps and a Jebao to Apex adapter. At the time I thought all of the Jebao pumps could be controlled using this adapter. Turns out, the OW series is a new design and they moved all of the electronics to the controller so the adapter doesn't work. I assume this means they are using EMF feedback on the controller side instead of Hall sensors inside the motor. Long story short, I want to try to figure out how I can mod the controllers to work with the Jebao to Apex adapter, if possible. I know this is not a task anyone can figure out from scratch without knowing how the controller's board is set up, so I took a couple of pictures of the board. Can anyone help me figure this out? If more/different pics can help in any way, please let me know.
Correct, that’s a standard back-EMF three phase motor controller.
The OW pumps aren’t as high power as the DCT pumps. What voltage do they run on?
Options I see:
- replace the motor controller wholesale. Maybe the DCT controller that has APEX input can drive the OW pumps, I’m unsure how flexible it is and if it would commutate.
- Remove the potentiometer and feed the voltage to the wiper terminal from the APEX signal. Simplest hack. If this is an encoder, this wont be nearly as easy [emoji4]
- Figure out what data frames that radio module is sending and send commands to the controller from another microcontroller over serial.
Edit: Also 24V, and it looks very similar to other Jebao controllers. The feedback current resistor would likely need to be changed in the DCT APEX controller box to not melt the OW motor.
I appreciate the thoughtful response. Unfortunately, I’m just a dumb civil engineer so most of that went right over my head. I’m pretty good with DIY and if given specific direction can usually figure stuff out. But they dropped the circuits requirement for Civil the year I started school, so I would need some hand holding to get it done.
thatbamaguy
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I know this is an old thread but I'm building a controller for these pumps. I was able to drive the pump with this:
KOOBOOK 1Pcs DC 12V-36V 500W Brushless Motor PWM Control Controller Module Balanced BLDC Driver Board
W,V, and U correspond to MA, MB, and MC respectively. The 5V pin is an output you can use for a pot or to power a microcontroller. The VR pin is how you control speed. I'll be driving with pwm from an ESP32 but for the APEX you could use a resistor in series on the 0-10V control wire and connect to this pin and the ground. You would need to test the resistance between this pin and ground and match that resistance.
I hope this helps anyone that's still looking into this.
KOOBOOK 1Pcs DC 12V-36V 500W Brushless Motor PWM Control Controller Module Balanced BLDC Driver Board
W,V, and U correspond to MA, MB, and MC respectively. The 5V pin is an output you can use for a pot or to power a microcontroller. The VR pin is how you control speed. I'll be driving with pwm from an ESP32 but for the APEX you could use a resistor in series on the 0-10V control wire and connect to this pin and the ground. You would need to test the resistance between this pin and ground and match that resistance.
I hope this helps anyone that's still looking into this.
