This is a speed control for standard heating-pumps with single-phase-motor. I use this for my solar-heating-pump.
Specifiactions:
- Power 750W/230VAc / 350W/110VAC
- Speed controlled by DC 0-12V (galvanically isolated)
You need:
- solder-construction-kit Velleman K8064 (https://www.velleman.eu/support/downloads/?code=K8064) 15€ (The follow-up WSL8064 seams to be the same hardware, but i never tried. If you have experience, please let us know.)
- Microchip Programmer for USB like Dolla Tek K150 ICSP PIC or clone 13€ (My experience for Win10 use Drive Date 2010, not newer! http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41)
- Microchip MPLAB -Free Download (https://www.microchip.com/en-us/tools-resources/develop/mplab-x-ide)
After soldering and testing the dimmer-modul you can flash the 16F676 - PIC-controller with this new software. The dimmer module does not have to be changed. This software uses the IRQ- Input on zero-crossing of supply voltage. The triac is only switched so you get a PWM-Signal with full sinus-waves.
- PIN13 = RA0 Input-> Interrupt-trigger at zero-crossing of sinus voltage
- PIN10 = RC0 Output-> Ignition the Triac
- PIN 6 = RA4 Output-> LED - green
- PIN 5 = RA5 Output-> LED - red
- PIN 7 = RC3 Input-> JP 1
- PIN 8 = RC2 Input-> JP 2
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LED - green 0-12VDC Input signal adjust (blink-slow=low range / blink-fast=high range)
-
LED -red Boost sequence at start
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JP 1 Closed = simplePWM (Standard PWM- compact ON/OFF packets) / Open = smartPWM with spreading ON/OFF sinuses (less oscilation on low speed)
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JP 2 Closed = PWM with set speed / Open = Starting with 100% (Boost) and ramp down to set speed (more reliable)
For poti look description of manufacturer:
- RV1 = Offset
- RV2 = Span
Fine tuning in software main.c:
- PWM_MIN 75 = Min. PWM-ON-Signal (75%)