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Easily program a PWM fan with just a standard 12v power source with this very small module (1.6" x 0.75")! This will allow you to pinpoint the speed of your fan from it's minimum to maximum setting and have it ramp up as your enclosure becomes hotter. This is perfect for an audio visual, home entertainment, or other enclosure where keeping noise to an absolute minimum is vital. 4.25" stripped input lead cables connect into this PCB with included 3.5" thermostat--please note that this does not work with our other thermocouple cables.
Unit has been tested to work for up to 2A worth of devices.
HOW TO IMPUT SETTINGS
Plug PWM Fan in, Connect 12V Power, Red to +, Black to -, if fan spins... continue.
(Plug Thermocouple in after programming to enter normal operation)
How To Enter Programming Mode:
First button short push ——— Base fan speed (fan speed when cool - power on)
Long button push- (slow flash) Trigger temperature (temperature that fan begins to speed up)
Long button push- (medium flash) Temperature range (temperature spread from trigger point to 100% fan speed)
Rapid flash - (Ready to save) —————— Followed by long button push, saves setting.
(Settings NOT saved within 20 seconds will be lost!)
Setting Base Fan Speed:
(The speed the PWM fan will run when the power comes on, and unit is cool)
-Plug a PWM fan into the controller.
Connect 12V to Power On controller - LED #2 lights up = General operation
Single (short) button press increases Base Fan Speed by 5% - LED #3 lights up momentarily.
Double (short) button press decreases Base Fan Speed by 5% - LED #1 lights up momentarily.
When LEDs #1 and #2 light up together, the minimum Base Fan Speed has been reached.
When LEDs #2 and #3 light up together, the maximum Base Fan Speed has been reached.
After every action, LED #2 will flash rapidly, indicating a new setting is ready to be entered.
When the desired speed is reached, HOLDING DOWN the button until LED #2 is stops flashing, saves that setting.
(Settings NOT saved within 20 seconds will be lost!)
Setting Trigger Temperature:
(The temperature that the PWM fan starts to speed up over base speed)
Connect 12V to Power On controller
With LED #2 ON (not flashing), hold button down until LEDs start to flash slowly, then release the button.
Now each short button press will cycle you through the different temperature settings in oC as indicated by the LED pattern (see chart,
2nd column).
When desired Trigger Temperature is reached, hold button down until LEDs stops blinking, to save setting.
(Settings NOT saved within 20 seconds will be lost!)
Setting Temperature Range:
(How fast the PWM fan speeds up to 100%, based on number of degrees oC over Trigger Temperature)
Connect 12V to Power On controller
With LED #2 ON (not flashing), hold button down until LEDs starts to flash (flashes more quickly than Trigger settings), then release the
button.
Now each short button press will cycle you through a temperature range in oC as indicated by the LED pattern (see chart, 3rd column).
When desired Temperature Range is reached, hold button down until LEDs stops blinking, to save setting.
(Settings NOT saved within 20 seconds will be lost!)
-How this works-
How this works is, as an example, if you set your Trigger Temperature to 50oC, the fan will start to speed-up when this temperature is reached.
Now if you wanted your PWM fan at full speed (100%) at 70oC, you would set the Temperature Range at o20C.
This give your PWM fan a range of o20C to ramp up to full speed from the base speed.
If you wanted a more gradual ramping up of your PWM fan speed, but you still needed full speed by 70oC, you would set the Trigger
Temperature to 30oC, then set a range of 40oC, making the increase in speed happen over a wider range of temperature.
Now if you want a faster increase in speed, with your Trigger Temperature at 30oC, then you would set the Temperature Range to a lower
range, like 15oC, which would make the PWM fan run 100% at 45oC.
