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Aquaero 5 PWM output frequency change

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arzaman

Newbie

Aquaero 5 PWM output frequency change

Thursday, January 17th 2013, 11:15pm

Hi
I'm new on the forum and this is my first post since I'm evaluating Aquaero 5 controller for a cooling application
I would like to control a peltier (TEC) chiller using the PWM output and an H-bridge circuit for power adjust.
Varying the duty cycle of PWM from 0 to 100% I would like to drive the TEC power and possibly reverting cold/hot side

The key point is that as far as I understand PWM applied to Peltier cells should be low frequency..round 2-3 Khz
Instead from specification Aquareo PWM outputs have

16Khz frequency

Is there any way to change/set the PWM frequency via GUI or software configuration ?

sure of your support
regards
Davide

This post has been edited 1 times, last edit by "arzaman" (Jan 17th 2013, 11:18pm)

arzaman

Newbie

any help

Sunday, January 20th 2013, 6:38pm

Hi All

any chance to understand if I can tweak the PWM output frequency (GUI or SW config) ?

regards
Davide

mandrix

Full Member

Monday, January 21st 2013, 3:07pm

My understanding is the PWM frequency is fixed. The only changes available through the Aquasuite software are for % power output.

sebastian

Administrator

Tuesday, January 22nd 2013, 7:20am

The frequency is fixed, you can only set the duty cycle.

arzaman

Newbie

Tuesday, January 22nd 2013, 9:46am

thank you for the info... I will try to understand if I can drive a Peltier Cell with 16khz frequency

One more thing still on the two PWM output...may I connect the output to a input temperature sensor and a control algorithm (PID) like other fan output ?

regards
Davide

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