Inacurate temperature reading Mac Motor and CA3

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Freddie9990   1 µW

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Joined: Oct 23 2019 4:06pm

Inacurate temperature reading Mac Motor and CA3

Post by Freddie9990 » Nov 11 2019 6:37am

Hi all, I purchased an upgraded MAC 8T, 12fet controller and Cycle Analyst v3 from EM3EV.
The temperature reading on the CA3 says 3.67v 267.9celcius at room temperature. The setting are Linear/ 0c = 0.99v / T scale 100c/v. Any suggestions?

(I have emailed EM3EV but whilst waiting for their reply I thought that one of you guys might have an idea)
I have the cable to connect to pc via USB if any information from there is needed.
Thanks
Freddie

Freddie9990   1 µW

1 µW
Posts: 2
Joined: Oct 23 2019 4:06pm

Why is my CA3 displaying 268c?

Post by Freddie9990 » Nov 11 2019 12:58pm

I purchased an upgraded MAC 8T, 12fet controller and Cycle Analyst v3 from EM3EV. The temperature reading on the CA3 says 3.67v 267.9celcius at room temperature. The setting are Linear/ 0c = 0.99v / T scale 100c/v. Any suggestions?

goatman   1 kW

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Location: Surrey, B.C.

Re: Why is my CA3 displaying 268c?

Post by goatman » Nov 11 2019 8:11pm

maybe its thermistor? in the motor. there must be a simple test that like checking the voltage while its hooked up then use a hairdryer on the motor housing for a minute raising the internal temp in the motor and the voltage should change. if it doesn't its the thermistor?

AHicks   100 W

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Joined: Jul 24 2018 10:53am

Re: Inacurate temperature reading Mac Motor and CA3

Post by AHicks » Nov 12 2019 9:31am

On my MAC 12T, I assumed the white wire coming from the motor was the temp sensor, but found out while setting it up it's a speed sensor. There was no temp sensor.

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