Ecm motor tester
It should be noted that the ECM motor programming is specific to each model of HVAC equipment, so programming is ONLY done at the factory, not in the field. The logic is a math equation or algorithm that figures out the ideal airflow for each specific piece of HVAC equipment out there and uses a formula to maintain that airflow using a calculation of the precise relationship between motor speed and torque. It holds the logic that controls the motor. The microprocessor is the “brains” of the motor. But for ease of discussion, I’m going focus on a Constant Torque ECM motor.Ī Constant Torque ECM is made up of two parts, the motor and ECM Microprocessor, that are both housed in one shell.
![ecm motor tester ecm motor tester](https://m.media-amazon.com/images/I/41vhjtFaouL._AC_.jpg)
Since cfm, rpm and torque are all related, the basic prinicples are the same.
![ecm motor tester ecm motor tester](https://m.media-amazon.com/images/I/811ROjLe+XL._AC_SL1500_.jpg)
Without a VFD or external sensors to monitor pressure, temperature, or anything else, how the heck does the motor know when to speed up and when to slow down?ĮCM stands for an “electronically commutated motor” which basically means a motor that uses electronic controls to vary its speed. There are three types of ECM motors: constant cfm, constant rpm, and constant torque.
![ecm motor tester ecm motor tester](https://i.ytimg.com/vi/RSjAJ0TE1Vw/hqdefault.jpg)
The general consensus was that although we were familiar with the concept behind them – they are motors that regulate their own speed without the help of an external VFD or other device – none of us really understood the magic behind what makes an ECM Motor actually work. Yeah, we have weird water cooler conversations like that. Several of us were discussing ECM motors in the office the other day.