| 摘要 |
A multifunctional ECM and an HVAC system using the same. The ECM comprises a motor and a motor controller. A microprocessor, an inverter circuit, a gear detection circuit, and a power supply part are integrated on a control circuit board. The gear detection circuit is connected to a plurality of gear input lines. The ECM also comprises a first alternating-current input lead, a second alternating-current input lead, a common lead, a ground lead, a first jumper, and a second jumper. Each of the gear input lines is connected to a first input end of a current sensing unit. The first jumper is connected to the second alternating-current input lead. The second jumper is connected to the common lead. Second input ends of the current sensing units are connected in parallel and then are connected to the common lead and the second jumper. The ECM has a simple structure, and can conveniently replace a PSC motor and an ECM using alternating-current input as a gear signal in the market. |
