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Idle stepper motor
1. Outline drawing and pin definition
2. Working principle
The basic working principle of idle bypass air volume control valve comes from the principle
of stepping motor. It is composed of rotor made of two special-shaped permanent magnet
modules, stator component composed of two groups of two-phase electromagnetic coils,
screw rotor transmission mechanism which converts rotary motion into straight line, conical
regulating control valve, input circuit signal connector, spring, metal forming assembly fixed
shell, rubber sealing ring and other main components. When a specific electric pulse input
signal acts on the two groups of electromagnetic coils respectively, the polarity of the
electromagnetic field formed by the two groups of coils will be changed in a certain order.
According to the principle that the same magnetic field attracts and the different magnetic
field repels each other, the rotor mechanism will be driven to rotate in a certain direction.
Therefore, the stepper motor can transform the electric pulse input signal into
discontinuous mechanical rotary motion, and then transform the rotary motion of the rotor
into the forward and backward linear motion of the adjusting head through the screw rotor
transmission mechanism.
3. Basic parameters
Rated total operating voltage: 12V;
Allowable working voltage: 7.5V ~ 14.2V;
Allowable working temperature: -40℃ ~ 150℃;
DC resistance specification of each coil: 53±5.3Ω（ test at 27 ℃);
Inductance characteristics of each coil: 33±5mh (test at 25 ℃ with 1000Hz sine wave
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