Stepper Motors: Overview
Power supply | DC | Battery supply possible |
---|---|---|
Driver electronics need | Yes | Constant voltage or Chopper driver circuitry |
Speed accuracy | High | Not effected by load torque No need for closed loop speed control |
Speed control | Step frequency ↕ | Additional electronics need No sensor need |
Position control | Low effort | Commanded by number of steps No sensor need |
Overloadablity / load inertia | Low | Only little reserve for peak load torque Can accelerate high inertia only by ramp function |
Lifetime | High | Only limited by bearings Depends on lateral force and speed |
Speed range [rpm] | 0...2000 | High value: Small motor sizes and using Chopper driver |
Efficiency | ...60% | High value for high step frequency (high speed) |
Power vs. size | Low | Due to low speed |
Winding thermal protection | No need | Inductance protected (if winding designed for 100% duty cycle) |
Load sensing | Difficult | Load has very little effect to current |
Stalling permissible | Yes | If winding designed for continuous duty cycle |
Electromag.interference EMI | Not Critical | No brushes |
Braking/Holding torque | High |
High holding torque (power keeps switched on) Lower detent torque (power switched off) |
Max.output power from JE [W] | 14 | Approximately, for short time duty cycle S2 |
Linear motors from JE | Yes |
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JE brand |