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 |
|
| JE brand |  |
