This article describes the encoder parameters commonly used in NEMA 23 and NEMA 24 closed-loop stepper motors.
1. Encoder Model Suffix: 23HSXX-E1000, 34HSXX-E1000
Encoder Appearance:
Electrical Specifications:
| Parameter | Value |
|---|---|
| Output Circuit Type | Differential (Line Driver) |
| Encoder Type | Optical Incremental |
| Encoder Resolution | 1000 PPR (4000 CPR) |
| Output Signal Channels | 2 (A, B) + Z index |
| Supply Voltage Min | 4 V |
| Supply Voltage Max | 5 V |
| Output Current | 100 mA |
| Output High Voltage | 5 V |
| Output Low Voltage | 4.5 V |
| Output Frequency Max | 60 kHz |
Waveform Graph:
- Waveform ratio: a + b = 0.5T ± 0.1T; c + d = 0.5T ± 0.1T
- Z signal width: 0.25T ± 0.15T
- A, B phase absolute angle error: ≤ 0.2T
- Cycle error: ≤ 0.05T
- T = 360° / N (where N is the number of output pulses per revolution)
- The relative phase positions of the A, B, and Z signals are not specified.
2. Encoder Model Suffix: 17HSXX-E1000, 17HSXX-E1K
Encoder Appearance:
Electrical Specifications:
| Parameter | Value |
|---|---|
| Output Circuit Type | Differential (Line Driver) |
| Encoder Type | Optical Incremental |
| Encoder Resolution | 1000 PPR (4000 CPR) |
| Output Signal Channels | 2 (A, B) + Z index |
| Supply Voltage | 5 V (regulated) |
| Output High Voltage | < 4 V |
| Output Low Voltage | < 1 V |
Waveform Graph:
- Waveform ratio: a + b = 0.5T ± 0.1T; c + d = 0.5T ± 0.1T
- Z signal width: 0.25T ± 0.15T
- A, B phase absolute angle error: ≤ 0.2T
- Cycle error: ≤ 0.05T
- T = 360° / N (where N is the number of output pulses per revolution)
- The relative phase positions of the A, B, and Z signals are not specified.
3. Encoder Model Suffix: 17XX-ME1K, 23XX-ME1K
Encoder Appearance:
Electrical Specifications:
| Parameter | Value |
|---|---|
| Output Circuit Type | Differential (Line Driver) |
| Encoder Type | Magnetic Incremental |
| Encoder Resolution | 1000 PPR (4000 CPR) |
| Output Signal Channels | 3 (A, B, Z) |
| Supply Voltage Min | 3.3 V |
| Supply Voltage Max | 5.5 V |
| Output Current | 20 mA |
| Output High Voltage | 5 V |
| Output Low Voltage | 0.2 V |
| Output Frequency Max | 400 kHz |
Waveform Graph:
