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Model Explanation
| Model Part | Descrizione |
| E6B2 | Standard incremental rotary encoder |
| CWZ6C | NPN open-collector output, 3-fase (A/B/Z), radial cable outlet |
- Core Technical Specifications
| Item | Specification |
| Tipo | Incremental rotary encoder |
| Output phases | Phase A, Phase B, Phase Z (index) |
| Output type | NPN open-collector output |
| Supply voltage | DC 5–24 V |
| Resolution | Common: 1000 P/R (also 600/1024/2000, ecc.) |
| Response frequency | Max. 100 kHz |
| Phase order | Phase A leads Phase B by 90° (clockwise) |
| Shaft diameter | φ6 mm solid shaft |
| Flange | Standard φ50 mm circular flange |
| Cable outlet | Radial cable outlet |
| Protection class | IP50 (body) |
| Allowable rotation speed | Max. 6000 r/min |
- Standard Wiring (Più comune)
| Wire Color | Function |
| Brown | DC +V (5–24V) |
| Blue | 0V / GND |
| Black | Phase A output |
| White | Phase B output |
| Orange | Phase Z (index) output |
- Outline & Mounting Notes
Flange diameter: 50 mm
Shaft diameter: φ6 mm (standard keyway/flat)
Mounting: 2 or 3 mounting holes for flange fixing
Applications: Speed detection and positioning for servo/stepper motors, length meters, textile, printing, machine tools
- Applicazioni tipiche
Motor speed feedback
Positioning and homing
Length and speed measurement
Automation equipment, CNC machines, conveyor belts
OMRON E6B2 Series Encoder
Core Output Model Comparison (For Direct Selection)
| Modello | Output Type | Tipo di circuito | Polarity | Supply Voltage | Standard Wire Colors | Key Features | Applications | Direct Interchangeability |
| E6B2-CWZ6C | Incremental | Open-collector | NPN | DC 5–24V | Brown/Blue/Black/White/Orange | General-purpose, most common, sink current output | Domestic PLCs, industrial control boards, MCUs | Basic type |
| E6B2-CWZ5B | Incremental | Open-collector | PNP | DC 5–24V | Brown/Blue/Black/White/Orange | Source current output, opposite to NPN | European/American PLCs, PNP input devices | Not interchangeable with CWZ6C |
| E6B2-CWZ1X | Incremental | Line drive | Differential | DC 5V only | Brown/Blue/Black/White/Orange/Yellow/Green/Gray | Strong anti-interference, long transmission (≥100m) | Long distance, high speed, high interference | Requires controller with differential input |
| E6B2-CWZ3E | Incremental | Voltage output | Voltage type | DC 5–12V | Brown/Blue/Black/White/Orange | Simple circuit, weak anti-interference, short distance | Low speed, short distance, simple equipment | Only for simple acquisition modules |
One-Sentence Selection Guide
- General equipment, domestic PLC → choose CWZ6C (NPN)
- Imported/European PLC, PNP required → choose CWZ5B
- Long distance, high interference, high speed → choose CWZ1X (line drive)
- NPN and PNP are NOT directly interchangeable; may cause no counting or port damage
OMRON E6B2 Series Encoder – Output Model Comparison
| Modello | Output Type | Circuit Form | Polarity | Supply Voltage | Output Phases | Max Transmission Distance | Anti-Interference | Main Applications | Interchangeability |
| E6B2-CWZ6C | Incremental | Open-collector | NPN | DC 5–24V | A/B/Z 3-phase | ≤20m | Normal | Domestic PLCs, MCUs, general industrial equipment | Not interchangeable with CWZ5B |
| E6B2-CWZ5B | Incremental | Open-collector | PNP | DC 5–24V | A/B/Z 3-phase | ≤20m | Normal | European/American PLCs, PNP input devices | Not interchangeable with CWZ6C |
| E6B2-CWZ1X | Incremental | Line drive (differential output) | Differential | DC 5V only | A/B/Z differential | ≤100m | Strong | High speed, long distance, high interference | Requires differential input support |
| E6B2-CWZ3E | Incremental | Voltage output | Voltage type | DC 5–12V | A/B/Z 3-phase | ≤10m | Weak | Low speed, short distance, simple modules | Only for simple circuits |
OMRON E6B2 Series Encoder – Accuracy Classification
The E6B2 is an incremental rotary encoder.
Its accuracy is independent of the output model (CWZ5B / CWZ6C / CWZ1X).
Output type only determines the signal circuit.
Accuracy is determined solely by resolution (pulses per revolution: P/R).
- Core Accuracy Classification: Resolution (P/R)
Resolution means how many pulses are output per revolution.
Higher pulse count = higher positioning/speed measurement accuracy.
This is the only accuracy grading standard for E6B2.
E6B2 Standard Resolution (Accuracy) Table
| Resolution (P/R) | Angle per Pulse | Accuracy Class | Applicazioni tipiche |
| 100 | 3.6° | Low | Simple speed detection, rough counting |
| 200 | 1.8° | Low | Basic speed control, counting |
| 360 | 1.0° | Medium-Low | General counting, simple positioning |
| 500 | 0.72° | Medium | General automation, trasportatori |
| 600 | 0.6° | Medium | Packaging machines, small equipment positioning |
| 1000 | 0.36° | Medium-High | Most common, machine tools, servo systems |
| 1024 | ≈0.3516° | Medium-High | Industrial positioning, length measurement |
| 2000 | 0.18° | Alto | High-precision positioning, high-speed detection |
| 2500 | 0.144° | Highest | Precision positioning, CNC, printing equipment |
- Electrical Accuracy (Fixed Factory Standard, Not Graded)
All E6B2 encoders with the same resolution have identical electrical accuracy:
Angular accuracy: ±0.5°
Phase A/B difference: 90°±45°
Max response frequency: 100 kHz
Allowable speed range: 0–6000 r/min
- Mechanical Accuracy (Universal for All Series)
Shaft radial play: ≤0.02 mm
Shaft axial play: ≤0.1 mm
Flange standard: φ50 mm, shaft φ6 mm
Protection class: IP50
- Riepilogo di una frase
- CWZ5B / CWZ6C / CWZ1X only change output circuit, not accuracy.
- Accuracy depends only on pulse count: 100–2500 P/R; higher number = more precise.
- Most common industrial accuracy: 1000 P/R (0.36°)
