MAR-MC52A
Hollow-Shaft Multi-Turn Absolute Encoder
Hollow-shaft absolute encoder Offers compact dimensions for increased design flexibility.
Nikon absolute encoders (rotary encoders) incorporate proprietary optical and M-sequence absolute pattern technologies to combine high reliability with compact dimensions. Used in a broad range of industrial machinery, including industrial robots for automotive production lines and machine tools, they have won widespread acclaim as standard sensors capable of detecting the rotational displacement of robot arms and other equipment as absolute values.
Features
1. Two different inner diameter models requiring no signal adjustments
Proprietary Nikon optics help achieve a reliable design that allows for gap and thrust variations.
Two models are available with disk diameters of ⌀15 mm and ⌀24 mm (maximum shaft diameter ⌀25 mm), providing functionality without signal adjustments.
2. High resolution
Provides up to 24-bit resolution.
3. High operating temperatures
The MAR-MC52A features a guaranteed operating temperature of 95°C.
Improved resistance to various operating-environment parameters increases flexibility in motor and equipment design.
Applications
- Ideal for hollow actuators used in multi-joint robots.
Specifications
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| Model | MAR-MC52A | |
|---|---|---|
| Resolution | Single-turn | 20 bit (1,048,576 positions/rev.) Optional: 22 bit, 24 bit |
| Multi-turn signal | 16 bit (65,536 revolutions) | |
| Responsive revolution speed | With mains power | 6,000 min-1 |
| With backup battery | 6,000 min-1 | |
| Power source voltage | With mains power | 5 V DC |
| With backup battery | 3.6 V DC | |
| Current used | During normal operations | 65 mA (TYP) |
| Using external battery | 30 μA (TYP) | |
| Operating temperature range | Models without electric double layer capacitor | ‒20 to +95°C |
| Models with electric double layer capacitor | ‒20 to +85°C | |
| Moment of inertia for shaft | 6.03 × 10-6 kg·m2 ⌀15 mm shaft disk: 67.0 × 10-7 kg·m2 ⌀24 mm shaft disk: 60.3 × 10-7 kg·m2 |
|
| Allowed rotational angular velocity | 1.0 × 105 rad/sec2 | |
| Communication protocol | A-format® | |
| Transmission standard | EIA standard RS-485 compliant | |
| Transmission method | NRZ half-duplex serial communications | |
| Baud rate | 2.5 Mbps (Optional: 4 Mbps to 16 Mbps) | |
| Number of signal wires | 4 (Optional: 6) | |
| Memory access development space | 3,840 bits (240 addresses × 16 bits) | |
| Temperature sensor | Supported | |
| Bus connectivity | Supported | |
| Bus connectivity options | Encoders can be connected for up to 8 axes. | |
| Dimensions | External diameter (⌀) | 55 mm |
| Height | 14.5 mm | |
| Disk inner diameter (⌀) | 15 mm or 24 mm | |
Dimensional Drawings
