The RMU400 is an absolute multiturn encoder designed for precise position measurement over multiple shaft revolutions. It provides 4,096 steps per revolution and records 4,096 revolutions, giving a 24-bit total measurement resolution. The encoder uses an SSI data interface and magnetic detection technology. It operates from 4.5 to 30 V DC and supports speeds up to 12,000 rpm. Its solid 6 mm shaft and compact cylindrical construction suit industrial motion-control applications.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The RMU400 combines singleturn and multiturn measurement in one encoder. Its 4,096 steps per revolution provide detailed angular position information. The multiturn section records up to 4,096 revolutions. The resulting measurement architecture provides 24-bit position information. This makes the encoder suitable for precision positioning applications.
The SSI interface provides synchronous serial transmission of position information. Gray code is used for the encoder output. Clock signals are received through TTL-compatible inputs. Data is transmitted synchronously through TTL-compatible outputs. This provides a direct digital interface for compatible motion controllers.
The RMU400 uses a 6 mm solid shaft. The encoder housing has a 66 mm diameter with an overall length of 78 mm. Magnetic sensing supports robust rotary measurement. The maximum electrical speed is 12,000 rpm. Reverse-polarity and short-circuit protection improve electrical reliability.
24-bit absolute measurement
4,096 steps/revolution
4,096 revolutions
SSI data interface
Gray-code output
6 mm solid shaft
Magnetic sensing
4.5–30 V DC
12,000 rpm
Short-circuit protection
Servo positioning
Machine-axis feedback
Rotary tables
Motor position monitoring
Robotic systems
Motion-control equipment
Industrial drives
Automated machinery
The RMU400 provides an accuracy of ±0.1 INL. Its high-resolution position information supports demanding positioning tasks. Absolute measurement allows the controller to obtain a defined position value. Multiturn capability extends the usable measurement range beyond one revolution. This combination supports precise automated motion.
The compact shaft and housing simplify integration into rotary machinery. SSI communication provides a deterministic digital position interface. The encoder can be connected to compatible motion controllers. Its 12,000 rpm capability supports high-speed rotary equipment. The design is suitable for industrial automation and positioning systems.
| Specification | Value |
|---|---|
| Model | RMU400 |
| Encoder type | Absolute multiturn |
| Resolution | 4,096 steps/revolution |
| Multiturn range | 4,096 revolutions |
| Total resolution | 24 bit |
| Communication | SSI |
| Detection system | Magnetic |
| Shaft design | Solid shaft |
| Shaft diameter | 6 mm |
| Operating voltage | 4.5–30 V DC |
| Protection class | III |
| Reverse polarity | Yes |
| Power-on delay | 500 ms |
| Settling time | 32 ms |
| Max. electrical speed | 12,000 rpm |
| Output code | Gray |
| Clock interface | TTL compatible |
| Data interface | TTL compatible |
| Signal transmission | Synchronous serial |
| Short-circuit protection | Yes |
| Accuracy | ±0.1 INL |
| Housing diameter | 58.6 mm |
| Overall length | 78 mm |
| Mounting | Solid shaft |
| Shaft material | Metal |
| Housing material | Metal |
| Connector | M12 |
| Environmental design | Industrial |
| Position type | Absolute |
| Manufacturer | IFM |
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