HEIDENHAIN ROQ 425 512 27S17-93 326171-01

HEIDENHAIN ROQ 425 Absolute Rotary Encoder

Description

A robust and reliable absolute rotary encoder from HEIDENHAIN, model ROQ 425. This encoder is designed for industrial applications requiring precise position feedback. It features a solid shaft and communicates via the industry-standard SSI interface, making it easy to integrate into existing control systems. Its wide operating voltage range ensures compatibility with various power supplies.

Specifications

• Manufacturer: HEIDENHAIN
• Product Type: Absolute Rotary Encoder
• Series: ROQ 425
• Part Number (Id.Nr.): 326 171-01
• Resolution: 512 steps/revolution (singleturn)
• Interface: SSI (Synchronous Serial Interface)
• Supply Voltage: 10V to 30V DC
• Shaft Type: Solid shaft

Label Info

• Model: ROQ 425 512 27S17-93
• Id.Nr.: 326 171-01
• S.Nr.: 8 255 037 C
• Voltage: 10V…30V

Application

Ideal for use in machine tools, robotics, packaging machines, and general automation systems where absolute position information is critical.

Country of Origin

Germany

CO2 Impact

By reusing this part, you prevent the emission of approximately 20.0 kg of CO2, which is comparable to the emissions from driving a standard car for 100 kilometers.

Availability

This item is a reliable, tested pre-owned part. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the SSI interface and what are its advantages?

The Synchronous Serial Interface (SSI) is a point-to-point serial communication protocol for digital sensors. Its main advantages are high transmission speed, reliable data transfer over long distances, and high resistance to electrical interference, making it ideal for industrial environments.

Is this encoder compatible with modern PLC systems?

Yes, most modern PLCs and motion controllers have input cards or modules that support the SSI interface. You will need to ensure your controller has a compatible SSI master port and configure it according to the encoder’s data format (e.g., Gray code, binary).

What does ‘absolute’ mean in the context of an encoder?

An absolute encoder provides the exact physical position of the shaft at all times, even after a power cycle. Unlike an incremental encoder, it does not need to be ‘homed’ or returned to a reference position on startup, which is critical for safety and efficiency in many applications.

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Last Update: Friday, March 13, 2026