HEIDENHAIN ROD426 3600 27S12-03 Rotary encoder TTL

Buy online your HEIDENHAIN ROD426 3600 27S12-03 Rotary encoder TTL from UK e-store Cnc-shopping UK, specialist in CNC machine-tools spare parts.

The HEIDENHAIN ROD426-3600-27S12-03 is an incremental shaft rotary encoder designed to provide position and speed feedback for CNC axes, spindles, and servo motors. It is a suitable industrial spare part and replacement unit for machine maintenance and retrofit applications.

Manufactured in Germany, this encoder features 3,600 pulses per revolution, TTL RS-422 differential outputs (A, /A, B, /B, Z, /Z), a 5 V DC ±10% power supply, and a maximum scanning frequency of 300 kHz. It includes a Ø 58 mm synchro flange, a Ø 6 mm solid shaft, a 12-pin M23 male connector, an IP64 protection rating, and an operating temperature range of -40°C to +100°C.

Identified by HEIDENHAIN ID number 376846-M6, this encoder is suitable for replacing a defective unit in a compatible installation. Resolution, output signals, pin configuration, and mechanical dimensions should be verified before replacement.

Cnc-shopping can supply this HEIDENHAIN encoder as a tested unit, with a commercial warranty, protective industrial packaging, and worldwide shipping with dispatch typically within 3 days, subject to availability. Obsolete-part sourcing, repair, and exchange services may also be available.

Frequently asked questions about ROD426-3600-27S12-03:

Is this encoder TTL or 1 Vpp?
This ROD 426 variant provides TTL differential outputs suitable for 5 V RS-422 inputs on CNC drives and motion cards. It is not the 1 Vpp sine-wave version.

What does 3600 lines mean for my control counts?
3600 lines per revolution yield quadrature evaluation up to 14400 counts per revolution on most controls. Verify your drive or control scaling before commissioning a replacement unit.

Where is this encoder typically installed?
It is usually mounted as a shaft-coupled feedback device on servo motors, gear stages or auxiliary spindle drives. Use a flexible coupling and observe standard alignment practices to protect the encoder bearings.

How do I confirm compatibility with my CNC drive?
Match three items: signal type TTL, the pulses per revolution 3600 and the mechanical/connector variant identified by the suffix. If these align with the original unit, the replacement is typically straightforward.

Can this be used as a refurbished or exchange unit?
Yes, it is commonly handled as a refurbished unit or through an exchange service to speed up repairs. This approach helps reduce machine downtime while the faulty encoder is evaluated or repaired.