HEIDENHAIN ERN1387 ID 749147-59 ERN 1387 series

1. Model and ID analysis

1. Basic model: ERN1387

Series positioning: It belongs to the ERN 1300 series incremental encoder, featuring high precision and high reliability, and is suitable for industrial automation (such as CNC machine tools, servo systems, and precision machinery).

Core features:

Standard resolution 2048 lines/turn (higher precision can be achieved through electronic subdivision).

The output signal is a differential sine wave (1Vpp) or TTL/RS422 level, with strong anti-interference ability and support for long-distance transmission (up to 100 meters).

It uses a stainless steel shaft and metal housing, with a protection level of IP64 (dustproof and splashproof), suitable for harsh industrial environments.

2. Meaning of ID 749147-59

Heidenhain's ID number usually includes interface type, power supply specifications, cable configuration, version information, etc. According to the official naming rules:

749147:

Represents the power supply voltage and signal type: it may be 5-24V wide voltage input (compatible with the wide voltage requirements of modern servo systems), and the output signal is RS422 differential signal (supporting higher-speed data transmission).

In some IDs of the same series, "749147" corresponds to the EnDat 2.2 protocol interface (but please note: the ERN1387 series is mainly incremental, EnDat is usually used for absolute encoders, and here it may be incremental signal + specific interface).

59:

May represent cable length or connector type: for example, "59" corresponds to a 5-meter shielded cable, and the interface is a Heidenhain standard 12-pin plug (model such as 538703-XX), or a specially customized anti-bending cable (suitable for mobile axis applications).

II. Key parameters (refer to official typical values)

Parameter category Specific specifications

Resolution 2048 lines/turn (incremental, which can be subdivided to nanometer accuracy by the driver).

Output signal - Differential sine wave (1Vpp)

- TTL/RS422 level selectable (depending on ID configuration, 749147 may default to RS422).

Supply voltage 5-24V DC (wide voltage design, adaptable to different servo systems, reducing power compatibility issues).

Mechanical specifications - Shaft diameter: 6 mm (stainless steel, with keyway)

- Mounting method: synchronous flange (Ø30 mm) with anti-loosening screws.

Protection level IP64 (suitable for machine tool coolant and dust environment).

Maximum speed 8000 rpm (meets the needs of high-speed spindles or robot joints).

Temperature range - Working: -10°C ~ +70°C

- Storage: -25°C ~ +80°C (non-condensing).

Cable/Connector - Standard 5m shielded cable, 12-pin plug (supports custom extension to 30m)

- Plug model may be 538703-59 (needs to match the drive interface).