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The 729798-01 is an incremental, extra-heavy-duty hollow shaft rotary encoder (model XHI 861) manufactured by Leine & Linde. It typically features a High Current HTL output and a resolution of 1024 pulses per revolution (ppr).
Electrically insulated shaft
High vibration and shock resistance
Performance hollow shaft encoder for heavy duty industries
The 729798-01 (XHI 861) encoder features 6-channel differential output, providing complementary A, A̅, B, B̅, Z, Z̅ square wave pulse sequences. A built-in high-current HTL (HCHTL) interface is designed to improve voltage threshold and drive capability, overcoming capacitance in long cable transmissions and suppressing electromagnetic interference. At a mechanical speed limit of up to 6000 rpm, the system maintains a 100 kHz scan frequency, ensuring high-frequency, low-latency feedback for inverters and PLCs.
The 729798-01 (XHI 861) achieves fast, highly compatible connections with electrical noise isolation via an industrial shielded twisted-pair cable equipped with a standard M23 (12-pin) connector. The system utilizes an external anti-rotation arm to lock the housing rotation while accommodating axial and radial movement, ensuring highly reliable integration with mainstream VFD/PLC closed-loop control circuits from ABB, Siemens, and other manufacturers.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
LEINE LINDE 729798-01 Incremental Shaft Encode Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Wind Power Generation
Installed on the main shaft or generator shaft of wind turbines to monitor rotor speed, providing reference data for grid-connected frequency control via inverters.
Paper & Pulp Industry
Used for closed-loop speed control of continuous drying cylinders and press rolls in paper production lines to maintain constant paper tension between stages.
Oil & Gas
Installed on the frequency-controlled electric drive shafts of drilling drawworks and heavy-duty mud pumps to control drilling tool hoisting speed and strokes.
Hydroelectric Power
Mounted on the rotor shafts of hydro-generator units to continuously track rotational speed, coordinating with governors to adjust gate openings for grid frequency stabilization.
Chemical Industry
Used on the drive shafts of large vertical agitators in high-viscosity material reactors to transmit rotational speed to the control center for controlling material shear rates during reaction cycles.
Metallurgical Blast Furnace Blowing
Connected to the drive shafts of high-speed centrifugal blowers for blast furnace oxygen generation and air supply, used for closed-loop speed control of large variable-frequency motors.
When installing and maintaining the 729798-01 encoder, the insulated shaft sleeve must remain intact and free from mechanical machining or forced impacts to prevent bearing electrical erosion or optical disk fracturing. The external torque arm and cable entry glands must be securely fastened to accommodate axial play and block the ingress of moisture and dust.
Electrically, wiring must be performed under de-energized conditions according to the standard pin layout, and shielded twisted-pair cables must be properly grounded at a single end to isolate high-frequency electromagnetic interference from variable frequency drives, preventing signal distortion.
Alternative Names
Alternative Names
729798 01729798-O1729798-0I729798-OI
Technical notes
Technical notes
The 729798-01 is a Swedish-manufactured, heavy-duty hollow-shaft incremental optical encoder used in conjunction with large industrial electric motors or drive systems. The device utilizes a hollow-shaft configuration to slip directly onto the drive shaft, incorporating an insulated layer within the sleeve to break external induced shaft currents and protect internal bearings. In terms of technical specifications, it supports a wide auxiliary power input from 9 to 30 Vdc, features a physical resolution of 1024 PPR, and outputs 6-channel High-Current HTL (HCHTL) push-pull industrial signals comprising A, B, Z, and their inverted channels, with a maximum safe rotational speed of 6000 rpm. Furthermore, the overall enclosure meets an IP67 protection rating (IP66 at the shaft inlet) and operates across a temperature band of -20 °C to +85 °C, withstanding high mechanical vibration frequencies and shocks to provide continuous speed, directional, and angular position data to control systems and frequency inverters.
729798-01 is a heavy-duty incremental hollow-shaft optical rotary encoder manufactured by Leine Linde in Sweden (typically model XHI 861900220-1024).
What is the primary purpose of 729798-01?
It is mounted on rotating shafts to continuously monitor the exact rotational speed, direction, and angular position of heavy-duty industrial electric motors or drive systems.
How do you properly install the 729798-01 encoder?
Since 729798-01 features a hollow shaft design, it must be slipped directly onto the equipment's drive shaft, clamping the insulated sleeve tightly, and securing the torque arm to absorb mechanical vibrations.
What is the resolution of 729798-01?
The physical resolution of this encoder is 1024 PPR (Pulses Per Revolution).
What is the operating temperature range for 729798-01?
This product is specified to operate reliably across an extreme ambient temperature range of -20 °C to +85 °C.
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