13643878 AMG73 S W29 S2048 SEW EURODRIVE AS7W/AV7W Absolute Rotary Encoder

Product Specification

13643878 AMG73 S W29 S2048 SEW EURODRIVE AS7W/AV7W Absolute Rotary Encoder

1.Overview of the 13643878 AMG73 S W29 S2048 SEW EURODRIVE AS7W/AV7W

The 13643878 is an absolute rotary encoder from the AMG73 series developed by SEW-EURODRIVE of Germany for functional safety (FS) applications. The full model number is AMG73 S W29 S2048 AS7W/AV7W. Designed for DR/DRN/EDR series three-phase asynchronous motors, it provides SIL2/PL d-rated safe position and velocity feedback. It is widely used in applications requiring high-reliability absolute positioning, such as elevators, high-bay warehouses, robotics, and packaging lines.

2.Core Features:

Core Parameters

Encoder Type: Optical absolute, single-turn 2048 (12-bit) + multi-turn 24-bit, SSI protocol
Output Signal: ≈ 1 Vpp sine-cosine + 24-bit SSI absolute
Resolution: 2048 ppr (sine) / 0.088° (absolute)
Supply Voltage: 7–30 VDC, reverse polarity protected
Current Consumption: ≤ 120 mA (at 24 V)
Shaft Type: Ø 11 mm tapered "Spread Shaft," keyless and pinless, shock-resistant
Protection Rating: IP66 (shaft end) / IP67 (housing), -30°C…+100°C
Speed: ≤ 12,000 rpm
Weight: ≈ 0.4 kg
Connector: M23 12-pin quick-lock, AS7W = radial connector, AV7W = axial connector (optional within the same model)

Functional Safety

Complies with IEC 61508 SIL2, ISO 13849-1 PL d, IEC 61800-5-2 STO requirements

Combined with SEW MOVIDRIVE/MOVITRAC inverters, Safe Torque Off (STO) can be directly implemented.

Redundant optical scanning, single-turn and multi-turn dual-channel verification, >99% diagnostic coverage.

Supports advanced safety sub-functions such as Safely Limited Speed ​​(SLS) and Safe Position (SP) (requires a safety PLC).

Mechanical Design

Housing Ø 58 mm, length 60 mm, compatible with SEW DR71–DR225 motor end caps.

Tapered bushings for self-centering during installation, eliminating the need for a coupling and reducing installation errors.

Vibration resistance of 30 g and shock resistance of 300 g, suitable for high-speed reciprocating mechanisms.

Optional stainless steel housing (ordering suffix -VA) for use in food or marine environments.

Typical Applications

Absolute position and velocity dual closed-loop control for elevator traction motors.

Safe positioning of horizontal and vertical axes of high-bay warehouse stacker cranes.

Robot J Absolute zero-position memory for the shaft, eliminating the need to reset to zero during power outages.

Wind turbine pitch control system with 360° real-time blade angle detection.

Safe, synchronized control of the packaging machine's servo blade axis.

High-Precision Absolute Measurement: This encoder offers multi-turn resolution up to 65,536 revolutions (16-bit) combined with high-precision single-turn resolution of 2,048 cycles per revolution. This high resolution ensures extremely precise position information for complex motion control.

Advanced Signal Transmission and Interfaces: This encoder supports RS485 for data communication and is compatible with open real-time communication protocols such as BiSS C. This ensures fast, secure, and interference-resistant real-time data exchange between the controller and sensor.

Rugged Construction and Wide Environmental Compatibility: The encoder boasts an IP66 rating, effectively protecting against dust intrusion and high-pressure water jets. It operates in a wide temperature range (-30°C to +60°C) and utilizes blue LED technology, enhancing signal contrast and accuracy while extending service life and contamination resistance in harsh industrial environments.

Efficient Integration and Compatibility: Its compact design allows for easy integration into servo motors with a 40mm edge size, effectively saving installation space. Its stator coupling design and extended shaft structure also make it easy to connect to various motors and transmission systems

3.Product details pictures

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