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

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

4. Related products