For the GM401.Z21 encoder, we deliver a customized replacement solution developed specifically for wind turbine applications. This solution is based on a 1:1 non-standard customization process, ensuring perfect mechanical and electrical compatibility with the original encoder. The manufacturing period is controlled within 10–15 working days, significantly shortening lead times compared to typical imports. This allows operators to minimize turbine downtime, improve maintenance efficiency, and avoid costly operational disruptions. By choosing our replacement service, customers gain a dependable alternative that offers consistent quality, short delivery cycles, and reliable performance.
The GM401.Z21 replacement encoder reflects the robust design principles of the Baumer GM400 series, optimized for accurate and stable operation in wind power generation systems. As a multiturn encoder with SSI communication, it employs an optical sensing method that ensures long-term accuracy and durability. The encoder supports up to 14-bit resolution per revolution for singleturn feedback and 16-bit resolution for multiturn capability. With a clamping flange for easy installation, the device also features electronic zero-point adjustment to simplify commissioning. The encoder includes a counting direction input and can be configured with additional incremental outputs, offering versatile signal options for integration into control systems. Its design ensures maximum resistance to magnetic fields, providing stable operation in environments with strong electromagnetic influences such as wind turbine nacelles, power generators, and heavy industrial machinery. This combination of features guarantees high precision, operational reliability, and extended service life.
Replacement model real product photo.
Technical Data
Electrical Ratings
Parameter
Values
Voltage supply
10…30 VDC5 VDC ±10 %
Reverse polarity protection
Yes (10…30 VDC) / No (5 VDC)
Consumption w/o load
≤50 mA (24 VDC)≤80 mA (5 VDC)
Initializing time typ.
20 ms after power on
Interface
SSIIncremental A 90° B (optional)
Function
Multiturn
Steps per revolution
≤16384 / 14 bit
Number of revolutions
≤65536 / 16 bit
Absolute accuracy
±0.025°
Sensing method
Optical
Code
Gray or binary
Code sequence
CW/CCW coded by connection
Inputs
SSI clock; Control signals UP/DOWN inv. and zero; SSI data outputs RS422
EN 60068-2-6Vibration ≤0.75 mm - 10 - 58 Hz, 10 g - 58 - 2000 HzEN 60068-2-27Shock 200 g, 6 ms
Weight approx.
400 g
Connection
Connector M23, 12-pinConnector M12, 8-pinCable 1 m
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