The FG40KK-2000G-90G-NG is a proven incremental encoder model frequently used in steel mills, rolling lines, and heavy-duty metallurgy equipment. With 2000 pulses per revolution, it provides the accuracy required for medium-resolution applications while ensuring long-term reliability in harsh industrial conditions.
This encoder is especially valued in steel plants for its robust construction and dependable signal output, even in environments characterized by vibration, heat, and contamination. Its durability makes it a critical component for production continuity in demanding heavy industry settings.
We have developed a custom replacement solution for this model, designed to match the original encoder in both mechanical structure and electrical performance. This ensures that customers can replace units without modifying their existing systems, reducing downtime and avoiding unnecessary engineering costs.


Our alternative encoders are produced with a focus on industrial-grade reliability and extended service life, ensuring they stand up to the demanding requirements of 24/7 operations in metallurgy. For plant operators, this provides confidence that their automation processes will remain stable and efficient.
In addition, we offer flexible customization services, tailoring encoders to meet unique plant requirements or non-standard configurations. This allows operators to maintain their system performance even when original parts are unavailable or delayed.
To help customers overcome procurement challenges, we accept non-standard customization orders with a typical 15 working day lead time. This short delivery cycle allows steel industry operators to minimize downtime, ensuring their heavy-duty processes continue without interruption.
Technical data
| Parameter | Value |
|---|---|
| Pulse rates | |
| Standard pulse rates | 500, 600, 1000, 1024, 1200, 2000, 2048, 2400, 2500 |
| Special pulse rates | 4000, 4096, 4800, 5000, 8192, 10000, 12000, 16000, 16384, 20000, 25000, 40000, 50000 (further pulse rates according to customer specification) |
| Connection data | |
| Supply voltage | 12 V … 30 V DC (optional: 5 V DC) For UL and CSA Class 2 supplied |
| No load-current | approx. 50 mA at 24 V |
| Outputs | Current limited, short-circuit proof push-pull line driver with integrated impedance adaptation for 30 to 140 Ω lines |
| Pulse height (HTL) | approx. as supply voltage, output saturation voltage < 0.4 V at Iₗ 30 mA |
| Output current | max. 150 mA at 24 V (observe derating) |
| Internal resistance | 75 Ω bei 24 V |
| Slew rate | 200 V/μs with C_L 100 pF |
| Duty cycle | 1:1 ± 3 % for standard pulse rates 1:1 ± 5 % for special pulse rates up to 25000 pulses |
| Square wave displacement 0°, 90° | 90° ± 3 % for standard pulse rates 90° ± 5 % for special pulse rates up to 25000 pulses |
| Max. frequency | 200 kHz, Higher max. frequency on request |
| Special output voltage 5V (TTL) | |
| Pulse height | 5V, RS422-compatible (TIA/EIA-Standard) |
| Supply voltage | 12 … 30 V DC (optional: 5 V DC) For UL and CSA Class 2 supplied |
| Alternative Connection Data (from image(1)_1.png) | |
| Supply voltage | 5 V … 30 V DC For UL and CSA Class 2 supplied |
| No load-current | Approx. 120 mA at 5 V, approx. 50 mA at 24 V |
| Output signals | 2 sinusoidal signals A and B each with inverted signals Reference pulse with inverted signal Signal amplitude 1 V pp / R_L = 120 Ω Error signal and inverted signal Signal amplitude 5V |
| Resolution | 1024 signal periods |
| Duty cycle | 1 ± 0.1 |
| Phase shift A, B | 90° ± 1° |
