For the FG40KK-2500G-90G-NG-S encoder, we provide a precision-engineered 1:1 custom replacement created to replicate the original model in every functional and mechanical aspect. This solution is specifically targeted at users who face procurement delays, supply chain gaps, or discontinued-model issues. By basing the design strictly on the original encoder’s drawings and performance data, we reproduce all installation interfaces, output specs, environmental ratings, and application parameters exactly. As a result, the replacement encoder can be mounted and operated immediately, eliminating the need for system adjustments or rewiring and allowing users to maintain consistent operational performance.
Our custom replacement service has been widely adopted in global markets, with multiple customers from Southeast Asia, the Middle East, Indonesia, Russia, Ukraine, and South America selecting our specialized encoders for industrial modernization and equipment continuity. These regions have given favorable reviews due to the dependable operation of the replacements and our streamlined 15-day manufacturing lead time, which aligns with users’ urgent needs for fast delivery and minimal interruption to production lines.
Replacement solution image


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° |
