The FG40KK‑2500G‑90G‑NG‑S incremental encoder is a precision feedback device intended for industrial motion control applications where consistent incremental signals are critical. As this legacy configuration becomes harder to obtain through conventional procurement channels, a 1:1 custom replacement solution has been developed to replicate the original unit’s mechanical dimensions, electrical interfaces, and functional output characteristics. This engineered alternative enables seamless integration into existing systems without modification to mounting arrangements, wiring harnesses, or control logic.
Designed for demanding industrial environments, the replacement encoder delivers reliable performance in applications spanning automated production lines, conveyor systems, motors, and material handling equipment. Its construction supports precise pulse resolution and consistent duty cycle behavior, making it suitable for high‑speed incremental feedback and motion synchronization tasks. By carefully reproducing the original specification, this solution helps maintenance teams address supply constraints, reduce downtime, and extend equipment operational life.
The custom replacement service is supported by streamlined production workflows, typically achieving a predictable delivery cycle, and can also accommodate optional configurations tailored to specific operational requirements. This approach ensures a stable source of high‑quality replacements for equipment originally dependent on the FG40KK‑2500G‑90G‑NG‑S model.


Technical Datasheet
Pulse rates
| Category | Value |
|---|---|
| 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(further pulse rates according to customers specification) |
Connection data
| Parameter | Details |
|---|---|
| Supply voltage | 12 V … 30 V DCFor 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 Cₗ 100 pF |
| Duty cycle | 1:1 ± 3 % for standard pulse rates1:1 ± 5 % for special pulse rates up to 25000 pulses |
| Square wave displacement 0°, 90° | 90° ± 3 % for standard pulse rates90° ± 5 % for special pulse rates up to 25000 pulses |
| Max. frequency | 200 kHz, Higher max. frequency on request |
Special output voltage 5V (TTL)
| Parameter | Details |
|---|---|
| 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 |

