The FGH4K-8192G-90G-NG/20P is a high-resolution heavy-duty incremental encoder designed for applications that require precise speed and position feedback under continuous load. With 8192 pulses per revolution, it is often used in rolling mills, precision drive systems, and equipment where motion control accuracy directly affects product quality.
In existing installations, this encoder is typically integrated into the system during the early commissioning stage. Once the control logic and mechanical layout are fixed, replacing it with a different specification can introduce unnecessary risks. However, sourcing the original model has become increasingly difficult for many users.
To ensure operational continuity, a 1:1 custom replacement encoder can be produced based on the original configuration. The replacement unit matches the pulse resolution, mounting dimensions, shaft interface, electrical signals, and connection method, allowing direct installation without changes to the machine structure or control program.
Before delivery, each encoder undergoes signal verification and operational testing to ensure stable output and long-term reliability. This approach provides a practical and low-risk solution for maintaining high-resolution industrial systems already in service.
Technical Datasheet
| 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 customers specification) |
| Connection data | |
| Supply voltage | 12 V ... 30 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 $I_L$ 30 mA |
| Output current | max. 150 mA at 24 V (observe derating) |
| Internal resistance | 75 Ω at 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 % or 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 |
