The FGH4K-1024G-90G-NG/20P incremental encoder is a widely used heavy-duty model offering a balanced resolution for both speed feedback and basic position monitoring. With 1024 pulses per revolution, it is commonly found in rolling equipment, drive systems, and industrial machinery that operate continuously under mechanical stress.
For many plants, this encoder has been in service for years as part of a validated control system. When the original model becomes difficult to obtain, changing to a different encoder type can introduce risks such as signal incompatibility or unexpected control behavior.
A 1:1 custom replacement encoder can be supplied to address this issue. The replacement unit is developed to match the original specifications, including pulse count, housing dimensions, shaft interface, output signals, and connection method. This allows a direct swap without changes to mounting hardware or control parameters.
Each unit is assembled using industrial-grade components and verified through functional testing to ensure stable signal output and reliable performance in demanding operating environments.
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 |
