The FG4S‑600G‑90G‑NG incremental encoder is a legacy model widely used in heavy industrial applications, including steel rolling mills, metallurgical plants, and automated conveyor systems. With production discontinued, sourcing the original encoder has become increasingly difficult. To address this challenge, we offer a 1:1 custom replacement solution that replicates the mechanical dimensions, shaft size, electrical interfaces, and pulse output of the original unit.
Designed for harsh industrial environments, this replacement encoder ensures precise incremental feedback, stable position signals, and reliable operation under vibration, dust, and temperature fluctuations. By providing a direct 1:1 replacement, it allows seamless integration into existing systems without any modifications to equipment, wiring, or control logic.
Our custom replacement solutions are ideal for companies facing procurement difficulties with discontinued FG4S‑600G‑90G‑NG models. Optional configurations are available for non-standard pulse rates or voltage outputs, ensuring tailored solutions for specific operational requirements. This approach minimizes downtime and maintains production continuity while delivering reliable and accurate encoder performance.
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 |
