The FG4S‑800G‑90G‑NG incremental encoder is a legacy model widely used in heavy-duty industrial applications, including steel mills, rolling lines, and automation systems. With the original model discontinued, sourcing it has become a significant challenge for industrial operators. To ensure uninterrupted production, we provide a 1:1 custom replacement solution that replicates the original encoder’s mechanical dimensions, shaft design, electrical interfaces, and pulse output characteristics.
This custom replacement is designed for robust performance in harsh industrial environments, maintaining precise incremental feedback and stable signal output for control systems. By offering a direct 1:1 replacement, equipment integration is seamless, avoiding costly modifications or system downtime. The fast production cycle ensures a quick response to operational needs, keeping machinery running efficiently.
Our solution is ideal for metallurgical, steel, and heavy industrial applications where reliability, precision, and durability are critical. Optional custom configurations, including non-standard pulse rates and electrical interfaces, are available to meet specific operational requirements.
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 |
