The SICK FORK SENSORS WF120 series, including models WF120-40B410, WF120-40B416, WF120-60B410, and WF120-95B41CA00, are engineered for precise object detection in automated processes. These fork sensors utilize infrared LED light (850 nm) to detect objects as small as 0.2 mm, making them ideal for label detection, edge control, and part presence verification. With a compact fork design (120 mm width, 42 mm depth) and a rugged aluminum housing rated IP65, they withstand harsh industrial conditions. The sensors offer selectable PNP/NPN outputs and light/dark switching, adjustable via plus/minus buttons with a key lock for security. High-speed performance includes a 10 kHz switching frequency and 100 µs response time, ensuring reliable operation in high-throughput applications. Supply voltage ranges from 10 V DC to 30 V DC, with comprehensive circuit protection including reverse polarity and short-circuit protection.
| Parameter |
Specification |
| Functional principle |
Optical detection principle |
| Dimensions (W x H x D) |
10 mm x 150 mm x 57 mm |
| Housing design (light emission) |
Fork shaped |
| Fork width |
120 mm |
| Fork depth |
42 mm |
| Minimum detectable object (MDO) |
0.2 mm |
| Label detection |
✔ |
| Light source |
LED, Infrared light |
| Wave length |
850 nm |
| Adjustment |
Plus/minus button (Sensitivity, light/dark switching, key lock) |
| Teach-in mode |
— |
| Output function |
Light/dark switching, selectable via button |
| Supply voltage |
10 V DC … 30 V DC 1) |
| Ripple |
< 10 % 2) |
| Current consumption |
40 mA |
| Switching frequency |
10 kHz 3) |
| Response time |
100 µs |
| Stability of response time |
± 20 µs |
| Jitter |
40 µs |
| Switching output |
PNP/NPN |
| Switching output (voltage) |
PNP: HIGH = VS– ≤ 2 V / LOW approx. 0 V |
| - |
NPN: HIGH = approx. VS / LOW ≤ 2 V |
| Switching output |
Light/dark switching |
| Output current Imax. |
100 mA |
| Initialization time |
100 ms |
| Connection type |
Male connector M8, 4-pin |
| Ambient light immunity |
Sunlight: ≤ 10,000 lx |
| Protection class |
III 4) |
| Circuit protection |
UV connections, reverse polarity protected |
| - |
Output Q short-circuit protected |
| - |
Interference pulse suppression |
| Enclosure rating |
IP65 |
| Weight |
Approx. 36 g … 160 g 5) |
| Housing material |
Metal, Aluminum |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22