HIMA F3222 8-channel input module

The HIMA F3222 is an 8-channel input module specifically engineered for use with proximity switches that comply with the EN 60947-5-6 (NAMUR) standard. The HIMA F3222 integrates two key functional features: safety isolation to ensure signal integrity and prevent interference, and dedicated feeding capability to power the connected proximity switches—making the HIMA F3222 a critical component for reliable signal acquisition in industrial automation and safety-critical systems.

As a CE-certified product from HIMA (HIMA Paul Hildebrandt GmbH + Co KG), the HIMA F3222 is designed to meet strict industrial performance requirements. The electrical parameters of the HIMA F3222 are optimized for NAMUR proximity switch compatibility: the HIMA F3222 has a precise switching point of 1.65 mA ± 0.2 mA, a switching current difference of approximately 0.3 mA, and a switching time of around 10 ms to ensure timely signal response. The HIMA F3222 provides a dedicated sensor supply voltage range of 7.7...9 V to power the proximity switches, while the HIMA F3222’s own operation relies on two power inputs: 5 V DC (drawing 40 mA) and 24 V DC (drawing 75 mA).

For physical installation and wiring, the HIMA F3222 features a compact design that requires only 4 SU (Terminal Equipment units) of space, enabling easy integration into standard industrial control racks. The HIMA F3222 uses a Z7108 front cable plug (with lead marking specified as Z 7108/3222/C..) and is compatible with LiYY 16×0.5 mm² cables for signal transmission. The HIMA F3222’s 8 independent input channels utilize differential wiring, with each channel connected to specific terminals (e.g., Channel 1 to terminals d2 and d4, Channel 8 to terminals d30 and d32) and color-coded connections (e.g., white for d2, brown for d4) to simplify wiring and maintenance. The HIMA F3222 also includes LED terminals (z4 to z30) for real-time per-channel status indication, which aligns with the signal logic of the HIMA F3222: an input current greater than 2.1 mA triggers an H signal (activating the control channel), while an input current less than 1.2 mA triggers an L signal (deactivating the control channel).

Additionally, the HIMA F3222 incorporates industrial-grade design elements such as screen connections to reduce electromagnetic interference and compatibility with standard I/O bus interfaces, as depicted in the block diagram of the HIMA F3222. It is important to note that HIMA reserves the right to modify equipment specifications without prior notice, ensuring the HIMA F3222 can adapt to evolving industrial needs while maintaining core functionality.