HIMA F3322 

The safety-related F3 DIO 20/8 02 remote I/O is a compact system in a metal housing with 

20 digital inputs and 8 digital outputs. 

The remote I/O is available in various model variants for SILworX and ELOP II Factory, see 

Table 4. 

Remote I/Os are connected to individual HIMax or HIMatrix controllers via safeethernet. They 

are used to extend the I/O level, but are not able to run any user program by themselves. 

The remote I/O is suitable for mounting in Ex-zone 2, see Chapter 4.1.4. 

The device is TÜV-certified for safety-related applications up to SIL 3 (IEC 61508, IEC 61511 

and IEC 62061), Cat. 4 and PL e (EN ISO 13849-1) and SIL 4 (EN 50126, EN 50128 and 

EN 50129). 

Further safety standards, application standards and test standards are specified in the 

certificates available on the HIMA website.

The remote I/O is equipped with safety-related digital inputs and outputs. The input values on 

the inputs are safely transmitted to the connected controller via safeethernet. The outputs are 

safely assigned their values by the connected controller via safeethernet. 

3.1.1 Safety-Related Digital Inputs 

The remote I/O is equipped with 20 digital inputs. The state (HIGH, LOW) of each input is 

signaled by an individual LED. 

Mechanical contacts without own power supply or signal power source can be connected to the 

inputs. Potential-free mechanical contacts without own power supply are fed via an internal 

short-circuit-proof 24 V power source (LS+). Each of them supply a group of 4 mechanical 

contacts. Figure 1 shows how the connection is performed. 

With signal voltage sources, the corresponding ground must be connected to the input (L-), see 

Figure 1.

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