Safety Function
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.
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.
The remote I/O serves to extend the I/O level of HIMax and HIMatrix controllers, and is
connected to them via safeethernet. The remote I/O itself is not able to run a user program.
The HIMatrix remote I/Os are not multi-master capable.
The remote I/O is suitable for mounting in Ex-zone 2. see Chapter 4.1.4.
The device has been certified by the TÜV for safety-related applications up to SIL 3 (IEC
61508. IEC 61511 and IEC 62061), Cat. 4 (EN 954-1) and PL e (EN ISO 13849-1). Further
safety standards, application standards and test standards are specified in the certificate
available on the HIMA website.
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| User name | Member Level | Quantity | Specification | Purchase Date | 
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