Eaton easySafety, Manual

Page: 458 / 695

Safety function blocks
454
02/16 MN05013001Z EN
Contacts
In the safety circuit diagram, the contacts OS..Q1 to OS..Q5
transfer the operating mode. They close according to the
operating mode. Example: if operating mode 2 is selected,
the contact OS..Q2 closes.
If the OS..ER contact is wired in the standard and/or safety
circuit diagram, it indicates the presence of an error by
closing.
Memory requirement
The OS function block requires 24 bytes of memory.
Operation of the function block
The input coils OS..I1 to OS..I5 accept the switch positions of
the operating mode switch.
The enable coil OS..UL allows a safe change of the operating
mode.
If the mode change is permitted, the new operating mode is
accepted as soon as the acceptance coil OS..SM picks up.
Error detection and acknowledgement
The operating mode switch function block detects the simul-
taneous selection of more than one operating mode.
General information on Errors and how the easySafety reacts
to them is provided in section “Diagnostics using the ER
contact” on page 622.
Contact Function
OS..Q1
To
OS..Q5
Operating mode: 1 to 5
OS..ER
Error message (contact closed -> Error)
Error Error acknowledgement
Simultaneous selec-
tion of more than one
operating mode Selection of only one operating mode,
allow operating mode change via OS..UL
and pick up of the acceptance coil OS..SM