Pilz PNOZ s11 - Unit Features; Safety Features; Block Diagram and Terminals

PNOZ s11
Operating Manual PNOZ s11
21693-EN-11
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Unit features
} Positive-guided relay outputs:
– 8 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
} LED for:
– Input status, channel1
– Input status, channel2
– Switch status of the safety contacts
– Fault
} Plug-in connection terminals (either spring-loaded terminal or screw terminal)
} See order reference for unit types
Safety features
The unit meets the following safety requirements:
} The contact expansion module expands an existing circuit. As the output relays are mon-
itored via the base unit's feedback loop, the safety functions on the existing circuit are
transferred to the contact expandsion module.
} The safety function remains effective in the case of a component failure.
} Earth fault in the feedback loop:
Detected, depending on the base unit that is used.
} Earth fault in the input circuit:
The output relays de-energise and the safety contacts open.
Block diagram/terminal configuration
*Safe separation from non-marked area in accordance with EN 60947-1,
6 kV, basic insulation between all safety contacts.