PNOZ s2
Operating Manual PNOZ s2
21394-EN-11
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Unit features
} Positive-guided relay outputs:
– 3 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
} Protective separation of safety contacts from all other circuits
} 1 semiconductor output
} Connection options for:
– E-STOP pushbutton
– Safety gate limit switch
– Start button
} A connector can be used to connect 1 PNOZsigma contact expansion module
} Operating modes can be set via rotary switch
} LED indicator for:
– Supply voltage
– Input status, channel1
– Input status, channel2
– Switch status of the safety contacts
– Start circuit
– Errors
} Plug-in connection terminals (either spring-loaded terminal or screw terminal)
} See order reference for unit types
Safety features
The safety relay meets the following safety requirements:
} The circuit is internally redundant with built-in self-monitoring.
} The safety device remains effective in the case of a component failure.
} The correct opening and closing of the safety device relays is tested automatically in
each on-off cycle.
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