Pilz PNOZ s4 C 48-240VACDC 3 n/o 1 n/c - Manual (Page 6)

PNOZ s4
Operating Manual PNOZ s4
21396­EN­13 6
} 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, channel 1
– Input status, channel 2
– Switch status of the safety contacts
– Start circuit
– Errors
} Plug­in connection terminals (either spring­loaded terminal or screw terminal)
Safety features
The relay meets the following safety requirements:
} The circuit is redundant with built­in self­monitoring.
} The safety function remains effective in the case of a component failure.
} The correct opening and closing of the safety function relays is tested automatically in
each on­off cycle.
} The unit has an electronic fuse.
Block diagram/terminal configuration
Input Input
A1 A2 S21 S22
=
Power
Reset/
Start
S34
S11 S12
=
Y32
(~)
K1
K2
13 23 33
24 34 14
41
42
Interface
expansion
unit
( )
* *
Fig.: Rotary cam arrangement monitoring Front view with cover, right: Front view without cover
Grey highlighted area: Applies only with U
B
= 48 – 240 V AC/DC
*Insulation between the non­marked area and the relay contacts: Basic insulation (over­
voltage category III), Protective separation (overvoltage category II)