Pilz PNOZ s6 C 48-240VACDC 3 n/o 1 n/c - Manual (Page 4)

PNOZ s6
Operating Manual PNOZ s6
21398-EN-08
4
Safety features
The two-hand control relay meets the following safety requirements:
} The circuit is redundant with built-in self-monitoring
} The safety function remains effective in the case of a component failure
} The circuit prevents a further press stroke in the case of:
– Relay failure
– Contact welding
– Coil defect on a relay
– Open circuit
– Short circuit
} The unit has an electronic fuse.
Block diagram/terminal configuration
Input Input
A1 A2 S21 S22
=
Power
Feed-
back
(Reset)
S34
S11 S12
=
Y32
(~)
K1
K2
13 23 33
24 34 14
41
42
Interface expansion
unit
( )
* *
Centre: 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 non-marked area and the relay contacts: Basic insulation (overvolt-
age category III), safe separation (overvoltage category II)
Function description
} The two-hand control relay must be activated by simultaneously pressing two buttons
within 0,5 s . If one or both of the buttons are released, the unit interrupts the control
command for the hazardous movement.
} Reactivation: The output relays will not re-energise until both operator elements have
been released and then re-operated simultaneously.