Manual
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
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
within0,5 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.