Pilz PZE X4V 8/24VDC 4n/o - Manual (Page 6)

PZE X4V8
Operating Manual PZE X4V8
1003204­EN­05 6
} Earth fault in the input circuit:
The output relays de­energise and the safety contacts open.
Block diagram/terminal configuration
8A 8B 4A 7B 5A 6A 6A 7A
Delay
*
6B 6B 5B 4B
*Insulation between the non­marked area and the relay contacts: Basic insulation (over­
voltage category III), Protective separation (overvoltage category II)
Function description
The contact expansion module is an add­on device with selectable delay­on de­energisa­
tion, and it is used to expand a safety circuit. The contact expansion module is driven by a
base unit (e. g. emergency stop relay).
} Functional procedure after closing the safety contacts of the base unit:
– The supply voltage is present at the input (A1) of the contact expansion module.
– Close the safety contacts 17­18, 27­28, 37­38 and 47­48.
– The LEDs "CH. 1" and "CH. 2" are lit.
} Functional procedure after opening the safety contacts of the base unit:
– There is not supply voltage at input (A1) of the contact expansion module.
– Safety contacts 17­18, 27­28, 37­38 and 47­48 open after the delay time.
– The LEDs "CH. 1" and "CH. 2" go out.