PNOZ X7
Operating Manual PNOZ X7
19692-EN-06
27
Service life graph
The service life graphs indicate the number of cycles from which failures due to wear must
be expected. The wear is mainly caused by the electrical load; the mechanical load is negli-
gible.
Number of cycles x 1000
Switching current (A)
Example
} Inductive load: 0.2 A
} Utilisation category: AC15
} Contact service life: 4 000 000 cycles
Provided the application to be implemented requires fewer than 4 000 000 cycles, the PFH
value (see Technical details) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all output
contacts. With capacitive loads, any power surges that occur must be noted. With DC con-
tactors, use flywheel diodes for spark suppression.
Order reference
Product type Features Connection type Order no.
PNOZ X7 42 VAC Screw terminals 774 058
PNOZ X7 48 V AC Screw terminals 774 049
PNOZ X7 110 V AC Screw terminals 774 053
PNOZ X7 115 V AC Screw terminals 774 054
PNOZ X7 120 V AC Screw terminals 774 055
PNOZ X7 230 V AC Screw terminals 774 056
PNOZ X7 240 VAC Screw terminals 774 057
PNOZ X7 24 VAC/DC Screw terminals 774 059
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