User manual

Operating hours counter
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Example: operating hours counter
Operating hours counter for the operating time of a machine.
The time in which a machine (EZ) is energized is to be
measured.
Example: maintenance meters for different machine
areas
Machine areas have to be maintained after different times
have elapsed. Markers N1 and N2 are the on markers of two
different machine areas. These markers control the
associated operating hours counters. Output Q4 switches on
a warning light if the setpoint of an operating hours counter
has been reached. A keyswitch at input I8 resets the
associated operating hours counter after maintenance has
been completed.
J
Operating mode change RUN, STOP, power On, Off,
Delete program, Change program, Load new program. All
these functions do not clear the actual value of the
operating hours counter.
Circuit diagram display Parameter settings of
operating hours counter O1
Circuit diagram display Parameter settings of
operating hours counter O2
---------ÄO1 O1 +
S 000000
N1-------ÄO2
N2-------ÄO3
O2u------ÄQ4
O3k
I8uO2----RO2
hO3----RO3
O2 +
S 000500
EZ500_700.book Page 147 Tuesday, May 3, 2005 5:15 PM