Function blocks
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MN05013005E
247
Hexadecimal value:
01111111111111111111111111111111
Decimal value QV>: 161061273
Operating hours counter
EZD provides 4 independent operating hours counters. The
counter states are retained even when the device is switched
off. As long as the enable coil of the operating hours counter
is active, EZD counts the hours in minute cycles.
Figure 126: EZD circuit diagram with operating hours counter.
Parameter display and parameter set for the operating hours
counter function block:
Contacts
OT01Q1 to OT04Q1
The contact switches when the upper threshold value has
been reached (greater than or equal to).
Coils
• OT01EN to OT04EN: enable coil
• OT01RE to OT04RE: reset coil
J
Values greater than 9999999 are output as 161061273.
Values less than –9 999999 are output as
–161061273. The working range of the function block has
been exceeded.
I 10-----------------------------Ä OT01EN
M 42-----------------------------Ä OT01RE
OT01Q1---------------------------Ä Q 01
OT04
+
>I1
QV>
OT04
Operating hours counter number 04
+
Appears in the parameter display
>I1
Upper threshold value in hours
QV>
Actual value of the operating hours counter