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Safety function blocks
446
02/16 MN05013001Z EN
The circuit diagram in easySafety has only five rungs:
Figure 225:
Example of overspeed monitoring: Electrical circuit
diagram in
easySafety
The coil OM01SA is always active in this example. The func-
tion block is often activated via mode selector switch,
(
section “OS, operating mode selector switch”, page
449). You do not have to wire function block inputs OM01I1
and OM01I2, since these are automatically connected to
device inputs IS01 and IS02. The safe Enable contact
OM01QS switches off device output QS1 – and with it
contactor Q1 – when the maximum speed is exceeded. Re-
enabling is implemented via OM01RE if the motor stands
still (ZM01QS = 1) and the Reset button is actuated (IS09 =
1).
The enable parameter as well as the operating mode are
kept in the default setting and the maximum rotation
frequency is 66 Hz.
-------------------------------
Ä
ZM01SA
-------------------------------
Ä
OM01SA
ZM01QS---IS09------------------
Ä
OM01RE
IS09---------------------------
Ä
ZM01RE
OM01QS-------------------------
Ä
QS01
OM01 NEN MST *
*** ***
>FR
66 Hz
Содержание easySafety
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