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Safety function blocks
434
02/16 MN05013001Z EN
OM, Maximum speed
monitoring
The function block is used for the safety-related speed moni-
toring of a motor or a shaft. If the set maximum speed is
exceeded, the function block removes the enable for the
drive and outputs an error signal at the same time.
The function block always operates with 2 rotary encoders.
easySafety allows the monitoring of 2 maximum speeds on
the same shaft or motor for different operating modes.
Function block
Figure 220:
Overspeed monitoring function block
a
Coil OM..SA: safety activation of the function block.
Use only in the safety circuit diagram.
b
Coil OM..RE: Reset of the function block to Manual Start (MST)
and Controlled Start (CST) modes and starting of normal oper-
ation.
Use only in the safety circuit diagram.
c
Coil OM..EN: Selective activation or deactivation of the function
block function.
Use either in the safety or standard circuit diagram.
d
Parameter OM..FR: Maximum permissible rotation frequency.
Can be used as an adjustable constant.
e
Contact OM..QS: Closes if the rotation frequency is less than
the permissible frequency and enables the hazardous move-
SA
RE
EN
>FR
QS
ER
DG:
QV:
OM...
Overspeed Monitor
a
b
c
d
e
f
g
h
DW
Hz
Содержание easySafety
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