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Safety function blocks
360
02/16 MN05013001Z EN
EN, enable switch
Enable switches bridge the function of guards such as that
of a safety gate. They therefore enable hazardous move-
ments even when the safety gate is open. This may be neces-
sary, for example, for setting up a machine.
The function block operates with 2-channel enable switches
(2 make contacts).
easySafety allows the monitoring of up to 7 enable switches.
Function block
Figure 178:
Enable switch function block
a
Coils EN..I1 to EN..I2: monitoring of the enable switch.
Use only in the safety circuit diagram.
b
Coil EN..SA: safety activation of the function block.
Use only in the safety circuit diagram (mandatory).
c
Coil EN..EN: Selective activation or deactivation of the function
block function (optional).
Use either in the safety or standard circuit diagram.
h
When used properly, the enable does not trigger the
hazardous movement but simply initiates the enable
signal for triggering the movement.
I1
I2
SA
EN
>ED
QS
ER
DG:
QV:
EN...
ENable switch
a
b
c
d
e
f
g
h
DW
Содержание easySafety
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