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5. Functional safety engineering
Festo P.BE-CMMP-AS-3A-HW-EN 0708NH
57
Protective door monitoring
Inputs
Outputs
PLC
+24V
+24V
+24V
0V
0V
L
N
Safety door
switch
EN954-1 KAT3
with delay
K1
Safety door open
Request for standstill as per EN 60204-1 (stop category 1)
open
closed
Safety door monitor
Drawn contact
position: Safety
door open or
supply voltage
switched
off
Driver supply of
output stage
0V
[X3] SAFE STANDSTILL / SUPPLY 24V
[X1] I/O communication
Mains input
24V Input
24V-Input
µP
1
2
3
4
5
6
Triggering of relay
n.c.
NC1
NC2
DIN5: Controller enabling
DIN4: Output stage enabling
CMMP-AS-3A...
21
9
1
2
8
9
[X9.] Power supply
Power
contactor
C
o
n
tr
o
lle
r
e
n
a
b
lin
g
O
u
tp
u
t
s
ta
g
e
d
ri
v
e
r
s
u
p
p
ly
O
u
tp
u
t
s
ta
g
e
e
n
a
b
lin
g
F
e
e
d
b
a
c
k
d
ri
v
e
r
s
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p
p
ly
Fig. 5.4 Protective door monitoring as per EN 954-1 Category 3 and Stop Category 1 as per
EN 60204-1
Mode of operation:
The request to bring the motor to a standstill sets the controller enable to low.
The drive slows to a speed of 0 using the defined braking ramp (parameterisable using
the Festo Configuration Tool™). After the ramp time has expired (including the switch-off
Summary of Contents for CMMP-AS-C2-3A
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