Rockwell Automation 2727-G7P20D3Q7 MobileView G750 Guard Machine Terminal - Manual (Page 24)

Publication 2727-UM002D-EN-P
2-6 Safety Precautions and Elements
Connection Example with a Safety Control Relay
The diagram below shows suggested wiring for enabling switches
using a PILZ PST safety control relay to meet safety category 3. Refer
to PILZ PST documentation for additional information.
P IL Z
P S T 1
GND
A1 (+) 2 3 S 1 1
A2 (-)
1 3
1 4 2 4 S 2 3 S 2 4
K A K B
S 1 2
K 1
K 2
+2 4 V D C
F 1
1 A
F 2
4 A(t)
or
6 A(f)
K A K B
X 1 X 2
K A
K B
L 1 L 2 L 3
M
F 3
4 A(t)
or
6 A(f)
GND GND
F 4
3 ,1 5 A
GND
1 2 3 4
1 2 3 4
1 2 3 1 2 3 3 2 1 3 2 1
1 2 3 1 2 3 3 2 1 3 2 1
Z T 1
L
Z T 2
L
Z T 1
R
Z T 2
R
D C /D C
converter
6 7
6 7
S 1 9 :
K 3 :
7 8 1 2 1 7 K 1 : 1 2
K 1 : 7 8 1 2 1 7 1 2
+2 4 V GND E D 1 + E D 1 - E D 2 + E D 2 -
X 1
X 2
+2 4 V GND E D 1 + E D 1 - E D 2 + E D 2 - K 4 :
K 3 :
E valuation electronics
C ircuit 1 C ircuit 2
Z T x
y
....... enabling switch x
y
F eedback
control loop
C ontrol cabinet
MobileView
(2 enabling switches with
3 positions and 2 circuits each)
Connection cable
MobileView
17-pin
coinvers jack
Intermediate cable
MobileView
Terminal block socket K3 on
connection box
Male connector X1 on
connection box
Connection box
Male connector X2 on
connection box
Terminal block socket K4 on
connection box
Enabling of dangerous
movement
Note: All contacts of KA and KB must be forced-guided!