User Manual Owner's manual

Installing Your
Programmable Controller
Chapter 4
4-7
Figure 4.1
Grounded ac PowerDistribution System with Master Control Relay
L1
L2
L3
1FU
2FU
3FU
H
L1
L2
L3
H
+–
102300-I
LN1
1
4
H
3
H
2
X
1
X
2
1
2
3
4
1
2
3
4
To minimize EMI generation, you should connect a suppression network: for 120V ac, use AllenBradley
cat. no. 700N24; for 220/240V ac, use cat. no. 599KA04.
To minimize EMI generation, you should connect a suppression network: for 120V ac, use AllenBradley
cat. no. 700N24; for 220/240V ac, use cat. no. 599KA04.
For a power supply with a groundable chassis, this represents connection to the chassis only. For a power
supply without a groundable chassis, this represents connection to both the chassis and the GND terminal.
In many applications, a second transformer provides power to the input circuits and power supplies for
isolation from the output circuits.
incoming ac
disc
to motor starters
enclosure wall
grounding electrode
conductor to groun
d
electrode system
grounding
electrode
conductors
connect when applicable
user dc
supply
to dc I/O devices
output device
output module
wiring arm
input module
wiring arm
input device
CRM
CRM
backpanel
ground bus
stepdown
transformer
use any number of
Estop switches in series
FUSE
CRM
CRM
GND
I/O chassis
power supply
start