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12
AC (120/220V) 16A Power Supply
I
O
Troubleshooting
I
P/S
O
Active
12627 I
Power Ratings
16
12
Backplane
Load Current
8
(Amps)
4
0
20
60
100
Apparent Power (VA)
Publication 1771 IN056B EN-P - December 2001
Connect
high side of the line power
low side of the line power
central ground bus (earth ground)
À
A 3A 250V normal blow fuse protects the input line L1 from drawing more than 3 amperes.
The power supply has a green P/S ACTIVE LED that provides status
indication during power supply operation.
Normal operation
on
Important:
If a shutdown condition occurs, wait 15 seconds before
attempting to apply power.
For additional assistance, contact your local Allen-Bradley
representative.
Use these graphs to determine your:
cooling requirements
power cost
transformer size (unless the transformer manufacturer has a
recommended multiplier for sizing a transformer for an ac-to-dc
power supply)
16
12
8
4
0
140
180
0
30
Real Power (Watts)
ac power connectors
À
L1
L2/N
GND
14 AWG
If indicator is
Then
off
it may be due to:
input voltage not within specified range
blown fuse
overcurrent
16
12
8
4
0
60
90
120
0
Line 1
ac power
(customer
Line 2 or
supplied)
neutral
Ground
Bus
Grounding electrode
conductor
12626 I
75
150
225
300
Transformer Sizing (VA) =
Real Power (Watts) x 2.5
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