L1
120V ac
L2
EQUIP. GND
SPARE
220/240V ac
120V ac
SPARE
120V
Operation
11939
L1
L2
EQUIP. GND
SPARE
220/240V ac
120V ac
SPARE
220/240V
Operation
metal jumper
metal jumper
120V ac
ac line
120 V ac 1A SB
220/240 V ac 0.5A SB
Installation Data
Auxiliary Power Supply
Cat. No. 1771P2
4
Before connecting ac power to the power supply, you must:
check the input voltage
check the fuse protection
Check the Input Voltage
The power supply is factory-shipped for 120V ac operation. You can use:
120V ac
or
220/240V ac
Two metal jumpers are installed on the front terminal strip at the positions
indicating 120V ac.
ATTENTION:
Be sure the power supply is correctly jumpered
for
either
120V ac
or
220/240V ac. Incorrect jumpering on the
terminal strip may cause improper operation or damage to the
power supply.
If you are using the power supply for 220/240V ac operation, remove
both
metal jumpers on the terminal strip from their original 120V positions.
Install
one
of these jumpers at the terminal labeled 220/240V ac.
Check the Fuse Protection
The power supply is protected from overcurrent at its inputs by a
slow-blow fuse. The power supply comes with one 1A slow-blow fuse
installed for 120V operation. If you are using the power supply for
220/240V operation, remove the 1A fuse and replace it with the 0.5A
slow-blow fuse that is provided. Replacement fuses are shown below:
Input Voltage
Fuse
Manufacturer's No.
120V ac
3AG
1A
Bussman:
MDL 1A
Littelfuse:
313001
220/240V ac
3AG
0.5A
Bussman:
MDL 0.5A
Littelfuse:
313.500
A replacement fuse kit (cat. no. 1771-FP) containing both 1A and 0.5A
fuses is available. Contact your local Allen-Bradley representative for
further information.
Connect AC Power