AD-11
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AD480
AD960
AD480
Remarks:
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When short/overcurrent condition continues more than 10 sec-
onds, average overcurrent circuit (operated at 110% of rated cur-
rent) operates, and it reduces the current by hang of voltage.
When cause of activation of overcurrent protection is removed,
the output will be automatically recovered.
The overvoltage protection circuit is built-in and comes into effect
at 115 - 140% of the rated voltage. The AC input should be shut
down if overvoltage protection is in operation. The minimum inter-
val of AC recycling for recovery is 5 minutes.
Please avoid applying the over-rated voltage to the output termi-
nal. Power supply may operate incorrectly or fail.In case of oper-
ating a motor etc. , please install an external diode on the output
terminal to protect the unit.
Adjustment of output voltage is possible by using potentiometer.
Output voltage is increased by turning potentiometer clockwise
and is decreased by turning potentiometer counterclockwise.
The ground terminal of remote ON/OFF circuit is connected
with -V output terminal.
”
”
”
For a receiving inspection, such as Hi-Pot test, gradually increase
(decrease) the voltage for the start (shut down). Avoid using Hi-
Pot tester with the timer because it may generate voltage a few
times higher than the applied voltage, at ON/OFF of a timer.
2.4 Overvoltage protection
2.5 Output voltage adjustment range
2.6 Remote ON/OFF
2.7 Isolation
The recovery time varies depending on input voltage.
Between RC and RCG: Output voltage is ON at High” level or
open circuit.
Between RC and RCG: Output voltage is OFF at Low” level or
short circuit.
When RC terminal is Low” level, fan out current is 5mA.
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AD480
AD960
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If the unit is tested on the isolation between input & output and
output & FG, remote ON/OFF must be shorted to output.
(1) Over 45
(Ambient temperature)
(2) Poor ventilation
(3) Excessive output current for over 10 seconds
2.8 Thermal protection
n
Thermal protection is built-in. If this function comes into effect,
shut down the output, eliminate all possible causes of overheat-
ing, and drop the temperature to normal level. Output voltage re-
covers after applying input voltage. To prevent the unit from over-
heating, avoid using the unit in a dusty, poorly ventilated environ-
ment.
3 Series Operation and
Parallel Operation
3.1 Series operation
3.2 Parallel operation/master-slave operation
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Series operation is available by connecting the outputs of two or
more power supplies, as shown below. Output current in series con-
nection should be lower than the lowest rated current in each unit.
Parallel operation is not possible.
(a)
(b)
Redundancy operation is available by wiring as shown below.
l
AD240 AD480
AD
I
2
I
1
I
3
-
-
+
Power
supply
Power
supply
+
Load
Instruction Manual
AC-DC Power Supplies Enclosed type
June 29, 2011
