AD-12
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Even a slight difference in output voltage can affect the balance
between the values of I and I .
Please make sure that the value of I does not exceed the rated
current of a power supply.
I
the rated current value
Output voltage in parallel operation is adjustable by using the po-
tentiometer of the ”master” unit. Select one power supply to be
the master, and turn the potentiometer of the other, ”slave” power
supplies, clockwise to the end. Then use the potentiometer of the
mater to adjust output voltage.
In parallel operation, output voltage increases like stairs due to a
delay of the rise time of output voltage at turn on.
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Parallel operation is available by connecting below.
As variance of output current drew from each power supply is
maximum 10%, the total output current must not exceed the
value determined by the following equation.
(Output current in parallel operation)
= (the rated current per unit)
(number of unit)
0.9
When the number of units in parallel operation increases, input
current increases at the same time. Adequate wiring design for in-
put circuitry is required, such as circuit pattern, wiring and current
capacity for equipment.
In parallel operation, the maximum operative number of units is 5.
When remote sensing is used in parallel operation, the sensing
wire must be connected ONLY to the master.
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AD960
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In parallel operation, please connect diode to the +side of the out-
put circuit. If diode is connected to the -side, it will damage the
unit or/and the balancing function will not work.
YES
NO
4 Assembling and
Installation Method
4.1 Installation method
4.2 Derating
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When two or more power supplies are used side by side, position
them with proper intervals to allow enough air ventilation. Ambient
temperature around each power supply should not exceed the
temperature range shown in derating curve.
The operative ambient temperature is different by with/without
case cover or mounting position. Please refer drawings as below.
When unit mounted except below drawings, it is required to con-
sider ventilated environment by forced air cooling or tempera-
ture/load derating. For details, please consult our sales or engi-
neering departments.
AD
Instruction Manual
AC-DC Power Supplies Enclosed type
June 29, 2011
