Instruction manual

2.1 Input voltage range
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The range is from AC85 - 264V or DC(Refer to SPECIFICA-
TIONS).
Only AC input is available to comply with agency approval.
¡
A low input potential can correspond more than AC85V and
DC120V by the option (Refer to 7 Option).
The decrease of load factor is needed, and consult us detailed.
¡
If the wrong input is applied, the unit will not operate properly and /
or may be damaged. Avoid the followings to cause failure of the
unit to apply square wave form input voltage, which is commonly
used in UPS and inverters.
2.2 Inrush current limiting
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Inrush current limiting is built-in.
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lf a switch on the input side is installed, it has to be the one han-
dling the input inrush current.
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PBA50F, 75F, 100F, 150F
¡
The thermistor is used for protection from inrush current. When
power is turned ON / OFF repeatedly within a short period of
time, it is necessary to have enough time for power supply to cool
down.
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PBA300F, 600F, 1000F, 1500F
¡
The thyristor technique is used for protection from inrush current.
If power is turned ON / OFF repeatedly within a short period of
time, that may cause failure. It is necessary to have enough time
between power ON and OFF.
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When the switch of the input is turned on, the primary inrush cur-
rent and secondary inrush current are generated.
2.3 Overcurrent protection
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Overcurrent protection is built-in and activated at 105% of the
rated current or 101% of the peak current.
Overcurrent protection protects the unit from short circuit and
overcurrent condition. The unit automatically recovers when the
fault condition is removed.
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lf the output voltage drops more than 50% of the rated voltage in
an overcurrent protection mode, the average current will also be
reduced by the intermittent operation.
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PBA1000F, 1500F
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The output voltage is shut down when the overcurrent protection
circuit operates continuously for 5 sec in PBA1000F, PBA1500F.
The minimum interval of AC recycling for recovery is 3 minutes.
The recovery time varies depending on input voltage and load
condition.
2 Function
2.4 Overvoltage protection
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PBA50F, 75F, 100F, 150F, 300F
¡
The overvoltage protection circuit is built-in. The AC input should
be shut down if overvoltage protection is in operation. The mini-
mum interval of AC recycling for recovery is 3 minutes.
*
The recovery time varies depending on input voltage.
¿
PBA600F, 1000F, 1500F
¡
Overvoltage protection circuit to follow to output voltage is built-in.
The AC input should be shut down if overvoltage protection is acti-
vated. The minimum interval of AC recycling for recovery is more
than 3 minutes. The recovery time varies depending on input volt-
age.
*
Overvoltage protection circuit to follow to output voltage is not
built into PBA300F. It corresponds by the option. Please consult
us detailed.
Remarks :
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.
2.5 Thermal protection
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PBA300F, 600F, 1000F, 1500F
¡
Thermal protection circuit is built-in and shut down under following
condition.
1
When the current and the temperature which exceed from the
derating curve.
2
The case FAN stops or air ow is interrupted and the amount of
the wind decreases.
After cut off input voltage and cooling down inside of power sup-
ply, turns on the input of the power supply again.
2.6 Output voltage adjustment
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Output voltage is increased by turning potentiometer clockwise
and is decreased by turning potentiometer counterclockwise.
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PBA50F, 75F, 100F, 150F
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A built-in potentiometer is lost, and there is an option : -V to be
able to do a changeable output voltage in the potentiometer put
on the outside (Refer to 7 Option).
Unit type
Instruction Manual
A-22
PBA
Unit type
Instruction Manual
A-23
PBA