MMC-13
2.4 Overvoltage protection
2.5 Output voltage adjustment range
2.6 Isolation
2.7 Minimum output current of +5V
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In V1, overvoltage protection circuit is built-in to be operated at
115 - 140% of the rated voltage. When this function operates, in-
put should be shut off, and then wait for 2 minutes( ). Output volt-
age will be recovered after applying input voltage.
The recovery time depends on input voltage.
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 for V1 is possible by using potenti-
ometer.
Output voltage is increased by turning potentiometer clockwise
and is decreased by turning potentiometer counterclockwise.
When potentiometer is over-turned clockwise, overvoltage protec-
tion function activates. To set up output voltage, first turn potenti-
ometer counterclockwise to the end, then turn back clockwise
gradually until reaching the level of required voltage.
For a receiving inspection, such as Hi-Pot test, gradually in-
crease(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.
If the unit is tested on the isolation between input & output and
output & FG, output terminals must be shorted.
By V1(+5V) load condition, the load factor of V2 and V3 are changed
as below.
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MMC50A MMC75B MMC100B
MMC50A MMC75B MMC100B
Remarks:
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MMC50A
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MMC75B
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MMC100B
MMC
Instruction Manual
AC-DC Power Supplies Enclosed type
June 29, 2011
