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7. 2 Frame Ground (FG)
DANGER
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The case of drive is electrically isolated with interior circuit by 0.1 uF capacitor for Earth. So you
can use the case for Earth. Be sure to connect the earth to enhance the drive noise immunity. When
you connect the Earth with wire, Use the thick wire and connect shortly
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If the panel is conductor that is connected at the earth of the main power, additional earth for drives
is not required.
7. 3 power supply for drives
CAUTION
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Make the capacity of the power supply for drive sufficiently large. If possible, the output current of
power supply is at least one half larger than the run current set value of drive.
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If the capacity of power is not sufficient for the drive and motor to run, drive may break down
.
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For example, current motor phase current is 2A and RUN CURRENT of drive is set as 2A, then the
output current of power supply is at least 3A (if possible, choose 4A).
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Power input voltage is 12-36Volt. The torque at high speed increases as the magnitude of input
voltage. Be sure that the peak input voltage is less than 36 volt. Also, as the magnitude of ripple
voltage of input power determines the life of drive, so that make the voltage ripple of input power as
small as possible.
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Choose the thick wire for power connection lines. Moreover important in wiring is that the line
should be twisted.
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In case when the 2 or more drives are connected at one power supply, be sure to connect power
for drive direct from power supply separately and for easy cooling make the room at 3cm between the
drives and power. (Serial connections are worst power connection.)
7.4 Cooling
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The enclosure of CSMD drive is a heatsink, which allows for heat dissipation produced by the
internal components. During operation the heatsink will become warm to the touch and should not be
a concern to the user. An internal temperature sensor will shut down the drive if the internal air
reaches 70°c internally. If this Over-Temperature fault condition exists the alarm LED will be