2.SPECIFICATIONS B-65282EN/05
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(2) The control circuit power to the power supply module (power
input to CX1A) must be turned on before the power to the CNC
is turned on or within 500 ms after the power to the CNC is
turned on.
(3) It is recommended that a capacitor unit for power-factor
improvement not be installed. This is because the capacitor unit
for power-factor improvement may adversely affect power
regeneration.
(4) The rated output of the motor is guaranteed for the rated input
voltage. If the input voltage changes, the rated output may not
appear even when the input voltage change is within the
allowable range.
(5) Power supply voltage for the main circuit
• The power specification of the main circuit for the αHVi
series servo amplifier is as follows:
<1> Star connection
<2> Neutral grounding on the power supply side
<3> A PE is provided on the power line. (The PE of the
amplifier and motor is connected to the PE of the
power line.)
<4> The inter-phase voltage of the power supply is 400
VAC to 480 VAC (-15%, +10%).
• If the power supply does not satisfy the conditions above,
the power supply needs to be converted to a power supply
for neutral grounding by using a star connection and an
isolating-transformer.
• The αHVi series servo amplifier is designed in compliance
with the safety standard EN50178 to implement insulation
design of the pattern and components of the printed circuit
board by ensuring that the phase voltage of the power
supply and the voltage between grounds connected to the
neutral point of the star connection are AC 300 Vrms or
below.
Accordingly, if the power supply does not satisfy the
conditions above, the pattern and components of the printed
circuit board are poorly insulated. This can cause very
dangerous states including a failure in servo amplifier
operation and the occurrence of a high voltage at exposed
areas.