Chapter 4 WiringMS300 (High Speed Model)
4-2
After removing the front cover, please check if the power and control terminals are clearly visible.
Please read following precautions to avoid wiring mistakes.
DANGER
It is crucial to cut off the AC motor drive power before doing any wiring. A charge
may still remain in the DC bus capacitors with hazardous voltages even after the
power has been turned off a short time. Therefore it is suggested to measure the
remaining voltage with a DC voltmeter on +1/DC+ and DC- before doing any
wiring. For your personnel safety, please do not start wiring before the voltage
drops to a safe level < 25 VDC. Wiring the installation with a remaining voltage
condition may cause injuries, sparks and short circuits.
Only qualified personnel familiar with AC motor drives is allowed to perform
installation, wiring and commissioning. Make sure the power is turned off before
wiring to prevent electric shocks.
The terminals R/L1, S/L2, T/L3 are for mains power input. If mains power is
wrongly connected to other terminals, it may result in damage to the equipment.
The voltage and current should lie within the range as indicated on the nameplate
(see Chapter 1-1).
All units must be grounded directly to a common ground terminal to prevent
electrical shocks or damage by lightning.
Please make sure to tighten the screw of the main circuit terminals to prevent
sparks due to the loosening of vibrations.
When wiring, please choose the wires with specification that complies with local
regulations for your personal safety.
Check following items after finishing the wiring:
1. Are all connections correct?
2. Any loose wires?
3. Any short-circuits between the terminals or to ground?
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