YASKAWA FSDrive-MV1000 Series Instructions For Use Manual page 76

3.1 Section Safety
Keep the wiring for the main circuit separate from that for the control circuit.
Failure to comply could result in drive malfunction.
Select a power supply with a capacity larger than that of the drive to be connected.
When connecting multiple drives to a single power supply, select a power supply with a capacity larger than the sum of
the power required by all the drives to be connected. Even when the power supply has sufficient capacity, the power
supply voltage may drop when the power is turned on, causing malfunction of connected devices if the power supply
has a large power impedance.
The area where the cables enter the bottom of the drive should be tightly sealed with fire-resistant putty so that
no open space remains. Make sure the entire peripheral areas around the channel base and the pit cover are
tightly sealed with the putty so that no opening remains.
A proper operating environment cannot be maintained if air or dust from the outside makes its way into the drive, and
this can result in damage to the equipment.
Do not solder the ends of wire connections to the drive. Soldered wiring connections can loosen over time.
Improper wiring could result in drive malfunction due to loose terminal connections.
Do not short circuit the drive output terminals or connect the power supply lines to output terminals U, V and
W of the drive.
Incorrect wiring can result in damage to the drive. Carry out wiring that conforms to the wire gauges and tightening
torques described in this manual. Conduct a thorough check of wiring and sequences before turning the power on.
Select a breaker with sufficient capacity for the main circuit power supply side of the drive, taking the inrush
current from the transformer into account.
Inputs and outputs of the drive (main circuit) contain harmonic components that may adversely affect communication
devices, such as AM radios, used in the vicinity. Use high-voltage cables and ground any shielded cables. Separate
cables for control from high-current circuits (main circuit and relay sequence circuits) to avoid induction from
peripheral devices. (It is advisable to separate them by a distance of 30 cm or more.)
Connect input terminals U, V and W of the motor to output terminals U, V and W of the drive, pairing the
terminal codes. The phase orders of the motor terminals and drive terminals should also match.
The motor may run in reverse if the phase orders do not match.
Do not connect the AC power line to the output terminals of the drive.
Failure to comply could result in serious injury or death by fire as a result of drive damage.
Do not share the ground wire with other devices such as welding machines or large-current electrical
equipment.
Improper grounding could result in drive or equipment malfunction.
When using more than one drive, follow the instructions in this manual and ensure that the ground wires do not
form a loop.
Improper grounding could result in drive or equipment malfunction.
When wiring the control circuit, separate it from the main circuit wiring (terminals R, S, T, U, V and W) and
other power lines.
Improper grounding could result in drive malfunction.
Insulate the shielded wires of the drive, e.g. with tape, to prevent their contact with other signal lines or devices.
Failure to comply could result in drive or equipment malfunction due to short circuit.
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NOTICE
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions