Main And Control Circuit Wiring; Connecting The Power Line; Connecting The Motor; Connecting The Protective Earth - Procon V3D Series Instruction Manual

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• Main and Control Circuit Wiring

• Connecting the power line

At connecting the power line comply with following safety measures:
▪ Use only circuit breakers that have been designed specifically for frequency converters.
▪ If an input switch is used, it is allowed to be used not more than once in every 30 minutes.
▪ Use an AC reactor on the input side of the drive:
•
to suppress harmonic current,
•
to improve the power factor on the power supply side,
•
when using an advancing capacitor switch.

• Connecting the motor

At connecting the motor comply with following safety measures:
▪ The output of the frequency converter has to be loaded with a three-phase motor. In case of any other load
consult with the manufacturer!
▪ Never connect a power source to the drives output.
▪ Never short or ground the output terminals.
▪ Do not use phase correction capacitors.
▪ If using a contactor between the drive and motor, it should never be operated when the drive is outputting a
voltage. Operating while there is voltage output can cause large peak currents, thus tripping the over current
detection or damage the drive.
▪ For connecting the output it is recommended to use shielded cable with earthing at both ends.
▪ With an output cable of longer than 30 meters, an output choke coil has to be used. If the cable length
exceeds 200 meters, the output choke coil is not enough, because of the excessive capacitive load. In this
case, a sine filter has to be used. Regarding the output choke coil or the sine filter, please ask the
manufacturer's opinion.

• Connecting the protective earth

At connecting the earthing of the frequency converter comply with following safety measures:
▪ Never share the ground wire with other devices such as welding machines, etc.
▪ Always use a ground wire that complies with electrical equipment technical standards. Keep ground wires as
short as possible. Leakage current is caused by the drive. Therefore, if the distance between the ground
electrode and the ground terminal is too long, potential on the ground terminal of the drive will become
unstable.
▪ When using more than one frequency converter, do not to loop the ground wire.
▪ Use earth cable of same cross-section as that of the phase conductors.

• Connecting the control circuitry

At connecting the control circuitry comply with following safety measures:
▪ Separate control circuit wiring from main circuit wiring and other high-power lines.
▪ The connections of the SR connectors of the control circuitry (digital output) have to be separated from other
connectors of the control circuitry, unless they are used for control purposes.
▪ In order to avoid operation errors use twisted pair or shielded twisted pair cables for connecting the control
circuitry.
▪ Be sure to earth the shielding with the largest possible contact area between shielding and earth connection.
▪ The shieldings have to be earthed at the frequency converter side of the cables.
FREQUENCY CONVERTERS INSTRUCTION MANUAL
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0,55 ÷ 200 kW