Incoming Power Connection; Cable Selection; Motor Connection; Motor Terminal Box Connections - SODECA VSD1/A-RFM-0.5 Manual De Instalación Y Operación

4.3. Incoming Power Connection

4.3.1. Cable Selection

 For 1 phase supply, the mains power cables should be connected to L1/L, L2/N.
 For 3 phase supplies, the mains power cables should be connected to L1, L2, and L3. Phase sequence is not important.

For compliance with CE and C Tick EMC requirements, refer to section 4.10 EMC Compliant Installation on page 14.

A fixed installation is required according to IEC61800-5-1 with a suitable disconnecting device installed between the VSD and the AC Power
Source. The disconnecting device must conform to the local safety code / regulations (e.g. within Europe, EN60204-1, Safety of machinery).

The cables should be dimensioned according to any local codes or regulations. Maximum dimensions are given in section 9.2.
4.3.2. Fuse / Circuit Breaker Selection
 Suitable fuses to provide wiring protection of the input power cable should be installed in the incoming supply line, according to the data in
section 9.2 Rating Tables. The fuses must comply with any local codes or regulations in place. In general, type gG (IEC 60269) or UL type J
fuses are suitable; however in some cases type aR fuses may be required. The operating time of the fuses must be below 0.5 seconds.

Where allowed by local regulations, suitably dimensioned type B MCB circuit breakers of equivalent rating may be utilised in place of fuses,
providing that the clearing capacity is sufficient for the installation.

The maximum permissible short circuit current at the VSD Power terminals as defined in IEC60439-1 is 100kA.
4.3.3. Optional Input Choke
 An optional Input Choke is recommended to be installed in the supply line for drives where any of the following conditions occur:-
o The incoming supply impedance is low or the fault level / short circuit current is high
o The supply is prone to dips or brown outs
o An imbalance exists on the supply (3 phase drives)
o The power supply to the drive is via a busbar and brush gear system (typically overhead Cranes).

In all other installations, an input choke is recommended to ensure protection of the drive against power supply faults. Part numbers are
shown in the table.

4.4. Motor Connection


The drive inherently produces fast switching of the output voltage (PWM) to the motor compared to the mains supply, for motors which
have been wound for operation with a variable speed drive then there is no preventative measures required, however if the quality of
insulation is unknown then the motor manufacturer should be consulted and preventative measures may be required.

The motor should be connected to the VSD U, V, and W terminals using a suitable 3 or 4 core cable. Where a 3 core cable is utilised, with
the shield operating as an earth conductor, the shield must have a cross sectional area at least equal to the phase conductors when they are
made from the same material. Where a 4 core cable is utilised, the earth conductor must be of at least equal cross sectional area and
manufactured from the same material as the phase conductors.
 The motor earth must be connected to one of the VSD earth terminals.

Maximum permitted motor cable length for all models: 100 metres shielded, 150 metres unshielded.

4.5. Motor Terminal Box Connections

Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor. This
operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives the higher
of the two voltage ratings.
Incoming Supply Voltage
Supply
230 V
1 Phase
400 V
3 Phases
Motor Nameplate Voltages
230 230 / 400
400 400 / 690
400 230 / 400
Frame Size
1 Single Phase Input Inductance 16 A
2 Single Phase Input Inductance 25 A
3
1 Three Phase Input Inductance 6 A
2 Three Phase Input Inductance 10 A
3 Three Phase Input Inductance 36 A
4 Three Phase Input Inductance 50 A
VSD*/A
Delta
Star
11
AC Input Inductor
N/A
Connection