Siemens MICROMASTER 411 - Manual (Page 34)

2 Installation Issue 03/01
MICROMASTER 411 & COMBIMASTER 411 Operating Instructions
34 6SE6400-5CA00-0BP0
2.5.2 Line and Motor Connections
WARNING
This equipment must be grounded.
♦ Isolate the electrical power supply before making or changing connections to
the unit.
♦ MICROMASTERS must not be connected to a higher voltage supply.
♦ Ensure that the motor is configured for the correct supply voltage 380 V to
480 V three-phase supply.
♦ When synchronous motors are connected or when coupling several motors in
parallel, the inverter must be operated with voltage/frequency control
characteristic (P1300 = 0, 2 or 3).
CAUTION
After connecting the power and motor cables to the proper terminals, make sure
that the cover has been replaced properly before supplying power to the unit!
NOTICE
♦ Ensure that the appropriate circuit-breakers/fuses with the specified current
rating are connected between the power supply and inverter (see Section
7.5).
♦ Use Class 1 75 o C copper wire only. For tightening torque see Section 7.3.
♦ To tighten up the power terminal screws use either a 4-5 mm flat bladed
screwdriver or a 2pt Pozidrive Head screwdriver.
Access to the power and motor terminals
The procedure for accessing the power and motor terminals on the
COMBIMASTER 411 & MICROMASTER 411 Inverter is illustrated in Figure 2-10.