Line And Motor Connections - Siemens MICROMASTER 411 Operating Instructions Manual

2 Installation
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
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.
34
o
C copper wire only. For tightening torque see Section 7.3.
MICROMASTER 411 & COMBIMASTER 411
Issue 03/01
Operating Instructions
6SE6400-5CA00-0BP0