Siemens MICROMASTER 420 0.25 kW 1-phase frequency inverter, 230 Vac to , 6SE6420-2AB12-5AA1 6SE6420-2AB12-5AA1 Hoja De Datos

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MICROMASTER 420 Operating Instructions

6SE6400-5AA00-0BP0

♦  Work on the device/system by unqualified personnel or failure to comply with

warnings can result in severe personal injury or serious damage to material. Only
suitably qualified personnel trained in the setup, installation, commissioning and
operation of the product should carry out work on the device/system.

♦  Only permanently-wired input power connections are allowed. This equipment must

be grounded (IEC 536 Class 1, NEC and other applicable standards).

♦  If a Residual Current-operated protective Device (RCD) is to be used, it must be an

RCD type B.

♦  Machines with a three-phase power supply, fitted with EMC filters, must not be

connected to a supply via an ELCB (Earth Leakage Circuit-Breaker EN50178
Section 5.2.11.1).

♦  The following terminals can carry dangerous voltages even if the inverter is

inoperative:
- the power supply terminals L/L1, N/L2, L3.
- the motor terminals U, V, W, DC+, DC-

♦ Always 

wait 

5 minutes to allow the unit to discharge after switching off before

carrying out any installation work.

The connection of power, motor and control cables to the inverter must be carried out
as shown in Figure 2-4 on page 25, to prevent inductive and capacitive interference
from affecting the correct functioning of the inverter.

Following a prolonged period of storage, you must reform the capacitors in the inverter.
The requirements are listed below.

1 year or less

No reforming required

No preparation

1 to 2 years

Apply power to the inverter for one hour before
issuing the run command

1 hour

2 to 3 years

 Use a variable AC supply

 Apply 25% of input voltage for 30 minutes

 Increase volts to 50% for a further 30 minutes

 Increase volts to 75% for a further 30 minutes

 Increase volts to 100% for a further 30 minutes

2 hours

3 years and over

 Use a variable AC supply

 Apply 25% of input voltage for 2 hours

 Increase volts to 50% for a further 2 hours

 Increase volts to 75% for a further 2 hours

 Increase volts to 100% for a further 2 hours

8  hours