ABB ACS880-01 Series Manuale - Pagina 12

Sfoglia online o scarica il pdf Manuale per Controllore ABB ACS880-01 Series. ABB ACS880-01 Series 16. Industrial drives
Anche per ABB ACS880-01 Series: Manuale di installazione (20 pagine), Manuale di installazione rapida (14 pagine), Manuale di installazione e avviamento rapido (17 pagine), Manuale d'uso (18 pagine)

12 Reforming the capacitors

3. Make this reforming circuit and connect it to the DC terminals of the converter module.

An external resistor is not needed if the DC power supply has an adjustable current

limiter.

Disconnect

4. Switch on the reforming circuit for the time defined in section

Note: Limit the reforming current to max. 500 mA. If the DC power supply does not

have an adjustable current limiter, increase the voltage gradually from 0 to the full

scale value. Regulated DC power with active current limiting:

•

Output current: 0.5...1 A DC, max. 500 mA during reforming

•

Output voltage: adjustable 0...1000 V DC. An appropriate voltage during

reforming is 1.35...1.45·U

WARNING! The capacitors can get damaged if you use excessive DC voltage

during the reforming.

5. Switch off the reforming circuit.

6. Wait for 5 minutes (10 minutes for wind turbine converters) to let the converter DC

capacitors discharge.

7. Measure that the voltage of the DC terminals of the converter is close to 0 V.

8. Disconnect the reforming circuit from the converter.

DC power supply

DC Power supply

0.5 A ... 1 A 1000 VDC

SUPPLY

UDC-

UNIT

. U

denotes the nominal AC voltage of the converter.

0.5 A...1 A 1000 V DC

FREQUENCY

DRIVE MODULE

CONVERTER

= 100 Ohm / 500 W

INVERTER

UDC+

UNIT

Reforming time

on page