ABB ACS550-U2 Manuals

Key facts

Brand: ABB
Model: ACS550-U2
Industry: Industrial
Documents: 3
Languages: EN
Last added: 2012-08-07

Start here

ABB ACS550-02 Drives (132 355 kW) ACS550-U2 Drives (250 550 hp) User Manual

User Manual 311 pages · 9.2 MB · EN

This manual covers the ACS550‑02 and ACS550‑U2 adjustable‑speed AC drives, detailing safety instructions, electrical installation planning, mechanical mounting, wiring, and commissioning procedures. It also includes extensive information on control panels, application macros, parameter settings, embedded fieldbus options, and diagnostic features.

Safety warnings emphasize the presence of dangerous voltage, proper handling of EMC filters and varistor networks, and safe lifting of the heavy drive units. Installation guidance addresses frame size selection, cable routing, and grounding. Operational sections describe start‑up, I/O control, ID‑Run, and maintenance, while the technical data section lists ratings, dimensions, and compliance information.

Read online

ABB ACS550-U2 specifications

Power Rating	150...550 HP
Voltage Type	Low Voltage AC
Service Type	Field repairable

Source: ABB Drive IT Low Voltage AC Drives Installation Supplement ACS550-U2 Drives (150 550 HP) service manual

All ABB ACS550-U2 documents by type

User Manual 2

Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.

Installation Guide 1

Mounting, wiring and first power-up. Read it before the hardware goes in.

ABB Drive IT Low Voltage AC Drives Installation Supplement ACS550-U2 Drives (150 550 HP) service manual 20 p

Questions answered in these manuals

Who is qualified to install the ACS550 drive?

The ACS550 adjustable speed AC drive should ONLY be installed by a qualified electrician.

From: ABB Drive IT Low Voltage AC Drives Installation Supplement ACS550-U2 Drives (150 550 HP) service manual

How long must you wait before removing covers after disconnecting power?

You must wait at least 5 minutes to let the intermediate circuit capacitors discharge.

From: ABB Drive IT Low Voltage AC Drives Installation Supplement ACS550-U2 Drives (150 550 HP) service manual

What are the main safety warnings for the ACS550 drives?

The manual warns of dangerous voltage on power terminals, the need for qualified electricians, the presence of voltage even when the motor is stopped, the requirement to disconnect EMC filters on certain power systems, and the heavy weight of the drive requiring lift lugs only.

From: ABB ACS550-02 Drives (132 355 kW) ACS550-U2 Drives (250 550 hp) User Manual

How should the EMC filter be disconnected when installing the drive on an IT system?

Disconnect the EMC filter (frame size R7) and the varistor network (frame sizes R7 and R8) before connecting the drive to an IT (ungrounded) or corner‑grounded TN system.