ABB Service Note ACS 1000 Auxiliary Power Upgrade Guide
Summary
Maximize your plant's uptime with the auxiliary power upgrade for ABB ACS 1000 medium voltage drives. This retrofit solution significantly boosts drive reliability by replacing limited-life backup batteries with a fail-safe power source derived from an external UPS connection. Ideal for industrial facilities requiring minimal downtime, this guidance outlines how to achieve superior "Power-Loss-Ride-Through" capabilities and ensure continuous operation, regardless of cooling type or network conditions.
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Service note ACS 1000 auxiliary power upgrade
ABB offers an auxiliary power upgrade for its ACS 1000 medium voltage drive to further increase the drive‘s reliability and availability.
ACS 1000 variable speed drives; water cooled and air cooled
Auxiliary power upgrade Benefits Reliability and availability are key for our customers to minimize Longer Auxiliary-Power-Loss-Ride-Through capabilities plant downtime and maximize production. Elimination of internal back-up batteries
Improved reliability and availability
The probability of malfunction of electrical equipment does not Easy troubleshooting as the interface with the control system only depend on the reliability of the equipment itself, but also is via digital inputs only on external factors, such as network conditions. In case of an Predefined software and hardware packages reduce the auxiliary power loss, the ACS 1000 can cope with a power loss as downtime for the upgrade on-site the drive is equipped with back-up batteries. These batteries limit the “Power-Loss-Ride-Through” to one second. However, batteries have a limited life expectancy.
To overcome these constraints, a new auxiliary power concept without back-up batteries has been designed and is now available as a retrofit option.
In addition to the standard three phase auxiliary supply which is used also for cooling, the new power supply concept uses a safe line auxiliary source from the customer’s UPS to supply the drive power supplies. This upgrade further improves the reliability and availability of the ACS 1000.
Page Summary Contents For ABB Service Note ACS 1000 Auxiliary Power Upgrade Guide
Manual Details
| Brand | ACS |
|---|---|
| Pages | 2 |
| File Size | 216.23 KB |
| Published | May 12, 2026 |
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Frequently Asked Questions
How does the new auxiliary power concept improve reliability compared to internal batteries?
It eliminates internal back-up batteries and uses a safe line auxiliary source from your UPS, which boosts overall availability.
What external power sources are needed for this upgrade?
The system requires an external 1 phase UPS supply for control and an external 3 phase supply for cooling.
What specialized parts do I need to order for different units (air/water cooled)?
Use code 3BHB017534R0001 for air-cooled ACS 1000s or 3BHB017534R0002 for water-cooled models.
How long should I expect the on-site installation process to take?
The upgrade requires approximately one working day. It can be ordered from local ABB service organizations.