ABB KRAFT-DC2 Replacement/Upgrade for KRAFT Series

Product Overview

ABB KRAFT-DC2 Replacement/Upgrade for KRAFT Series: Smooth Transition from Legacy DC Drive Systems

The ABB KRAFT-DC2 DC Drive Control Board is a critical component within ABB’s KRAFT Series DC drive platform, widely deployed across heavy industrial applications including steel rolling mills, paper machines, extruders, hoists, and large-scale conveyor systems. As ABB progressively phases out legacy KRAFT Series hardware, many plant engineers and procurement teams are now facing the challenge of sourcing a reliable KRAFT-DC2 replacement or planning a structured upgrade path to maintain production continuity.

At TOPNLMS, we stock tested and verified ABB KRAFT-DC2 boards ready for immediate dispatch. Whether you are executing an emergency breakdown replacement or planning a scheduled retrofit, our team provides full technical support to ensure your transition is as seamless as possible — minimizing downtime, protecting your existing wiring infrastructure, and preserving compatibility with your current control architecture.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful KRAFT-DC2 board replacement rarely happens in isolation. In most plant environments, the control board interfaces with a broader ecosystem of drive and automation components. During the retrofit or upgrade process, engineers commonly evaluate or simultaneously replace the following related hardware:

The ABB KRAFT Series thyristor stack and associated KRAFT drive power section are the most frequent co-replacement items — if the control board has failed due to an upstream power fault, the thyristor bridge should be inspected before commissioning the new KRAFT-DC2. Similarly, the ABB KRAFT Series field excitation board (often designated KRAFT-EXC or equivalent) governs motor field current and should be verified for correct output before the armature loop is re-energised.

For sites integrating the KRAFT drive into a wider DCS or PLC architecture, the ABB NDIO-01 or NDIO-02 I/O extension modules are commonly used to bridge analogue speed references and digital run/stop commands between the drive and the plant control system. If your site uses Profibus DP for drive communication, the ABB NPBA-12 Profibus adapter is the standard fieldbus interface module for KRAFT-era ABB drives and should be confirmed compatible with your network master.

On the motor side, sites upgrading from older KRAFT installations sometimes take the opportunity to replace ageing DC motor tachogenerator feedback units or transition to encoder-based speed feedback, which requires a corresponding encoder interface card within the drive. The KRAFT-DC2 supports standard analogue tacho inputs, so existing feedback wiring is typically retained without modification.

For cabinet-level integration, the ABB KRAFT Series control panel (CDP312R or equivalent) provides local parameter access and drive diagnostics. If the panel is absent or damaged, a replacement CDP panel or a laptop running ABB DriveWindow software via the ABB OPFA-01 or OPFA-02 panel bus adapter can be used for commissioning and parameter upload/download.

Sites running multi-drive configurations — for example, coordinated DC drives on a paper machine or rolling mill — should also verify the status of the KRAFT Series master/follower communication link and any associated ABB NINT-41 or NINT-51 inverter control boards in adjacent drive cabinets, as a single board failure can cascade across a synchronised drive train if not isolated correctly.

Retrofit Guidance FAQ

Q: Can I replace the KRAFT-DC2 without rewiring the motor or field circuits?
A: In the vast majority of standard KRAFT Series cabinet installations, the KRAFT-DC2 is a direct board-level swap. Existing armature, field, and feedback wiring connects to the same terminal layout. Always verify terminal designations against the original KRAFT drive wiring diagram before energising.

Q: Do I need to re-enter all drive parameters after replacing the board?
A: Yes. The KRAFT-DC2 does not retain parameters after a board swap. We strongly recommend backing up all parameters via the CDP panel or DriveWindow software before removing the faulty board. If the original board is non-functional, TOPNLMS can provide a standard parameter template for common KRAFT-DC2 applications upon request.

Q: Is the KRAFT-DC2 compatible with Profibus DP or Modbus RTU?
A: The KRAFT-DC2 control board itself uses hardwired analogue and digital I/O as its primary interface. Fieldbus connectivity (Profibus DP, Modbus RTU, DeviceNet) is achieved via optional fieldbus adapter modules mounted in the drive’s option slot. Confirm your existing adapter module type before ordering.

Q: What physical space is required for installation?
A: The KRAFT-DC2 is designed for the standard KRAFT Series drive chassis. No additional cabinet space is required for a like-for-like board replacement. If you are upgrading to a newer ABB drive platform as part of a broader modernisation project, cabinet resizing may be necessary — contact our technical team for a layout assessment.

Q: How long does commissioning typically take after a KRAFT-DC2 board swap?
A: For an experienced drive engineer performing a direct replacement with a pre-loaded parameter set, commissioning typically takes 2–4 hours including functional testing. First-time installations without a parameter backup may require additional tuning time for speed loop and current loop optimisation.

Warranty Assurance

Every ABB KRAFT-DC2 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each board undergoes a multi-point functional inspection including visual examination, power-on self-test, and where applicable, load simulation to verify thyristor firing signal integrity and regulation circuit performance.

In the event of a warranty claim, TOPNLMS provides a straightforward replacement or repair process: contact our after-sales team at [email protected] with your order reference and a description of the fault. Our technical team will assess the claim within 2 business days and arrange return logistics or an advance replacement shipment depending on your production urgency.

We ship globally from Xiamen, China, with standard lead times of 3–7 business days for stocked items. Express DHL/FedEx options are available for emergency breakdown situations. All units are packed in anti-static ESD-safe packaging with foam cushioning to prevent transit damage.

For B2B procurement teams requiring documentation, we can provide a commercial invoice, packing list, certificate of conformity, and test report upon request. Volume pricing and blanket order arrangements are available for MRO and OEM customers maintaining KRAFT Series installations across multiple sites.

© 2026 TOPNLMS. All rights reserved.
Original Source: https://topnlms.com
Contact: [email protected] | +86 18359293191