Bosch Rexroth DKC1.03-008-3-MGP-01VRS EcoDrive 03 Upgrade

Product Overview

Bosch Rexroth DKC1.03-008-3-MGP-01VRS EcoDrive 03 Upgrade: Seamless Migration from Legacy PROFIBUS Servo Systems

When your production line depends on a Bosch Rexroth EcoDrive 03 servo axis and the original DKC1.03-008-3-MGP-01VRS reaches end-of-life or fails without warning, every hour of unplanned downtime translates directly into lost output and escalating maintenance costs. TOPNLMS maintains verified stock of the DKC1.03-008-3-MGP-01VRS — a 8 A continuous-current, single-axis PROFIBUS-DP servo drive from Bosch Rexroth’s EcoDrive 03 platform — specifically to support engineers and procurement teams executing controlled upgrades or emergency replacements on legacy motion-control architectures.

The EcoDrive 03 family was engineered for high-dynamic servo applications across machine tools, packaging lines, printing presses, and general factory automation. The DKC1.03-008-3-MGP-01VRS variant integrates a PROFIBUS-DP fieldbus interface (MGP firmware option) directly on the drive, eliminating the need for a separate communication module and simplifying cabinet wiring. Its 3-phase 400 V AC input, compact DIN-rail-compatible housing, and standardised X1/X2 motor connector pinout make it a direct mechanical and electrical substitute for earlier EcoDrive 01 and EcoDrive 02 axes operating in the same rack or control cabinet.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a legacy EcoDrive 01 or EcoDrive 02 servo axis to the DKC1.03-008-3-MGP-01VRS rarely involves the drive alone. In practice, the retrofit scope typically extends to several interconnected components within the same control cabinet or machine frame.

On the power supply side, the DKC1.03-008-3-MGP-01VRS is designed to operate alongside Bosch Rexroth HNF01 or HNS02 mains filter and supply modules, which provide the regulated DC bus voltage shared across multiple drive axes in a common-bus topology. If your existing power supply module is also approaching end-of-life, replacing it in the same maintenance window eliminates a second unplanned outage.

For multi-axis machines, the drive slots into a standard Rexroth DKC controller rack alongside other EcoDrive 03 axes such as the DKC1.03-018-3-MGP-01VRS (18 A variant) or the DKC1.03-040-3-MGP-01VRS (40 A variant), allowing mixed-current-rating configurations within a single PROFIBUS segment without additional gateway hardware.

The PROFIBUS-DP network connecting the DKC1.03-008-3-MGP-01VRS to the host PLC — whether a Siemens SIMATIC S7-300, S7-400, or a Beckhoff CX series controller — requires correct GSD file installation and node address assignment via the onboard DIP switches. If the upstream PLC itself is being modernised in parallel, the drive’s PROFIBUS interface remains fully compatible with PROFIBUS-DP V1 masters, ensuring no fieldbus protocol changes are needed on the controller side.

Wiring between the drive and the servo motor is retained using the existing Bosch Rexroth IKS or INK series motor power cables and IKG encoder cables, provided the motor connector shell and pin assignment match the X2 and X8 interface specifications of the DKC1.03 platform. In most EcoDrive 01-to-03 migrations, the motor cables are reused without modification, significantly reducing rewiring labour on the machine floor.

For applications where the control cabinet also houses a Bosch Rexroth VT-HNC100 hydraulic axis controller or a Rexroth IndraMotion MLC motion logic controller, the DKC1.03-008-3-MGP-01VRS integrates natively into the same IndraWorks engineering environment, allowing axis parameterisation, drive optimisation, and diagnostic monitoring from a single software platform without additional licensing.

Where signal isolation between the drive’s analog I/O and the PLC’s 24 V digital I/O is required — particularly in older installations with mixed grounding schemes — a Phoenix Contact MINI Analog signal isolator or equivalent DIN-rail-mounted isolator module can be inserted inline without affecting the drive’s control loop performance. Similarly, if the machine’s HMI is a legacy Bosch Rexroth VCP series operator panel communicating over PROFIBUS, it continues to operate on the same DP segment as the upgraded drive without protocol conversion.

Finally, for commissioning and parameter backup, a standard Rexroth programming cable (IB IL 24 DO 4/EF or USB-to-RS232 adapter) connected to the drive’s X2 serial diagnostic port allows full parameter upload, comparison against the previous drive’s backup file, and axis optimisation using DriveTop or IndraWorks Ds before the machine is returned to production.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor power and encoder cables when replacing a DKC01.3-008-3-FW with the DKC1.03-008-3-MGP-01VRS?
A: In the majority of cases, yes. The X2 motor power connector and X8 encoder interface on the DKC1.03 platform maintain the same pinout as EcoDrive 01 and 02 predecessors when using standard Rexroth IKS/INK motor cables and IKG encoder cables. Always verify the encoder type (resolver, DSF, or EnDat) matches the firmware configuration of the replacement drive before powering up.

Q: Do I need to update my PROFIBUS GSD file after installing the DKC1.03-008-3-MGP-01VRS?
A: If you are replacing a drive with an identical MGP firmware variant, the existing GSD file and PLC hardware configuration typically remain valid. If migrating from a non-MGP (e.g., FW or SE) variant, you will need to install the EcoDrive 03 MGP GSD file in your PROFIBUS master configuration tool (e.g., Siemens STEP 7 HW Config or TIA Portal) and reassign the node address.

Q: Will the DKC1.03-008-3-MGP-01VRS fit in the same cabinet space as my existing EcoDrive 01 unit?
A: The EcoDrive 03 8 A variant shares a comparable form factor with its EcoDrive 01 and 02 counterparts. Verify the DIN rail depth and cabinet door clearance against the DKC1.03 mechanical drawing (available in the Rexroth documentation portal) before installation, particularly in tightly packed cabinets.

Q: Can I transfer parameters from the old drive to the new DKC1.03-008-3-MGP-01VRS?
A: Parameter migration between EcoDrive generations is supported via IndraWorks Ds or DriveTop using the parameter export/import function. Some parameters may require manual adjustment due to firmware version differences. TOPNLMS recommends performing a full axis optimisation run after parameter transfer to confirm dynamic performance.

Q: What is the DC bus voltage compatibility when mixing DKC1.03 drives with older EcoDrive axes on a common bus?
A: The DKC1.03 platform operates on the same 750 V DC bus as EcoDrive 01 and 02 drives when powered by a compatible Rexroth HNF or HNS supply module. Mixed-generation common-bus configurations are supported, but the total continuous current draw of all axes must remain within the supply module’s rated output capacity.

Warranty Assurance

Every DKC1.03-008-3-MGP-01VRS unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each unit undergoes a functional power-on test and visual inspection to verify connector integrity, firmware version, and absence of physical damage. Units are packed in anti-static foam-lined cartons with desiccant to prevent moisture ingress during international transit.

Should a warranty claim arise within the coverage period, TOPNLMS provides a replacement unit or full refund upon return and inspection of the defective item. Our after-sales response target is within 24 hours of claim submission on business days. Replacement units are dispatched from our Xiamen warehouse via DHL Express or equivalent tracked courier, with typical transit times of 3–7 business days to most destinations.

For procurement teams requiring documentation, TOPNLMS can provide a proforma invoice, packing list, certificate of origin, and test report upon request. Bulk orders of 3 or more units qualify for priority allocation and extended payment terms subject to credit approval.

To place an order, request a quotation, or confirm stock availability, contact our technical sales team directly:

• Email: [email protected]
• Phone / WhatsApp: +86 18359293191
• Website: https://topnlms.com

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