Description
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3. Product Introduction (Anti-Template)
Many packaging, converting, and high-speed motion machines still rely on the ELAU PacDrive MC-4 architecture. The MC-4/11/03/400 is the 3 A continuous version of the MC-4 digital servo drive, combining the power supply, power stage, and digital servo controller in a single compact housing.
It communicates with the central PacDrive controller over a fiber-optic SERCOS ring and is optimized for smaller synchronous servo motors. Plants that continue to run MC-4 based machines keep this drive available because an axis failure can stop an entire production line until a compatible replacement is installed and the SERCOS network is restored.
MC-4/11/03/400
MC-4/11/03/400
MC-4/11/03/400
4. Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | MC-4/11/03/400 |
| Order Number | 13 13 02 45 |
| Description | Digital Servo Drive / Amplifier |
| Continuous Current | 3 A rms |
| Peak Current | 7.5 A rms (1 s) |
| Rated Power | Approx. 2.1 kVA |
| Supply Voltage | 3 × 380–480 V AC (±10 %), 48–62 Hz |
| Control Voltage | 24 V DC |
| Communication | SERCOS (fiber optic) |
| Motor Output | 3 × 0–480 V AC |
| Cooling | Natural convection |
| Weight | Approx. 3.1 kg |
| Dimensions (approx.) | 100 × 400 × 320 mm |
5. Field Application & Technical Pitfalls (The Engineer’s Guide)
This drive is used as a single-axis servo amplifier in PacDrive MC-4 systems, commonly found on packaging machines, cartoning equipment, and other multi-axis motion platforms that require coordinated, high-dynamic movement.
Three pitfalls appear during replacement:
SERCOS fiber integrity – dirty, damaged, or incorrectly routed fiber-optic cables will prevent the drive from joining the ring or cause intermittent communication faults.
Motor and feedback matching – the drive expects compatible encoder or resolver feedback and electronic nameplate data; mismatched motors or feedback devices produce following errors or identification failures.
24 V control supply and grounding – insufficient or noisy 24 V control power can prevent the drive from reaching Ready state even when the main power is present.
One plant replaced an MC-4 drive and the axis would not enable. The new unit was healthy; the SERCOS fiber connector had been contaminated during the previous removal. Cleaning the fiber ends and verifying the ring restored normal operation.
6. Quality Control (QC) SOP & Transparency
- Inbound Verification – OEM labeling, full model number (MC-4/11/03/400), and order number are photographed and checked against the packing list; any signs of prior field use are noted.
- Live Rig Testing – drive is powered with known-good 3-phase and 24 V supplies and verified for successful power-up and status LED behavior.
- Parameter Testing – basic SERCOS communication readiness and power stage health are confirmed where test equipment is available.
- Final QA & Packaging – unit is sealed in an anti-static bag with desiccant, fitted with a QC-passed label showing test date and technician ID, then double-boxed for shipment.
7. Frequently Asked Questions (FAQ)
What is the ELAU MC-4/11/03/400?
It is a 3 A continuous digital servo drive from the ELAU PacDrive MC-4 series (now Schneider Electric).
What is the continuous and peak current rating?
3 A rms continuous and 7.5 A rms peak for 1 second.
What is the supply voltage range?
3-phase 380–480 V AC (±10 %), 48–62 Hz.
How does it communicate with the controller?
Via fiber-optic SERCOS interface.
What warranty comes with a new-surplus unit?
Twelve months from shipment against defects in materials and workmanship when installed within the published ratings.
How do I confirm the drive is healthy after installation?
Apply main and control power, verify the drive reaches Ready status, confirm it joins the SERCOS ring, and check that the axis can be enabled and follows commanded motion without new fault messages.
