ELAU DRIVE PS-5 Retrofit-Compatible Power Supply for Legacy Systems

ELAU DRIVE PS-5 Retrofit-Compatible Power Supply for Legacy Systems

The ELAU DRIVE PS-5 is a ruggedized DC power supply module engineered for demanding industrial automation environments. As ELAU’s PacDrive control platform reaches end-of-life support cycles, the DRIVE PS-5 remains a critical spare part for manufacturers operating legacy motion control systems — particularly those built around the ELAU MC-4, ELAU C400, and ELAU PacDrive M servo controller ecosystems. Whether you are managing a planned retrofit, responding to an unplanned failure, or executing a phased control cabinet upgrade, the DRIVE PS-5 provides a reliable, drop-in compatible power supply solution that minimises engineering rework and reduces commissioning risk.

Designed to deliver stable, regulated DC bus power to ELAU servo drives and associated I/O infrastructure, the DRIVE PS-5 supports the voltage and current profiles required by legacy PacDrive backplane architectures. Its ruggedised construction — featuring conformal-coated PCBs, wide operating temperature tolerance, and vibration-resistant terminal blocks — makes it suitable for continuous-duty applications in food and beverage processing, packaging machinery, printing lines, and pharmaceutical automation where environmental conditions are demanding and unplanned downtime is commercially unacceptable.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

A successful DRIVE PS-5 replacement begins well before the module arrives on site. Maintenance engineers should pull the original cabinet wiring diagram and confirm the terminal assignments for the 24 VDC supply rail, the PE (protective earth) connection, and any auxiliary 0 V reference lines feeding downstream ELAU I/O modules. In many PacDrive installations, the DRIVE PS-5 shares a common DC bus with the ELAU DRIVE PLC — the motion controller responsible for coordinating multi-axis servo sequences — so power sequencing during startup must be carefully managed to avoid nuisance faults on the SERCOS ring.

Before removing the failed unit, document the current module address configuration if DIP switches or rotary encoders are present on the faceplate. This address is referenced by the ELAU MC-4 or C400 controller during network initialisation and must be replicated exactly on the replacement DRIVE PS-5 to avoid axis recognition errors. Engineers working with ELAU PacDrive M servo amplifiers should also verify that the DC bus voltage delivered by the new power supply falls within the amplifier’s input tolerance window — typically ±10% of nominal — to prevent over-voltage protection trips during the first power-on cycle.

For cabinets that also house third-party components such as a Pilz PNOZ safety relay, a Phoenix Contact QUINT power supply providing auxiliary 24 VDC to field sensors, or a Beckhoff EK1100 EtherCAT coupler managing distributed I/O, the retrofit scope expands. Each of these devices draws from the same cabinet power budget, and the DRIVE PS-5 replacement is an ideal opportunity to audit total current consumption against the cabinet’s upstream circuit breaker rating. If the existing ELAU DRIVE PS-5 was operating near its rated output current, consider whether a higher-capacity replacement or a supplementary Phoenix Contact MINI power supply is warranted before recommissioning.

Communication continuity is another key planning checkpoint. In SERCOS II-based PacDrive systems, the fibre-optic ring connecting the ELAU MC-4 controller to each servo drive must remain intact during the swap. Technicians should prepare a spare SERCOS fibre patch lead and confirm that the ring topology is correctly re-established after the new DRIVE PS-5 is seated. For systems that have been partially migrated to CANopen or Ethernet-based protocols, verify that the network node address of the replacement module does not conflict with any existing Schneider Electric Modicon or Siemens S7 gateway nodes sharing the same control network segment.

HMI screen validation is frequently overlooked during power supply retrofits. If the site runs a Weintek or Siemens TP series HMI panel connected to the ELAU PacDrive controller via RS-232 or Ethernet, confirm that the HMI’s power supply status tags — typically mapped to controller diagnostic registers — still read correctly after the swap. A mismatch between the HMI’s expected power supply status word and the actual module response can trigger spurious alarm states that delay production restart.

Downtime Control During System Migration

Minimising production downtime during a DRIVE PS-5 replacement requires a structured pre-outage preparation protocol. Begin by backing up the complete PacDrive project — including axis parameters, cam profiles, and I/O mapping tables — using the ELAU PacDrive Commissioning Tool or an equivalent offline backup utility. Store this backup on a USB drive kept at the machine, not solely on a remote engineering workstation, so that on-site technicians can restore the program independently if network access is unavailable during the maintenance window.

Schedule the swap during a planned production break rather than responding reactively to a failure. A pre-staged DRIVE PS-5 — tested, addressed, and confirmed compatible before the maintenance window opens — reduces the active outage to the time required for physical module exchange, terminal reconnection, and a controlled power-on sequence. Target a total active outage of under 60 minutes for a straightforward like-for-like replacement in an accessible cabinet. More complex scenarios involving partial rewiring, address reconfiguration, or SERCOS ring re-commissioning should be budgeted at 2–4 hours with a qualified ELAU-trained engineer on site.

Protect the original program logic by never performing a full controller memory clear during a power supply swap unless the backup has been independently verified. The ELAU MC-4 and C400 retain their application programs in non-volatile flash memory, so a controlled power cycle after the DRIVE PS-5 replacement should restore normal operation without a program download — provided the module address and DC bus voltage are correctly matched. Confirm axis enable signals, safety circuit continuity through the Pilz or Sick safety relay chain, and fieldbus communication status before releasing the machine to production.

Retrofit Support FAQ

Q1: Is the ELAU DRIVE PS-5 a direct drop-in replacement for all PacDrive cabinet configurations?
For like-for-like SKU replacements within the same PacDrive generation, the DRIVE PS-5 is a direct physical and electrical replacement. Customers migrating from an earlier ELAU power supply variant should confirm output voltage, current rating, and backplane connector pinout against the original wiring diagram before installation. Our technical team can assist with cross-reference verification prior to shipment.

Q2: What pre-shipment testing is performed on each DRIVE PS-5 unit?
Every DRIVE PS-5 dispatched by NINERMAS undergoes functional load testing at rated output current, insulation resistance verification, and visual inspection for component condition and connector integrity. A test report is available on request. All units are covered by a 12-month warranty from the date of shipment.

Q3: Can the DRIVE PS-5 be used in a cabinet that has been partially upgraded to a newer control platform?
Yes. In hybrid retrofit scenarios where the ELAU PacDrive motion controller coexists with newer Schneider Electric Lexium or Siemens S7-1500 components, the DRIVE PS-5 continues to serve its original role as the dedicated power supply for the ELAU drive bus. No cross-platform firmware interaction is required, provided the DC bus is electrically isolated from the newer platform’s power rail.

Q4: What is the typical lead time and stock availability?
NINERMAS maintains in-stock inventory of the ELAU DRIVE PS-5 to support urgent replacement requirements. Standard orders ship within 1–3 business days. For customers managing long-term spare parts programs or multi-site maintenance contracts, we offer committed stock reservation and volume pricing. Contact our sales team at sale@ninermas.com or +0086 187 5021 5667 to discuss your procurement requirements.