Parker CPX2570S/E2/E3/F8/S1 Replacement for Compax-S

Product Overview

Parker CPX2570S/E2/E3/F8/S1 Replacement for Compax-S: Seamless Transition & Legacy System Upgrade

Migrating from an aging Parker Compax-S servo drive platform is one of the most common modernization challenges in industrial motion control. The Parker CPX2570S/E2/E3/F8/S1 is a high-performance servo drive from the Compax-S series, engineered for precise torque, velocity, and position control in demanding automation environments. Whether your existing CPX2570S unit has reached end-of-life, suffered a fault condition, or is simply no longer supported under your maintenance contract, TOPNLMS supplies verified replacement and upgrade units ready for immediate deployment.

The CPX2570S/E2/E3/F8/S1 designation encodes the drive’s power stage (2570S), feedback interface (E2/E3), fieldbus option (F8), and safety function (S1). Understanding this option code is critical when sourcing a drop-in replacement, because substituting an incompatible option combination will require re-engineering the motor feedback wiring, the fieldbus node address, and the STO (Safe Torque Off) safety circuit — all of which extend commissioning time and increase downtime risk. TOPNLMS verifies option codes against your order before shipment.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful Compax-S migration rarely involves replacing a single drive in isolation. In most retrofit projects, the CPX2570S/E2/E3/F8/S1 is installed alongside a broader set of motion and control components that must be verified for compatibility before the machine is returned to production.

On the motor feedback side, the E2 resolver interface and E3 EnDat encoder interface share the same 15-pin Sub-D feedback connector used across the Compax-S family. If the existing motor is a Parker MPP or MPJ series servo motor, the resolver cable assembly and pinout are retained without modification. For machines using third-party motors with EnDat 2.1 encoders, the E3 interface accepts standard EnDat signals, eliminating the need for a signal converter.

The F8 PROFIBUS DP fieldbus card communicates with the upstream Siemens S7-300 or S7-400 PLC — the most common host controller found in legacy Compax-S installations — using standard GSD files. The PROFIBUS node address is set via DIP switches on the drive front panel, matching the address previously assigned to the outgoing unit. No changes to the PLC hardware configuration or DP master settings are required in a like-for-like swap.

In multi-axis cabinets, the CPX2570S shares a common DC bus with adjacent Compax-S drives such as the CPX2540S and CPX2550S. The DC bus rail, bus capacitor module, and regenerative braking resistor remain in service. If the cabinet also houses a Parker Compax-S power supply module (PSM), its output voltage and current rating should be verified against the combined axis load after the replacement drive is installed.

For machines that use a Parker ACR9000 or ACR2000 motion controller as the trajectory generator — with the Compax-S drives operating in torque or velocity mode over an analog ±10 V command interface — the CPX2570S/E2/E3/F8/S1 accepts the same analog input wiring. No changes to the ACR controller program or axis scaling parameters are needed.

Where the control cabinet includes a Parker HMI590 or third-party Weintek/Siemens HMI panel communicating with the drive via PROFIBUS or RS-232, the replacement drive’s communication parameters (baud rate, parity, station address) are configured identically to the outgoing unit using C3 ServoManager, ensuring the HMI screens and alarm displays function without modification.

Signal isolation is occasionally required when the STO S1 safety circuit is integrated into a safety relay module such as the Pilz PNOZ or Sick i10-Lock. The CPX2570S S1 STO input accepts a 24 V DC dual-channel signal, compatible with standard safety relay output contacts. No additional signal isolators or level converters are needed in most installations.

Finally, if the retrofit scope includes replacing the Parker Compax-S programming cable (C3 IDS cable) — which connects the drive’s RS-232 service port to a laptop running C3 ServoManager — TOPNLMS can supply the correct cable assembly alongside the drive, ensuring the commissioning engineer has everything needed on-site from day one.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor wiring?
Yes. The CPX2570S/E2/E3/F8/S1 uses the same motor power and feedback connector pinout as all Compax-S drives. Existing cable assemblies are retained without modification in a direct replacement scenario.

Q: Do I need to re-download the drive parameters?
If the original drive’s parameter set was backed up using C3 ServoManager, the file can be uploaded directly to the replacement unit. If no backup exists, TOPNLMS recommends recording all axis parameters from the faulted drive (if still readable) before removal, or reconstructing the parameter set from the machine’s commissioning documentation.

Q: Is the PROFIBUS GSD file the same?
Yes. The F8 PROFIBUS DP option uses the same GSD file across the Compax-S range. The PLC hardware configuration does not need to be modified for a like-for-like drive replacement.

Q: What if my cabinet uses a shared DC bus?
The CPX2570S is fully compatible with the Compax-S shared DC bus architecture. Verify that the PSM power supply module’s output current rating covers the combined axis demand after replacement. No bus hardware changes are required.

Q: How is the STO safety function wired?
The S1 STO input accepts a 24 V DC dual-channel signal on the drive’s X4 safety connector. Wiring is identical to other Compax-S S1 variants. The safety relay output contacts connect directly without additional interface hardware.

Q: What physical space does the drive require?
The CPX2570S occupies the same mechanical envelope as other Compax-S drives in the 2500-series power range. DIN-rail mounting depth, width, and height are unchanged, making it a direct panel swap without cabinet modification.

Q: Can I use this drive with a non-Parker motor?
Yes, provided the motor’s feedback type matches E2 (resolver) or E3 (EnDat 2.1). Motor data (pole pairs, rated current, encoder resolution) must be entered into the drive parameter set during commissioning.

Warranty Assurance

Every Parker CPX2570S/E2/E3/F8/S1 unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Before dispatch, each unit undergoes a pre-shipment functional test covering power-on self-test, feedback interface verification, fieldbus communication check, and STO circuit continuity. Units that do not pass all test criteria are not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response time is within 24 hours on business days. Warranty coverage includes manufacturing defects, component failures under normal operating conditions, and firmware-related issues identified during commissioning. It does not cover damage resulting from incorrect installation, overvoltage events, or unauthorized modification.

For procurement teams managing planned maintenance schedules or emergency breakdown situations, TOPNLMS maintains stock of Compax-S series drives and can confirm availability, lead time, and export documentation (including CE declaration and country of origin certificate for Germany-manufactured units) at the time of inquiry.

Contact our technical sales team to confirm compatibility with your specific machine configuration before placing an order.