OMRON R88M-1M10030T-S2 Retrofit-Ready AC Servo Motor for 1S Series Control Systems
The OMRON R88M-1M10030T-S2 is a 1kW, 3000 rpm AC Servo Motor from OMRON’s 1S Series platform, engineered for high-precision motion control in demanding industrial automation environments. With a 23-bit absolute encoder, native EtherCAT communication, and an IP67-rated enclosure, this motor is purpose-built not only for new machine builds but also as a verified retrofit solution for aging W-Series and G5-Series servo systems that have reached end-of-life or are facing discontinued spare parts availability.
For system integrators and maintenance engineers managing legacy production lines, the R88M-1M10030T-S2 represents a technically sound migration path. Its mechanical footprint is compatible with many W-Series motor mounts, and when paired with the R88D-1SN10H-ECT 1S Series EtherCAT servo drive, the combination delivers a fully validated drive-motor set that can replace aging R88D-WT10H W-Series drives and their associated motors without requiring a complete control cabinet redesign.
Upgrade Compatibility Table
| Parameter | Legacy (W-Series / G5-Series) | R88M-1M10030T-S2 (1S Series) |
|---|---|---|
| Rated Output | 1kW | 1kW |
| Rated Speed | 3000 rpm | 3000 rpm |
| Encoder Type | 17-bit incremental / absolute | 23-bit absolute (multi-turn) |
| Communication Protocol | MECHATROLINK-II / EtherCAT | EtherCAT (CoE) |
| Shaft Configuration | Key + seal (T-S2 compatible) | Key + seal (T-S2) |
| IP Rating | IP65 | IP67 |
| Mounting Interface | Flange mount (IEC standard) | Flange mount (IEC standard) |
| Recommended Drive | R88D-WT10H / R88D-KN10H-ECT | R88D-1SN10H-ECT |
| Backplane / Rack | CJ2 / CS1 rack-based I/O | NX-series / EtherCAT coupler compatible |
| Commissioning Tool | CX-Drive / CX-Programmer | Sysmac Studio (NJ/NX controller) |
| Warranty | Varies (legacy, often expired) | 12-Month Warranty |
| Retrofit Recommendation | Direct mechanical replacement; drive and encoder cable upgrade required | |
Retrofit Planning for Existing Automation Systems
A successful retrofit using the R88M-1M10030T-S2 begins well before the motor arrives on-site. Engineers should first audit the existing control cabinet to confirm available power supply capacity — the 1S Series motor and its paired R88D-1SN10H-ECT drive require a stable 200–240V AC single-phase or three-phase input, and the existing S8VK-series power supply or equivalent 24VDC control power rail must be verified for adequate current headroom to support the new drive’s logic and brake circuits.
Terminal wiring is a critical checkpoint. The encoder cable for the 1S Series uses a dedicated R88A-CAKB003SR-E or equivalent shielded encoder cable, which differs from the W-Series encoder connector pinout. Technicians must not attempt to reuse legacy encoder cables without a verified adapter or rewire. Similarly, the motor power cable connector (U/V/W + PE) should be replaced with a 1S-compatible cable assembly to ensure proper shielding and connector locking.
On the backplane side, if the existing system uses a CJ2M CPU with a CJ1W-NCF71 MECHATROLINK-II motion control unit, migration to EtherCAT requires either upgrading to a CJ2M-CPU3x with an CJ1W-NC881 EtherCAT motion controller, or transitioning the entire motion platform to an NJ501 or NX701 Sysmac controller. The NX-series architecture natively supports EtherCAT and allows the R88M-1M10030T-S2 to be addressed directly as an EtherCAT slave node without additional gateway hardware.
Module addressing must be reconfigured in Sysmac Studio. Each 1S Series drive is assigned a node address via rotary switch on the R88D-1SN10H-ECT drive front panel, and the corresponding axis object in the NJ/NX motion program must reference the correct node ID. If the legacy program was written in CX-Programmer using MECHATROLINK motion instructions, the axis control logic will need to be rewritten using PLCopen motion function blocks in Sysmac Studio — a process that typically takes 4–8 hours for a single-axis retrofit depending on program complexity.
HMI screen updates are often overlooked during servo retrofits. If the existing NS-series HMI or NB-series HMI displays axis status, alarm codes, or torque feedback from the legacy drive, those data addresses will change when the new 1S drive is commissioned. Engineers should map the new drive’s EtherCAT PDO objects to the HMI tag database before go-live to avoid blank or incorrect displays during startup. For sites using NA-series HMI panels already integrated with Sysmac Studio, this mapping can be done within the same project file, significantly reducing engineering time.
Downtime Control During System Migration
Minimizing production downtime during a servo motor retrofit requires a structured pre-commissioning strategy. The recommended approach is to complete all drive parameter configuration, axis tuning, and program logic updates on a bench test rig before the scheduled maintenance window. Using Sysmac Studio’s offline simulation mode, engineers can validate the motion profile, homing sequence, and fault response logic against the new R88M-1M10030T-S2 and R88D-1SN10H-ECT combination without connecting to the live machine.
On the day of cutover, the sequence should follow: isolate and lock out the control cabinet, disconnect the legacy motor and drive, install the new motor and drive, connect encoder and power cables, restore control power, verify EtherCAT link status on the NJ/NX controller, download the updated program, and perform a slow-speed jog test before returning to production speed. This structured sequence typically allows a single-axis servo replacement to be completed within a 2–4 hour maintenance window.
To protect the original program logic, always export and archive the existing CX-Programmer or Sysmac Studio project before making any changes. Store the backup on a separate device, not only on the machine’s local HMI or PLC memory card. If the retrofit involves a NX-ECC203 EtherCAT coupler or NX-series I/O modules, verify that the I/O configuration in Sysmac Studio matches the physical rack layout before downloading — a mismatch will trigger a configuration error and prevent the controller from entering RUN mode.
Retrofit Support FAQ
Q1: Is the R88M-1M10030T-S2 a direct drop-in replacement for the R88M-W10030T-S2 W-Series motor?
Mechanically, yes — the flange dimensions, shaft diameter, and key/seal configuration (T-S2) are compatible. However, the encoder connector and cable are not interchangeable. A new 1S-compatible encoder cable and the R88D-1SN10H-ECT drive are required. The legacy R88D-WT10H drive cannot operate the 1S Series motor.
Q2: What commissioning steps are required after installation?
After physical installation and cable connection, use Sysmac Studio to assign the EtherCAT node address, configure the axis parameters (motor type, encoder resolution, inertia ratio), perform auto-tuning, and verify the homing and motion profiles. All drives are pre-tested at our facility before shipment to confirm basic electrical integrity.
Q3: Can this motor be used with a CJ2M controller and CJ1W-NC881 EtherCAT motion unit?
Yes. The R88M-1M10030T-S2 paired with the R88D-1SN10H-ECT drive is compatible with the CJ1W-NC881 EtherCAT motion controller on a CJ2M platform. Ensure the CJ2M CPU firmware is updated to the version that supports 1S Series drive profiles, and configure the axis using the NC881 setup tool within CX-One.
Q4: What does the 12-month warranty cover?
All units supplied by SMARTNEXMSK carry a 12-month warranty from the date of shipment, covering manufacturing defects and verified functional failures under normal operating conditions. Each unit undergoes pre-shipment functional testing including insulation resistance check, encoder signal verification, and rotation test. Warranty claims are supported with replacement or repair, subject to inspection. Contact sales@smartnexmsk.com for warranty registration and claim procedures.
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