OMRON R88M-1L1K530T-S2 Servo Motor

R88M: Prefix for Omron servo motors

1: 1S Series (EtherCAT bus servo)

L: 100 mm flange size

1K5: 1.5 kW

30: Rated speed 3000 rpm

T: Battery-free absolute encoder (23-bit)

S2: Without electromagnetic brake, no oil seal, shaft with keyway and tapped hole

Core Electrical Specifications

Product Features

1. Battery-free absolute encoder: No backup battery required to retain home position, reducing maintenance and the risk of home position loss. Absolute position is readable immediately after power-on.
2. EtherCAT bus servo: The 1S series adopts EtherCAT integrated servo, supporting high-speed real-time bus motion control and suitable for multi-axis synchronous equipment.
3. 100 mm flange, 19 mm keyed shaft with general mechanical mounting interface, widely used for material handling, gantry systems, manipulators and CNC equipment.
4. Non-brake version: Designed for horizontal transmission except vertical axes. For vertical axis applications, select brake-equipped model: R88M-1L1K530T-BS2.

Typical Application Scenarios

Automated production lines, gantry modules, multi-axis manipulators, chip mounters, packaging equipment, custom CNC machines, high-speed positioning platforms.

Selection & Replacement Notes

Brake-equipped model with identical power rating: R88M-1L1K530T-BS2

Incremental encoder version: R88M-1L1K530H-S2

The servo drive must be matched: R88D-1SN15H-ECT. Mixing with other series (such as G5, G3) drives is not allowed.

No-oil-seal version: Not applicable to environments with heavy dust or cutting fluid splashes. Additional mechanical protection is required.

Troubleshooting Focus (Common Faults for This Model)

1. Home position abnormality: Battery-free absolute encoders rarely lose home position. If encoder alarm occurs, inspect encoder cable and connector pins first.
2. Overload alarm: Verify load inertia and acceleration torque. This 1.5kW 3000rpm motor provides 14.3Nm peak torque and allows short-time shock load.
3. Shaft end leakage: This model has no oil seal. Do not deploy it in oil-immersed environments.

Application Fields of Omron 1S Series EtherCAT Servo Motors (R88M)

The 1S series features EtherCAT high-speed bus, battery-free 23-bit absolute encoder, ultra-short control cycle (125μs) and built-in STO safety function. It focuses on multi-axis synchronization and high-precision positioning. It is widely deployed for general automation equipment and compatible with NX/NJ motion controllers and Sysmac Studio platform.

1. Electronics & Semiconductor Equipment (Core Applications)

SMT chip mounters, PCB depanelers, AOI inspection machines, dispensing machines, soldering machines

Wafer handling, semiconductor packaging, FPC flexible board cutting

Advantages: Excellent multi-axis synchronization and trajectory tracking precision; no homing required after power-up to reduce downtime and maintenance.

2. Packaging & Food Automation Production Lines

Horizontal flow wrappers, vertical form fill seal machines, capping machines, labelers, heat sealing machines, sorting conveyors

Food dispensing, carton forming, bundling equipment

Advantages: Supports FSoE safety function to realize SLS safe speed limitation. Operators can adjust machines online without full-machine emergency stop, improving uptime.

3. 3C & Component Custom Machining Equipment

CNC drilling/tapping special machines, polishing equipment, injection molding manipulators, workpiece transfer gantries

Mobile/laptop housing processing, pressing equipment, automatic screw locking machines

Advantages: Fast response and low overshoot; stable gantry dual-axis synchronization performance.

4. Material Handling & Manipulators

Cartesian robots, gantry modules, truss loading/unloading, conveyor positioning, transfer mechanisms

Selection Tip: Use brake model (e.g. R88M-1L1K530T-BS2) for vertical axes; non-brake version R88M-1L1K530T-S2 for horizontal axes.

5. Textile, Printing & Paper Machinery

Digital textile printers, flexographic printers, die-cutters, paper slitting, winding & unwinding equipment

Advantages: EtherCAT bus ensures tension control and multi-axis synchronization with small fluctuation for winding processes.

6. Lithium Battery / New Energy Front-End Equipment

Electrode cutting, roll pressing, winding, cell handling, auxiliary positioning mechanism for coating

Advantages: Battery-free absolute encoder eliminates home position loss caused by battery aging, suitable for long-term continuous production.

7. Medical & Test Automation (General Automation Tooling, NOT life-critical medical devices)

Automated test fixtures, sample positioning stages, automated assembly jigs

⚠️ Notice: Not directly applicable to implantable life-support medical equipment, aerospace, nuclear power, lifting equipment and other high-safety-level scenarios, as specified in product manual.

Selection & Compatibility Notes

Bus: Must be paired with R88D-1SNxx-ECT EtherCAT drives and NX/NJ controllers.

Environment: S2 models without oil seal are prohibited for environments with cutting fluid and heavy dust splashes.

Safety: Standard drives come with STO; enhanced models support full safety functions including SS1/SS2/SOS. Hardware STO reaches PLe / SIL3; bus FSoE achieves PLd / SIL2.

Advantages & Disadvantages of Omron 1S (R88M) EtherCAT Servo

✅ Advantages

1. Battery-free 23-bit multi-turn absolute encoder (Core Highlight)

Absolute position can be read directly after power-on with no homing required. No backup battery completely removes maintenance pain points including battery aging, leakage and home position loss, lowering maintenance cost for long-running production lines.

2. EtherCAT high-speed bus with 125μs ultra-short control cycle

Superior performance for multi-axis synchronization, electronic cam and gantry dual-axis following suitable for high-speed precision equipment. Multiple axes can be daisy-chained via single Ethernet cable to reduce wiring greatly. FSoE safety function runs over EtherCAT network to save massive hardwired safety circuits.

3. Built-in high-grade safety functions

All drives are equipped with STO as standard. Enhanced versions support full safety functions SS1/SS2/SOS/SLS. Hardware STO achieves PLe / SIL3; bus-based FSoE reaches PLd / SIL2. It meets automation equipment safety specifications and reduces external safety relay configuration.

4. TDF 2-DOF control algorithm with powerful auto-tuning

Suppression of overshoot and shortened settling time for low-rigidity loads and high inertia ratio mechanisms. Auto-tuning is available to help stabilize commissioning for less experienced technicians. Models ≤750W reach peak torque up to 350% for strong short-time impact load capacity.

5. Integrated Sysmac Platform for high equipment development efficiency

Combined with NX/NJ motion controller and Sysmac Studio software, motion, safety and logic programming are integrated. Batch parameter copy and built-in data trace facilitate standardized production and fault diagnosis for multiple machine units. Single-cable option (power + encoder + brake combined cable) simplifies wiring, and IP67 connectors fit machine installation.

6. Wide power coverage

Power range from 50W to 15kW, with low/medium inertia models and complete flange specifications, covering small transfer units to high-power processing equipment.

❌ Disadvantages

1. Strong ecosystem binding and poor compatibility with third-party PLCs

Native design prioritizes Omron NX/NJ controllers. Although it adopts standard EtherCAT, deploying it on other brands of EtherCAT masters (Inovance, Beckhoff etc.) will cause complicated adaptation of partial PDO, electronic cam and FSoE safety functions, leading to high commissioning difficulty instead of plug-and-play. Pulse command is not supported. Replacing controller is required for retrofitting old pulse PLC systems.

2. High overall system cost

Motor + drive package price is higher compared with domestic EtherCAT servo products. Cables, spare parts and repair service cost are also higher than domestic alternatives, with limited cost performance for low-budget simple standalone machines.

3. Limitations of default TDF mode for high-order synchronization scenarios

Factory-default TDF mode fits positioning applications, but ODF mode delivers better following error performance for electronic cam, CNC interpolation and master-slave following. Manual control mode switching and speed feedforward configuration are required; unfamiliar technicians may encounter trajectory deviation.

4. Restricted environmental version selection

S2 versions have no oil seal, not suitable for direct use under cutting fluid splash and heavy dust environments. Extra protection or alternative models are required for harsh environments. Improper flat key disassembly may damage the encoder.

5. Thermal constraints for side-by-side drive installation

For drives ≤3kW mounted closely (spacing＜10mm), allowable ambient temperature drops to 0~45℃. Models ≥4kW must reserve ≥40mm spacing between drives, occupying more cabinet space.

6. Dedicated commissioning software

Sysmac Studio is mandatory; simple servo commissioning software cannot be used for quick standalone tuning. The software package is large with certain PC configuration requirements, increasing the threshold for on-site offline diagnosis.

✍️ Selection Summary

Recommended for: Multi-axis synchronization, high precision, safety function required, long-term maintenance-free applications paired with NX/NJ platform for mid-to-high end automation equipment (chip mounters, gantries, winding machines, inspection equipment).

Not recommended for: Low-cost simple standalone machines, pulse-based retrofit projects, complex electronic cam applications on non-Omron master stations, budget-limited projects.

Full Model List of Omron 1S (R88M-1□) EtherCAT Servo Motors

Model Code Explanation:

R88M-1Inertia CodePowerSpeedEncoder-B(with brake)S2/OS2/O

1L: Low inertia; 1M: Medium inertia

T: Battery-free absolute 23bit; H: Incremental encoder; C: 400V class battery-free absolute

Suffix S2: Keyed shaft with tapped hole, no oil seal; OS2: Keyed shaft with oil seal; O: Smooth shaft

-B: Electromagnetic brake; no B = without brake

Voltage: 200V (single/three phase); C models = 400V three phase

1. 200V Class｜Low Inertia 1L Series (3000rpm)

Incremental Encoder H

R88M-1L75030H-S2 / R88M-1L75030H-BS2 ｜750W

R88M-1L1K030H-S2 / R88M-1L1K030H-BS2 ｜1.0kW

R88M-1L1K530H-S2 / R88M-1L1K530H-BS2 ｜1.5kW

R88M-1L2K030H-S2 / R88M-1L2K030H-BS2 ｜2.0kW

R88M-1L3K030H-S2 / R88M-1L3K030H-BS2 ｜3.0kW

Battery-free Absolute T (Group including your model)

R88M-1L75030T-S2 / R88M-1L75030T-BS2 ｜750W

R88M-1L1K030T-S2 / R88M-1L1K030T-BS2 ｜1.0kW

R88M-1L1K530T-S2 / R88M-1L1K530T-BS2 ｜1.5kW

R88M-1L2K030T-S2 / R88M-1L2K030T-BS2 ｜2.0kW

R88M-1L3K030T-S2 / R88M-1L3K030T-BS2 ｜3.0kW

1. 200V Class｜Medium Inertia 1M Series

3000rpm｜Incremental H

R88M-1M10030H-S2 / R88M-1M10030H-BS2 ｜100W

R88M-1M20030H-S2 / R88M-1M20030H-BS2 ｜200W

R88M-1M40030H-S2 / R88M-1M40030H-BS2 ｜400W

R88M-1M75030H-S2 / R88M-1M75030H-BS2 ｜750W

3000rpm｜Battery-free Absolute T

R88M-1M10030T-S2 / R88M-1M10030T-BS2 ｜100W

R88M-1M20030T-S2 / R88M-1M20030T-BS2 ｜200W

R88M-1M40030T-S2 / R88M-1M40030T-BS2 ｜400W

R88M-1M75030T-S2 / R88M-1M75030T-BS2 ｜750W

2000rpm｜Battery-free Absolute T

R88M-1M1K020T-S2 / R88M-1M1K020T-BS2 ｜1.0kW

R88M-1M1K520T-S2 / R88M-1M1K520T-BS2 ｜1.5kW

R88M-1M2K020T-S2 / R88M-1M2K020T-BS2 ｜2.0kW

1000rpm｜Battery-free Absolute T

R88M-1M90010T-S2 / R88M-1M90010T-BS2 ｜900W

R88M-1M2K010T-S2 / R88M-1M2K010T-BS2 ｜2.0kW

R88M-1M3K010T-S2 / R88M-1M3K010T-BS2 ｜3.0kW

III. 400V Three Phase｜1L / 1M (C code, 23-bit battery-free absolute)

1L Low Inertia 3000rpm

R88M-1L75030C-S2 / BS2 ｜750W

R88M-1L1K030C-S2 / BS2 ｜1.0kW

R88M-1L1K530C-S2 / BS2 ｜1.5kW

R88M-1L2K030C-S2 / BS2 ｜2.0kW

R88M-1L3K030C-S2 / BS2 ｜3.0kW

R88M-1L4K030C-S2 / BS2 ｜4.0kW

R88M-1L5K030C-S2 / BS2 ｜5.0kW

1M Medium Inertia

2000rpm

R88M-1M1K020C-S2 / BS2 ｜1.0kW

R88M-1M1K520C-S2 / BS2 ｜1.5kW

R88M-1M2K020C-S2 / BS2 ｜2.0kW

R88M-1M3K020C-S2 / BS2 ｜3.0kW

1500rpm

R88M-1M4K015C-S2 / BS2 ｜4.0kW

R88M-1M5K515C-S2 / BS2 ｜5.5kW

R88M-1M7K515C-S2 / BS2 ｜7.5kW

R88M-1M11K015C-S2 / BS2 ｜11kW

R88M-1M15K015C-S2 / BS2 ｜15kW

1. Matching Servo Drives R88D-1SNxx-ECT (200V)

R88D-1SN01H-ECT：100W

R88D-1SN02H-ECT：200W

R88D-1SN04H-ECT：400W

R88D-1SN08H-ECT：750W

R88D-1SN10H-ECT：1kW

R88D-1SN15H-ECT：1.5kW

R88D-1SN20H-ECT：2kW

R88D-1SN30H-ECT：3kW

1. Matching Servo Drives R88D-1SNxxF-ECT (400V)

R88D-1SN06F-ECT：600W

R88D-1SN10F-ECT：1kW

R88D-1SN15F-ECT：1.5kW

R88D-1SN20F-ECT：2kW

R88D-1SN30F-ECT：3kW

R88D-1SN55F-ECT：5.5kW

R88D-1SN75F-ECT：7.5kW

R88D-1SN110F-ECT：11kW

R88D-1SN150F-ECT：15kW

Supplement: 1SAN Safety-enhanced Drives (with FSoE Safety)

R88D-1SAN02H/04H/08H/10H/15H/20H/30H-ECT (200V)

R88D-1SAN10F/15F/20F/30F/55F/75F-ECT (400V)

Selection Remarks

1. For the same motor body, three shaft-end options available: O (smooth shaft), S2 (keyed shaft without oil seal), OS2 (keyed shaft with oil seal). Only commonly used S2 is listed above.
2. -B = Built-in electromagnetic brake. BS2 must be selected for vertical axis applications.
3. 100V low-voltage versions (R88D-1SNxxL-ECT,100/200W) are rarely used domestically and excluded from this list.
4. 50W small-power 1S motor (R88M-1M05030T) is an early small specification and gradually phased out.