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Part of the Omron Servo series — see the full model table, lifecycle status and replacement parts.

Omron R88M-1M1K520C-S2 — two large cardboard boxes side-by-side showing the blue OMRON brand stripe, the TYPE R88M-1M1K520C-S2 label, AC SERVO MOTOR description, SER. NO. 082515005003, the manufacturer mark OMRON Corporation, MADE IN THE PHILIPPINES and the EAN barcode 4549734165112

Omron R88M-1M1K520C-S2 — 1S Servo Motor, 1.5 kW

SKU: R88M-1M1K520C-S2

USD 398.00

Omron R88M-1M1K520C-S2 1S AC servo motor, 1.5 kW, 400 V three-phase, 2000 rpm, 23-bit absolute. In stock.

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Product Overview

The Omron R88M-1M1K520C-S2 is a 1.5 kW 400 V three-phase AC servo motor from the 1S family, manufactured by Omron Corporation. Hengyixin Automation ships this drive from Xiamen with the matching motor or PSU pairing recommended in the related products row below.

The motor delivers 7.16 Nm rated torque at 2000 rpm and 21.5 Nm peak torque on a 400 V three-phase supply. The encoder is a 23-bit battery-free absolute unit, so the motor keeps its multi-turn position through power-off without a battery. The flange is 130 mm square with a 22 mm keyed shaft with tap, no brake, no oil seal.

Operating ambient is 0 to +40 C and IP67 protects the body against water-jet washdown. The matching 400 V EtherCAT drive is the R88D-1SN10F-ECT. The previous hyx copy listed 17-bit incremental and IP65 - both were wrong; verified spec is 23-bit absolute (no battery) and IP67. The R88M-1L1K530C-S2 is the 1.5 kW 400 V sibling on the same frame size.

Key Features

  • 1S-series AC servo motor, 1.5 kW rated output, 400 V three-phase, 7.16 Nm rated / 21.5 Nm peak torque, 2000 rpm
  • 23-bit battery-free absolute encoder, no homing required after power-off, multi-turn tracking
  • 130 mm square flange, 22 mm keyed shaft with tap, no brake, no oil seal, 9048 g unpacked
  • IP67 body, 0 to +40 C operating, matched 400 V drives R88D-1SN15H-ECT and the STO / SS1 / SLS -ECT-21 safety variant
  • SKU: R88M-1M1K520C-S2
  • Series: Omron 1S-series AC servo motor (R88M-1M)

Best-Fit Applications

  • Heavy-duty indexing axis on a packaging line where the 1.5 kW covers the indexing arm and the 23-bit absolute skips homing
  • Multi-axis conveyor where the motor daisy-chains on EtherCAT and an NJ501 controller runs cyclic position control at 1 ms on a 400 V class line
  • Spare replacement on a CNC machine where the older R88M-K1K520C-S2 needs to be upgraded to a 23-bit absolute battery-free encoder

Buying Checklist

  • Pick the R88M-1M1K520C-S2 for a 1.5 kW 400 V three-phase 1S servo motor with 23-bit absolute encoder and 130 mm flange.
  • Pick the R88M-1M75030T-S2 instead when the line runs 200 V single-phase and 750 W is enough torque.
  • Pick the R88D-1SN15H-ECT as the matching EtherCAT drive on the same 400 V 1.5 kW frame size.

Technical Specifications

Manufacturer Omron Corporation (Japan)
Series Omron 1S-series AC servo motor (R88M-1M)
Model / SKU R88M-1M1K520C-S2
Drive Supply 400 V three-phase
Rated Output 1.5 kW
Rated / Peak Torque 7.16 Nm rated, 21.5 Nm peak
Rated Speed 2000 r/min (3000 r/min max momentary)
Encoder 23-bit absolute, no battery required
Flange / Shaft 130 mm square flange (LC), 22 mm keyed shaft with tap
Brake / Oil Seal No brake, no oil seal (suffix -S2)
Protection IP67
Matching Drives R88D-1SN15H-ECT (400 V 1.5 kW EtherCAT), R88D-1SN15H-ECT-21 (STO / SS1 / SLS)

Manufacturer documentation

Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.

FAQ for R88M-1M1K520C-S2

Is the R88M-1M1K520C-S2 200 V or 400 V?
400 V three-phase. The '1M1K520C' part of the model code is the 1.5 kW 400 V frame. For a 200 V class 1.5 kW motor, pick the R88M-1M1K520T-S2.
Does this motor need an encoder battery?
No. The 23-bit absolute encoder is battery-free - multi-turn position is stored in the encoder IC itself, so the motor does not need a battery box on the cable.
What drive pairs with the R88M-1M1K520C-S2?
The R88D-1SN15H-ECT (400 V three-phase, 1.5 kW, EtherCAT). For a safety-equipped drive with STO / SS1 / SLS over FSoE, use the R88D-1SN15H-ECT-21.
What cable does the R88M-1M1K520C-S2 need?
Power cable R88A-CA1C005SF-E (5 m, non-braked) or R88A-CA1C010SF-E (10 m). Encoder cable R88A-CR1B003NF-E (3 m). Both are the 1S-series standard cables rated 400 V 0.4 to 1.5 kW.

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