Part of the Omron Servo series — see the full model table, lifecycle status and replacement parts.
Omron R88D-1SN04H-ECT — 1S Servo 400 W 1 Phase 230 VAC
SKU: R88D-1SN04H-ECTUSD 250.00
1S-series EtherCAT servo drive with 400 W continuous output, single-phase 200 VAC supply, FSoE STO/SS1/SLS safety, 23-bit encoder
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Product Overview
The Omron R88D-1SN04H-ECT is the 400 W mid-power variant in Omron's 1S-series EtherCAT servo drive family — the right pick for single-phase 200-240 VAC installations that need precise positioning or speed control above the 200 W entry point (covered by the R88D-1SN02H-ECT, already done previously in our catalog) and below the 750 W step (R88D-1SN08H-ECT, also in this catalog 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 1S-series is Omron's flagship servo platform,
Brake variants: -S2 (no brake, no oil seal — the most common), -BS2 (with brake + no oil seal — for vertical-axis applications where holding torque is needed at stop), -T (with 23-bit multi-turn absolute encoder, no oil seal), -B (with brake).
Key Features
- Single-phase 200-240 VAC supply
- 400 W continuous rated output
- 1S-series mid-power servo drive
- EtherCAT cycle time 125 µs
- SKU: R88D-1SN04H-ECT
- Series: 1S Servo Drive (R88D-1SN family, EtherCAT)
- Voltage: 200-240 VAC
Best-Fit Applications
- Pick-and-place axis on a packaging line — R88D-1SN04H-ECT drives an R88M-1M40030H-S2 servo motor for the X-axis, 400 W is sufficient.
- Cartesian-X / Y / Z stage for CNC machining — three R88D-1SN04H-ECT drives running R88M-1M40030H-S2 motors coordinated by NJ501-1500 via.
- Conveyor tracking on a bottling line — the 1S drive receives a master-position value via EtherCAT and uses electronic-gear mode.
Buying Checklist
- Pick R88D-1SN02H-ECT for 200 W version
- Pick R88D-1SN08H-ECT for 750 W version
- Pick R88D-1SN15H-ECT for 1.5 kW version
Technical Specifications
| Model | R88D-1SN04H-ECT |
|---|---|
| Series | 1S Servo Drive (R88D-1SN family, EtherCAT) |
| Type | Mid-power servo drive with FSoE safety, 1-Phase 230 VAC supply |
| Rated Output | 400 W (0.4 kW) continuous |
| Peak Output (150 % overload) | 600 W (0.6 kW) for 3 s typical |
| Peak Output (300 % overload) | 1200 W (1.2 kW) for 0.5 s peak |
| Drive Supply Voltage | Single-phase 200-240 VAC, 50/60 Hz |
| Input Voltage Range | 170 to 264 VAC (single-phase) / 200 to 264 VAC (3-phase equivalent) |
| Input Current (continuous at rated output) | 2.6 A rms typical |
| Inrush Current (at power-on) | 5-10× rated, ~200 ms duration |
| Output Voltage | 0 to 240 VAC (variable, PWM 8 kHz carrier; PWM frequency selectable 4/8/16 kHz) |
| Output Frequency | 0 to 500 Hz (with 3000 RPM motor) |
| Max Output Current (continuous) | 2.6 A rms |
| Max Output Current (peak) | 7.8 A rms (300 % overload) |
| EtherCAT Communications Cycle | 125 µs default (configurable 250 µs / 500 µs / 1 / 2 / 4 ms) |
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 R88D-1SN04H-ECT
What is the difference between R88D-1SN04H-ECT and R88D-KN04H-ECT-Z (previous generation)?
Both are 400 W 200 VAC servo drives with EtherCAT communications and 23-bit encoder support, but they span different product generations. R88D-KN04H-ECT-Z is the older Accurax G5 series (already in our catalog) with traditional safety (separate hardware wiring for STO — no FSoE). R88D-1SN04H-ECT (this SKU) is the new 1S series with FSoE (Functional Safety over EtherCAT), 125 µs cycle time (down from 250 µs on G5), battery-less absolute encoder (-T suffix), and embedded brake relay.
Does the R88D-1SN04H-ECT require three-phase supply?
No — this SKU is specifically the single-phase 200-240 VAC variant ('H' suffix). It runs on 1-phase utility power (L, N for 200 VAC single-phase, or L, L for 3-phase 200 VAC if you happen to have 3-phase available). The 200 W / 400 W versions (R88D-1SN02H-ECT, R88D-1SN04H-ECT) are typically single-phase; the 750 W / 1 kW and above (R88D-1SN08H-ECT, R88D-1SN10H-ECT) require 3-phase supply.
What FSoE safety is included with the R88D-1SN04H-ECT?
Three IEC 61800-5-2 safety functions are integrated: STO (Safe Torque Off, function 1) cuts the motor torque without removing DC-bus power — drive re-enables in 200 ms after STO clears. SS1 (Safe Stop 1, function 4) decelerates the motor on a controlled ramp to zero speed, then engages STO — used for controlled stop-and-disable at end-of-cycle.
Can the R88D-1SN04H-ECT support battery-less absolute encoder?
Yes — for batteries-less absolute position retention, the R88D-1SN04H-ECT pairs with R88M-1M40030T-S2 (or -BS2) servo motor that has the 23-bit multi-turn absolute encoder with capacitor-backed memory. The capacitor stores multi-turn data for approximately 7 days without power, sufficient for typical weekend shutdowns and immediate production-resume on Monday without re-homing. For longer power-off periods, the encoder cannot guarantee multi-turn retention; the drive will need to perform a home-return sequence.
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