Description
The Eaton RAMO-D02AI1S-C320S1 is a compact, decentralized direct-on-line (DOL) electronic motor starter designed for machine-mount applications without requiring a central control cabinet. It integrates switching, protection, and local diagnostic intelligence into a robust IP65 enclosure for distributed automation architectures.
Procurement and Availability Status
- Condition: New Surplus / Factory Sealed (verify exact revision lot upon inquiry)
- Standard Lead Time: 3 to 5 business days for stock items; 2 to 4 weeks for factory allocation
- Warranty: 12-month standard replacement warranty
- Pricing Note: Listed price is indicative and subject to market conditions. Contact our sales desk for a firm, project-specific quotation.
Technical Specifications
| Parameter | Value |
| Manufacturer | Eaton |
| Product / Model | RAMO-D02AI1S-C320S1 (RAMO Series) |
| Device Type | Decentralized Electronic Direct-on-Line (DOL) Motor Starter |
| Rated Operational Voltage | 400 V AC, 3-phase (50 / 60 Hz) |
| Rated Operational Current | Typically up to 2.0 A (exact range dependent on model suffix; verify with OEM datasheet) |
| Control Voltage | 24 V DC (internal logic and safe control inputs) |
| Communication Interface | AS-Interface / SmartWire-DT or standard fieldbus profile (verify network variant) |
| Enclosure Protection | IP65 / NEMA 4X (suitable for direct machine mounting in harsh factory zones) |
| Operating Temperature | -10 to +55°C |
| Short-Circuit Protection | Integrated electronic short-circuit and overload trip protection |
| Compliance Standards | IEC/EN 60947-4-1, CE, cULus |
Engineering and Integration Notes
Decentralized starters like the RAMO series minimize main cable runs by moving motor control directly to the machine frame close to the actuator.
- Addressing and Communication: When replacing a unit on an active SmartWire-DT or AS-Interface network, ensure the hardware address configuration matches the original node setting to prevent bus configuration faults.
- Thermal Derating: Ensure adequate airflow around the heatsink housing if mounted inside confined machine cavities. Operating near the upper thermal limit (+55°C) without clearance will trigger internal electronic thermal protection.
- Power Distribution: Verify that the incoming 400 V AC main feed and 24 V DC auxiliary control power connectors are torqued to specification to prevent high-resistance contact heating under full motor load.
Frequently Asked Questions
Q: What is the difference between the C320S1 and C320V1 variants?
A: Suffix variations typically denote specific internal firmware revisions, factory pre-parameterized profiles, or communication interface options (such as SmartWire-DT node addressing protocol variations). Always verify the exact suffix against your existing wiring schematic.
Q: Is manual local control supported on this unit?
A: RAMO units can include local diagnostic LEDs and optional manual override or service switches depending on the exact build variant. Verify the faceplate layout configuration with a datasheet check prior to ordering.
Q: Can this starter handle frequent inching or jogging operations?
A: Electronic DOL starters handle standard switching cycles well, but high-frequency jogging can cause internal semiconductor junction overheating. Ensure your duty cycle parameters align with IEC utilization category AC-53a.
