Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | SAC-SW220/EB |
| Manufacturer | ORMEC Systems |
| Drive Type | Digital brushless AC servo amplifier, ServoWire bus |
| Input Power | 230 VAC single-phase, 50/60 Hz |
| Continuous Output Power | 220 W |
| Continuous Motor Current | 3 A RMS |
| Control Modes | Torque, velocity, position |
| Feedback | Digital incremental encoder |
| Motion Bus | ServoWire serial link for multi-axis coordination |
| Status Interface | Front panel LED indicators for power, fault, enable |
| Operating Temperature | 0 °C to +50 °C, cabinet panel mount |
| Certifications | CE, UL recognized |
| Cooling | Convection cooling; maintain minimum 25 mm side clearance |
Product Introduction
The SAC-SW220/EB is a ServoWire digital servo amplifier built to drive ORMEC brushless servo motors. It executes closed-loop axis control for pick-and-place, cutting, and indexing machinery.
The drive handles current loop closure locally. It accepts motion setpoints over the ServoWire bus, which reduces host controller overhead for multi-axis synchronized moves. All tuning parameters store in nonvolatile onboard memory.
Installation & Configuration Guide
Preparation (10 min)
- Lock out and tag incoming AC power. Measure line voltage to confirm 230 VAC ±10%.
- Gather torque screwdriver, shielded motor cable, shielded encoder cable, and ServoWire bus cable.
- Inspect drive LEDs, terminal blocks, and power connector for bent pins or burn marks.
Removal (5–10 min)
- Confirm full power removal; wait 5 minutes for DC bus capacitors to discharge.
- Label motor, encoder, ServoWire, and AC power wires before disconnecting.
- Remove mounting screws; pull unit straight out from the cabinet panel.
Installation (10 min)
- Secure drive to metal cabinet panel with four mounting screws. Maintain side clearances.
- Connect AC input, motor power, encoder, and ServoWire wiring per ORMEC wiring diagram.
- Torque all power terminals to OEM specified value; check for loose strands.
Power-On & Test (10 min)
- Restore AC power. Confirm steady green power LED.
- Connect ORMEC motion setup software, upload axis configuration and servo tuning values.
- Run jog moves at low speed; verify encoder feedback and fault response.
Troubleshooting Quick Reference
| Symptom | Likely Root | Recommended Check |
|---|---|---|
| Red fault LED latches immediately | DC bus overvoltage or shorted motor winding | Measure motor winding resistance; check brake wiring |
| Motor will not jog; drive enable signal missing | Discrete enable input not asserted | Check enable interlock circuit and PLC logic |
| Position drift during steady-state hold | Encoder cable noise or loose encoder connector | Verify shield grounding; reseat encoder connector |
| ServoWire bus communication drops | Bus termination missing or cable damage | Check 120 Ω termination at bus endpoints |
| Drive trips on overheat | Insufficient cabinet airflow or blocked ventilation slots | Verify cabinet fan operation and clearance gaps |
Dimensions, Mounting & Wiring Notes
- H×W×D: 263 mm × 58 mm × 280 mm
- Mounting: Vertical panel mount inside industrial cabinet; metal backplate required for heat transfer
- Terminal notes: Motor and encoder cables must use shielded construction. Bond shield to cabinet ground at drive end only. Do not route servo power cables parallel to low-level sensor wiring. ServoWire bus requires 120Ω termination at the two farthest nodes.
FAQ
- Q: Can I run this drive with a non-ORMEC brushless motor? A: Not without validation. The drive expects motor electrical parameters matched to ORMEC motor models. Mismatched motor constants can trigger overcurrent faults.
- Q: What software do I use to tune the SAC-SW220/EB? A: ORMEC Motion Explorer software. Older software releases lack full parameter access for EB hardware variant.
- Q: I am replacing an existing SAC-SW220/EB. Can I reuse the old parameter file? A: Yes, after confirming motor part number matches. Perform a low-speed jog test after download to catch encoder polarity errors.
- Q: Does the ServoWire bus support multi-axis synchronization? A: Yes. ServoWire coordinates move profiles across multiple drives for electronic gearing and cam profiling.
- Q: What protection features are built into this drive? A: Overcurrent, overvoltage, undervoltage, overtemperature, motor stall, and encoder loss fault detection. Fault state latches until power cycle or clear command.
- Q: Can I mount this drive horizontally? A: No. Horizontal mounting blocks convection cooling and will trigger repeated overtemperature trips.
- Q: I have one axis that randomly faults during high-speed moves. Where should I start? A: Check encoder cable shielding and connector pins first. Vibration can loosen encoder connections and cause intermittent position faults.
