Key Technical Specifications
- Product model: SAC-SW225/EB
- Manufacturer: ORMEC
- Motor type: AC brushless permanent magnet servo motor
- Rated output power: 225 W
- Continuous output current: 2.25 A
- Peak output current: 4.5 A
- AC input: 120 / 240 VAC single-phase, 50/60 Hz
- Control modes: Position, velocity, torque
- Feedback: Incremental encoder
- Operating temperature: -10 °C to +60 °C, non-condensing
- Protections: Overcurrent, overvoltage, undervoltage, short circuit, overtemperature
- Mounting: Panel mount with convection cooling
Product Introduction
ORMEC SAC-SW225/EB is a single-axis digital servo amplifier. It drives brushless servo motors for automated positioning on packaging, material handling and assembly equipment. This unit accepts encoder feedback to close position or velocity loops. It interfaces with ORMEC Orion motion controllers; front-panel LED indicators show power, fault and axis status. (The terminal strip sits on the lower edge of the black metal enclosure.)
Installation & Configuration Guide
Preparation (10 min) Lock out and tag machine power. Measure incoming AC line voltage to confirm 120/240 VAC. Gather torque screwdriver, multimeter, ESD wrist strap and wiring diagram. Check motor nameplate current rating.
Removal (5–10 min) Take photos of power, motor and encoder wiring. Remove each wire terminal one by one. Unfasten four panel mounting screws. Slide drive away from cabinet wall. Do not pull encoder cable by the connector.
Installation (10 min) Secure drive to panel with four mounting screws. Leave minimum 50 mm clearance top and bottom for airflow. Connect AC input, motor power and encoder wires to the terminal block. Torque terminals per ORMEC specification.
Power-On & Test (10 min) Apply AC power. Confirm power LED illuminates. Clear stored faults from drive memory. Run static encoder check; verify position count updates. Execute a low-speed jog test before full production operation.
Troubleshooting Quick Reference
| Symptom | Likely Cause | Verification Action |
|---|---|---|
| No power, all LEDs off | Missing AC input or blown input fuse | Measure line-to-neutral voltage; inspect fuse |
| Red fault LED steady | Overcurrent or motor short | Disconnect motor cable, power drive to isolate fault |
| Axis hunts, unstable positioning | Incorrect gain tuning or loose encoder connection | Re-seat encoder connector; reduce proportional gain |
| Overtemperature fault | Insufficient cabinet airflow or clogged heatsink | Clean heatsink; verify fan/cabinet ventilation |
| Motor does not move, no fault | Enable signal missing or wrong mode selected | Check hardware enable input; confirm control mode |
Dimensions, Mounting & Wiring Notes
- H×W×D: 200 mm × 150 mm × 100 mm
- Mounting: Panel mount; vertical orientation required. Maintain clearance for convection cooling.
- Terminal notes: Separate power cables and encoder cables. Route encoder wiring in shielded cable, single-point shield ground. Do not run motor power wire parallel with feedback wiring. Match phase sequence between drive and motor; wrong phase sequence triggers immediate overcurrent fault.
FAQ
Q: Is ORMEC still producing the SAC-SW225/EB servo drive new? A: No, OEM production has ended. Available stock consists of refurbished, fully tested drives. Verify with OEM manual for your motion controller compatibility.
Q: What power supply margin should I maintain for the AC input source? A: Reserve 20% current margin. Source must deliver enough current for the 4.5 A peak rating plus other cabinet loads.
Q: I’m replacing this drive on an automated assembly station. Can I swap it while the machine stays powered? A: No. AC mains and motor terminals carry hazardous voltage. Lock out and test zero energy before touching wiring. Hot swap risks electric shock and drive damage.
Q: What signs of damage should I inspect before accepting a used SAC-SW225/EB? A: Look for bulged capacitors, burn marks on PCB terminals, cracked enclosure, or discoloration near power components. A burnt odor from the interior board indicates power stage failure.
Q: Can I use SAC-SW225/EB with a non-ORMEC brushless motor? A: It may operate, but matching motor inductance, back EMF and encoder resolution is required. Mismatched parameters cause unstable motion or repeated overcurrent trips.
Q: Can I mount this drive inside a sealed cabinet without ventilation? A: No. It relies on natural convection. Sealed enclosures without airflow push internal temperature past the rated limit.
Q: What happens if I exceed the 4.5 A peak output rating repeatedly? A: The overcurrent protection trips the drive. Repeated overload can degrade IGBTs and shorten service life.
