Ed30/5 ↔ Brake Matching
Ed30/5 is the standard thruster for the following small electro-hydraulic drum brakes (and many valve / gate / clamp mechanisms):
| Brake Model | Brake Wheel Ø | Thruster | Typical Torque Class |
|---|---|---|---|
| YWZ4-150/E23 | Ø150 | Ed30/5 | small |
| YWZ9-200/E23 | Ø200 | Ed30/5 | small |
| YW-E200/E23A | Ø200 | Ed30/5 | small |
| YW-K200/E23A | Ø200 | Ed30/5 | small |
| YWZ4-125/E23 | Ø125 | Ed23/5 (smaller) | smallest |
| YWZ8-200/E30 | Ø200 | Ed50/6 (larger) | medium |
Matching principle: the thruster's push-out force must overcome the brake's spring preload at the set torque. Ed30/5 (300 N / 50 mm) covers the full small-brake range above. If your brake needs >300 N release force, step up to Ed50/6 (500 N).
Working Principle & Wiring Logic
Power ON → Release
Motor starts → centrifugal pump builds pressure → piston & push-rod extend (~0.5 s) → push the brake lever open → brake released.
Power OFF → Fail-Safe Close
Motor stops → pressure drops → return spring retracts the rod (~0.4 s) → brake springs close. Even on power loss, the brake is safely engaged.
Control logic
Ed30/5 is a single-phase or 3-phase AC motor (specify when ordering). It runs only during the release interval.
For holding-open long periods, use a PWM energy-saver module to reduce coil heating.
Optional limit switches signal "fully released" / "fully closed" to the PLC.
Optional built-in heater prevents condensation in humid or cold storage.
