SDZ1 Series Electromagnetic De-energized Brake Instruction Manual

1. Introduction

The SDZ1 series electromagnetic de-energized brake is designed to work in conjunction with YEJ series three-phase asynchronous motors. This brake operates by electromagnetic attraction when energized, and provides friction braking when de-energized. It is widely used in various industrial applications such as metallurgy, construction, chemical processing, food production, machine tools, and packaging machinery, where rapid stopping, precise positioning, and safety braking during power loss are critical.

Image: Description of YEJ Electromagnetic Brake functionality and applications.

2. Components Overview

The complete brake assembly typically includes the electromagnetic yoke, brake disc, rectifier, mounting screws, and a manual release handle. The coil is made of copper for enhanced high-temperature resistance.

Image: A complete set of SDZ1 series brake components, including the electromagnetic unit, brake disc, rectifier, and mounting hardware.

Image: Close-up view highlighting the all-copper coil for high-temperature resistance.

3. Setup and Installation

Proper installation is crucial for the safe and effective operation of the electromagnetic brake. Follow these steps carefully:

1. **Preparation:** Ensure the surfaces of the friction plate and armature are free of oil stains and are kept clean.
2. **Brake Disc Assembly:** Install the brake disc assembly, ensuring it slides smoothly and axially on the gear sleeve.
3. **Electromagnetic Yoke Installation:** Mount the electromagnetic yoke assembly onto the motor's end plate using the provided mounting screws.
4. **Air Gap Adjustment:** During installation, ensure the cam provides the correct air gap.
5. **Gear Alignment:** Verify that the gear does not exhibit any axial runout.
6. **Fan and Cover Installation:** Install the cooling fan, followed by the fan cover.
7. **Motor Fan Cover:** Install the motor fan cover.
8. **Release Handle:** Install the manual release handle.
9. **Final Tightening:** After installation, ensure the hollow bolt is screwed out and securely tightened on the motor rear cover or flange.

Image: Visual guide for installing the brake disc, electromagnetic yoke, cooling fan, and fan cover (Steps 5, 6, 9, 10).

Image: Visual guide for installing the motor fan cover and manual release handle (Steps 11, 12, 13), along with general installation precautions.

Wiring Diagram and Components

Image: Detailed cross-sectional view of the brake and a list of its internal components.

Key components shown in the diagram:

1. Magnet
2. Coil
3. Spring
4. Armature
5. Manual Release
6. Hollow Bolt
7. Mounting Screws
8. Brake Disc
9. Spline Sleeve
10. Motor End Cover
11. Brake Plate
12. Dust Cover
13. Sealing Flange

For specific wiring instructions, consult a qualified electrician or refer to the motor's wiring diagram, ensuring compatibility with the brake's rectifier (AC220V DC99V or AC380V DC170V variants).

4. Operating Instructions

The SDZ1 series is a de-energized brake, meaning it engages (applies braking force) when power is removed and releases (allows free rotation) when power is supplied to its coil. This design provides inherent safety in case of power failure.

• **Braking:** When the power supply to the brake coil is interrupted, the electromagnetic force disappears, and springs engage the brake disc, stopping the motor.
• **Release:** When power is supplied to the brake coil, an electromagnetic field is generated, pulling the armature and releasing the brake disc, allowing the motor to rotate freely.
• **Manual Release:** In situations where the motor needs to be moved manually without power, use the manual release handle (if installed) to disengage the brake. Ensure the manual release is disengaged before resuming powered operation.

5. Maintenance

Regular maintenance ensures optimal performance and longevity of your electromagnetic brake:

• **Cleanliness:** Keep the friction plate and armature surfaces clean and free from oil, grease, or other contaminants. Contamination can reduce braking effectiveness.
• **Air Gap Inspection:** Periodically inspect the air gap between the armature and the electromagnetic yoke. An incorrect air gap can affect braking performance. Adjust as necessary according to specifications.
• **Gear Inspection:** Check the gear for any signs of axial runout or excessive wear. Replace if necessary.
• **Component Wear:** Inspect the brake disc and other moving parts for wear. Replace worn components to maintain braking efficiency.
• **Electrical Connections:** Ensure all electrical connections to the brake coil and rectifier are secure and free from corrosion.

6. Troubleshooting

If you encounter issues with your SDZ1 series brake, consider the following:

• **Brake Not Engaging (Motor continues to rotate when power is off):**
  • Check power supply to the brake coil: Ensure power is indeed cut off.
  • Inspect air gap: If the air gap is too large, the brake may not engage properly.
  • Check friction surfaces: Ensure they are clean and not worn out.
  • Verify spring integrity: Damaged or weak springs may prevent proper engagement.
• **Brake Not Releasing (Motor does not rotate when power is on):**
  • Check power supply to the brake coil: Ensure the correct voltage (AC220V or AC380V) is being supplied to the rectifier, and the rectifier is outputting the correct DC voltage (DC99V or DC170V) to the coil.
  • Inspect rectifier: A faulty rectifier will prevent the coil from energizing.
  • Check coil continuity: An open circuit in the coil will prevent electromagnetic force generation.
  • Inspect air gap: If the air gap is too small, the armature might stick.
  • Check manual release: Ensure the manual release handle is fully disengaged.
• **Excessive Noise or Vibration:**
  • Check for loose mounting bolts.
  • Inspect for misalignment of components.
  • Check for worn or damaged brake disc/friction material.

If troubleshooting steps do not resolve the issue, contact customer support.

7. Specifications

The SDZ1 series electromagnetic brakes are available in various models, each designed for specific motor frame sizes and electrical configurations. Key specifications include:

• **Type:** Power Tool Parts, Electromagnetic Power Loss Brake
• **Use:** Commercial Manufacture
• **Material:** Aluminium-copper Alloy
• **Origin:** Mainland China
• **High-concerned chemical:** None
• **Customization:** Yes

Model-Specific Dimensions and Electrical Ratings

Image: Plan and cross-sectional views with a detailed table of dimensions for various SDZ1 models.

Note: "机座" refers to the motor frame size. Electrical ratings are derived from SKU properties, indicating common voltage options.

Package Dimensions and Weight

• **Length:** 15 cm
• **Width:** 15 cm
• **Height:** 8 cm
• **Weight:** 2.3 kg

8. User Tips

• **Voltage Compatibility:** Always ensure the brake's electrical rating (e.g., AC220V DC99V or AC380V DC170V) matches your motor and power supply to prevent damage.
• **Professional Installation:** For complex industrial setups, consider professional installation to ensure correct wiring and optimal performance.
• **Regular Checks:** Implement a routine check for the air gap and cleanliness of friction surfaces, especially in high-dust or oily environments.
• **Manual Release Usage:** Use the manual release only when necessary and ensure it is fully reset before operating the motor under power.

9. Warranty and Support

For warranty information, technical support, or replacement parts, please contact the seller, DIY TOOL Shop Store, directly through the platform where the product was purchased. Provide your order details and the specific model number of your brake for efficient assistance.