The YEJK series electromagnetic brake three-phase asynchronous motor is a brake motor carefully designed according to the requirements of the national standard JB/T 6456. It is composed of two main parts: a universal standard type (Y, Y2 or Y3 series) three-phase asynchronous motor and a DZK electromagnetic brake. The shaft at the rear of the motor is connected to the friction disc of the brake through a spline, and the electromagnet is fixed on the rear cover of the motor, belonging to the power-off braking type.

When powered on, the electromagnet generates a strong electromagnetic force that attracts the armature plate and compresses the brake spring, causing the armature plate to release the pressure on the friction disc, and the electric motor can rotate flexibly. When the power is lost, the brake spring pressure is applied to the armature plate, causing it to tightly press against the friction disc, generating a strong frictional braking torque that quickly brakes the rotating motor and achieves accurate positioning.

The YEJK series electromagnetic braking three-phase asynchronous motor is suitable for environments that are not flammable or explosive, and is particularly suitable for various machinery that require fast braking, precise positioning, and anti slip requirements, such as lifting machinery, transportation machinery, printing machinery, packaging machinery, textile machinery, ceramic machinery, electroplating production lines, and rotating machinery that are matched with reducers.

Structural characteristics:
1. The protection level of the motor body is IP44, and the brake part is IP23;
2. The cooling method for the electric motor is IC411 (self fan cooling);
3. The insulation level of the motor is Class B, and the brake is Class F;
4. Manual release device, flexible, clear, and easy to use.

Usage conditions:
1. Rated voltage: The motor is AC380V 50Hz, and the brake is DC99V or DC170V (depending on the specifications);
2. Working mode: S1 (continuous work system);
3. Altitude not exceeding 1000m;
4. The maximum ambient temperature shall not exceed 40 ℃, and the minimum shall be -15 ℃;
5. When the monthly average minimum temperature is not higher than 25 ℃, the average maximum relative humidity of the wettest month is 90%.

Wiring method:

Note: 1. Connect the motor with a brake DC voltage of 99V according to the dashed line;
2. Connect the motor with a brake DC voltage of 170V according to the solid line;
3. If the motor uses a variable frequency power supply, the rectifier must not use a variable frequency power supply, and the incoming lines of power supplies 1 and 2 must be wired from the power supply in front of the frequency converter.

Inspection and adjustment of gaps:
The electromagnetic brake models range from DZK7.5 to DZK40, with a working clearance of 0.45-0.55mm and a maximum wear clearance of 1.0mm; DZK75 to DZK150 have a working clearance of 0.55-0.65mm and a maximum wear clearance of 1.2mm.

Inspection: Select the thickness of the feeler gauge relative to the maximum wear clearance, insert it into the clearance (δ), and adjust the clearance when it is greater than the maximum wear clearance.
Adjustment: Select the thickness of the feeler gauge relative to the working clearance of the brake, first loosen the support adjustment bolt (2), insert the feeler gauge into the clearance (δ) as close as possible to the support adjustment bolt, use an Allen wrench to spin the Allen screw (6) inward to hold the feeler gauge, then screw in the support adjustment bolt (2), tighten the end cover plane, then tighten the Allen screw (6), pull out the feeler gauge, and adjust other points.

According to the above method, adjust the three points of DZK7.5 to DZK75 brakes in sequence, and then check the three points with a feeler gauge. The gap should be basically uniform. The DZK150 brake has four support points. Using the same method, first adjust two of the points, then adjust the other two points. After adjustment, check the gap between the four points to ensure it is basically uniform.

Note: Specification codes DZK7.5~30 are for handle release, while DZK40~150 are generally released using internal hexagonal screws due to excessive spring force. If necessary, handle release can also be used.

Installation dimensions

B3 type motor with base and end cover without flange

B5 type motor base without feet, with a flange on the end cover



*R is the distance from the mating surface of the flange cover to the shoulder of the shaft extension

B35 type motor with base and flange on end cover



*R is the distance from the mating surface of the flange cover to the shoulder of the shaft extension

Technical data:

Notes:
1. The surfaces of the armature plate, rear cover, and friction disc must be free of oil stains and kept dry and clean;
2. The rated working voltage of the brake is a DC power supply. When wiring, please connect it correctly according to the voltage on the brake nameplate;
3. After long-term use, it is necessary to maintain the brake, check the clearance, remove friction powder, and improve the braking effect.