YEJK series electromagnetic brake three-phase asynchronous motor is a brake motor carefully designed according to the requirements of national standard JB/T6465. It is composed of general three-phase asynchronous motor (Y2 series) and DZK series DC electromagnetic brake. Its power level and installation size are in line with JB/T6456 industry standard and IEC72 international standard, and it is an economical brake motor.This series of products have obtained the certificate of ISO 9001 system and CCC product demonstration.
Scope of use
This series of motors are suitable for non-flammable, explosive and non-corrosive environments. They have the requirements of fast braking, accurate positioning, reciprocating operation and anti-sliding. They are used as main or auxiliary transmission in various machines, such as lifting machinery, transportation machinery, printing machinery, food machinery, construction machinery, woodworking machinery, deceleration machinery and metallurgical machinery.
When electrified, the electromagnet produces a strong electromagnetic force to suck the armature plate to compress the brake spring. The two dual surfaces of the friction disc are separated from the pressure of the armature plate and the plane of the back cover of the motor, and the motor can rotate flexibly. When power is lost, the armature plate is pressurized by the pressure of the brake spring to tighten the friction disc and generate strong friction braking moment, so that the rotating motor brakes rapidly and achieves accurate positioning.
1. The motor protection level is IP44 and the brake is IP23.
2. The cooling mode of motor is IC411 (self-fan cooling).
3. The release device is an external wrench, which is flexible and convenient to release manually.
4. Motor insulation grade is B and F, brake insulation grade is F.
5. Installation size and power level of the motor fully conform to JB/T6456 industry standard and IEC-72 international standard.
6. 71 is aluminium-shell motor, 80-160 is aluminium-shell or cast-iron-shell motor.
Conditions of use
1. Rated voltage: The standard product is AC380V 50Hz, or can be designed according to customer requirements.
2. Working mode: S1 (continuous working system);
3. The altitude should not exceed 1000mm.
4. Environmental temperature: - 15 ~40 C;
5. When the monthly mean minimum temperature is not higher than 25 C, the monthly average maximum relative humidity is 90%.
First, the motor part, when it leaves the factory at or below 3kW, is Y-connection, and the rest is delta-connection.
Secondly, the brake part, the motor with seat number 100 and below is DC99V, and the motor with seat number 112 and above is DC170V.
The motor is connected by Y and the brake is connected by DC99V as follows:
The motor is connected by delta and the brake is connected by DC170V as follows:
The motor is connected by Y and the brake is connected by DC170V as follows:
I. Air Gap Value of Brakes in Electric Machines of Various Specifications in this Series (Delta)
2. Inspection of air gap
As shown in Figure 1, the distance between armature plate 7 and electromagnet 12 is called air gap (delta). Normal working air
gap (delta) does not exceed the prescribed maximum air gap value. The motor is adjusted at the beginning when it leaves the
factory.Within the working air gap range, after running for a period of time, the air gap value will increase due to friction wear,
which will affect the normal suction and braking effect of the brake. Therefore, after the motor is used for a period of time, it
must press Maximum air gap value, select plug size, check the size of air gap. When inspecting, the size of the plug ruler can
be directly inserted into the air gap (delta). If it is inserted, it means that the air gap is too large and must be entered.Line
3. Air Gap Adjustment
The gauge thickness is selected according to the specified initial working air gap value. As shown in Fig. 1, loosen the inner
hexagonal screw 16, and screw the support adjusting screw sleeve 1 to the electromagnet direction for 1-2 mm to facilitate air
gap adjustment. Place the plug ruler in the air gap (delta) next to the support adjusting bolt, slowly screw in the inner hexagonal
screw 16, press the plug ruler. Fig. 1 then tighten the top cover 8 plane of the support adjusting screw sleeve, and pull out the
plug ruler. There are three groups of internal hexagonal screw 16 for DZK04-75 fixation. The air gap values on the edges of the
three groups of screw must be adjusted to the initial working air gap values according to the above methods. The air gap values
in the three places must be uniform. Finally, the internal hexagonal screw 16 must be tightened. There are four groups of
internal hexagonal screw 16 for DZK150 fixation. The debugging method is the same as above. Generally, diagonal screw
should be adjusted first. After adjustment, the air gap should be checked once with a plug ruler to prevent the unevenness of
the air gap. If there is no standard plug gauge for air gap adjustment, it can be replaced by similar thick and thin iron sheet.