The patented product T44A15-3P produced by Longfeng Electric Technology Development Co., Ltd.,
It is designed and manufactured specifically for three-phase AC motors of 1.5Kw or less. Because it is not affected by harsh environment, it is resistant to dust, corrosion-resistant gas, fast on-off speed, and wide range of adaptability voltage. Even places with unstable working voltage can accurately complete the action. It has high structural strength, dust, moisture, and anti-dust. Corrosion, long life, fast switching speed, no noise, small size, no spark, explosion-proof, vibration resistance, shock resistance, strong anti-vibration and so on.
The application of T44A15-3P in and out of the kiln in the ceramic industry is of great significance.
One: lifting motor, baffle motor:
After replacing the wind with no contact, the positioning accuracy is the same, and there will be no high and low lifting racks due to factors such as wear of common contactor iron cores, and even program confusion (proximity switch misalignment), little maintenance during use, and failure rate. Greatly reduced.
II: Replace the inverter with the T44A15-3P stepper motor and segment stop motor at the kiln machine:
Now many manufacturers use inverters to drive these two motors. This is wrong because the inverter needs acceleration time and deceleration time (at least 0.1s or 100ms), that is, it lags behind the running signal. The two motors are not in synchronous operation. The stepper motor is always in a stopped state (the brick stops after stepping optoelectronics and waits for the segment to stop the motor from sending the bricks again). It is therefore necessary to reduce the speed of the stop motor to eliminate the acceleration time. The resulting collision. However, when the brick gap is small and continuous, when the bricks (stepping) are bound to appear large gaps between the bricks is not conducive to entering the kiln (prone to block the kiln), we can see that the two situations are contradictory, it is Difficult to adjust well, either collision or gap increases.
The application of two T44A15-3P instead of the inverter can easily solve this problem, because the long wind non-contact action speed, no acceleration time and deceleration time, say open, stop, stop, just adjust once That's all, no matter how the gap and the number of bricks sent from the connecting line, they can be arranged in a consistent manner, and no collision will occur. It will not be affected by the voltage level.
Three: kiln tail brick motor and roller table waiting for the motor with T44A15-3P,
Because the zero-point contact of the wind is zero-crossing, and there is no spark during the switch-off, this will have no impact on the insulation of the motor coil when it is turned on, the motor starts smoothly, and there is no timing belt or helical gear that is dragged. Impact can greatly extend its service life.
The ordinary contactor is a random function without zero-crossing, and it will generate sparks when it is switched off, so that when the ordinary contactor is turned off, it often generates transient high voltage (especially near 90 degrees). This high voltage pair The windings of the motor windings have a large impact, causing inconsistencies at each start and stop that cause a shock to the motor and the dragging machine, accelerating the motor coil heating and mechanical wear.
In addition, the use of frequency converters in the motor is also a waste, and due to the problem of acceleration and deceleration time, the positioning effect is also worse than using non-contact, especially when the mechanical resistance on the roller table is small, the positioning of brick rows often fluctuates.
Four: T44A15-3P for the motor around the press
In particular, in the turning machine at the press, all T44A15-3P should be used. The direct control of the T44A15-3P by the plc, without intermediate relays, makes the original failure rate of the control cabinet with the highest failure rate lowest. Now. Here the environment is too dusty, the intermediate relays and common contactors are often damaged, seeing the dust inside it is too large to clean up, if a new electrician blows with gas, then in a day or two it will put all the ordinary contactors inside all over. With the T44A15-3P, you don't need to worry about it. You only need to clean it once a year.
The common contactor in the fabric system is replaced with T44A15-3P plus a dedicated auxiliary contact T22A05F, and the effect is more obvious.