描述

PU516 直流電機的勵磁繞組和電樞繞組如果彼此直接反

PU516應(yīng)查看步進電機的絕緣，最好在接線之前完成對電機的單體調(diào)試查看，當電機契合現(xiàn)行標準要求時，再接外部線。一般低壓電機的絕緣電阻要求大于0.5MΩ，搖表使用500V。

但是，直流電機的勵磁繞組和電樞繞組如果彼此直接反，就可能使電機電樞帶電時，勵磁繞組不帶電而失磁，使電機空載時可能飛車，重載時燒壞轉(zhuǎn)子。因而，直流電機的電樞繞組和勵磁繞組的外部接線肯定不可彼此直接錯。

電機的外接線。電機接外部電線之前，應(yīng)先查看端蓋內(nèi)的各個繞組引出端是否有松動現(xiàn)象，當內(nèi)部引出線的壓接螺絲上緊之后，才干按要求的接線辦法連接短路片，并壓接外部線。

電機裝置和接線結(jié)束之后，電機試運轉(zhuǎn)前，工程師在此建議客戶這時應(yīng)主要進行下列查看：

（1）土建清掃整理結(jié)束；

（2）電機單體裝置、查看結(jié)束；

（3）電機操控回路等二次電路的調(diào)試結(jié)束，工作正常；

（4）搬動電機轉(zhuǎn)子時，轉(zhuǎn)動靈敏，無碰卡現(xiàn)象；

（5）電機主回路體系的悉數(shù)接線固定結(jié)實，無任何松動；

（6）其他附屬體系齊全合格。

在上述六條中，裝置電工應(yīng)特別注重第五條，這里所述的主回路體系是指自配電柜的電源輸入至電機接線柱的悉數(shù)主電路接線，都要連接結(jié)實。即每個刀開關(guān)、空氣開關(guān)、接觸器、熔斷器和熱繼電器，配電柜端子排的各個上、下接點及電機接線均要壓接牢靠，才干確保電機牢靠安全運轉(zhuǎn)，否則，就有燒壞電機的風(fēng)險。

步進電機在試運轉(zhuǎn)時，PU516要監(jiān)視電機的電流是否超越規(guī)定值，并作記載。別的，還應(yīng)查看下列項目：

（1）電機的旋轉(zhuǎn)方向是否契合要求。溝通電機反向時，PU516任意交換兩根電機接線即可；直流電機反向時，能夠交換兩根電樞電壓接線，也可改動兩根勵磁電壓接線。

（2）電機運轉(zhuǎn)的聲響契合要求，即無沖突聲、尖叫聲、卡碰聲及其他不正常的聲響，否則應(yīng)停機查看。

PU516 直流電機的勵磁繞組和電樞繞組如果彼此直接反

PU516 should check the insulation of the stepper motor, it is best to complete the monomer debugging of the motor before wiring, and then connect the external line when the motor meets the current standard requirements. Generally, the insulation resistance of low-voltage motors is required to be greater than 0.5MΩ, and the table uses 500V.

However, if the field winding and armature winding of the DC motor are directly opposite each other, it may make the motor armature charged, the field winding is not charged and magnetization is lost, so that the motor may run fast when it is unloaded, and the rotor is burned out when it is overloaded. Therefore, the external wiring of the armature winding and the excitation winding of the DC motor must not be directly wrong with each other.

External wiring of the motor. Before the motor is connected to the external wire, it is necessary to check whether the leading end of each winding in the end cover is loose. When the crimping screw of the internal lead wire is tightened, the short circuit sheet can be connected according to the required wiring method and the external wire is crimped.

After the motor installation and wiring is completed, before the motor test run, the engineer hereby recommends that the customer should mainly carry out the following review at this time:

(1) Completion of civil cleaning;

(2) Single motor device, view end;

(3) The debugging of the secondary circuit such as the motor control circuit is completed and the operation is normal;

(4) When moving the motor rotor, the rotation is sensitive and there is no bumping phenomenon;

(5) All the wiring of the main circuit system of the motor is fixed and strong, without any loosening;

(6) Other subsidiary systems are complete and qualified.

In the above six, the device electrician should pay special attention to the fifth, the main circuit system referred to here refers to the power input from the power distribution cabinet to the motor terminal all the main circuit wiring, should be connected firmly. That is, each knife switch, air switch, contactor, fuse and thermal relay, each upper and lower contact of the terminal block of the distribution cabinet and the motor wiring should be pressed firmly to ensure the safe operation of the motor, otherwise, there is the risk of burning the motor.

When the stepper motor is in trial operation, PU516 should monitor whether the current of the motor exceeds the specified value and make a record. In addition, you should also look at the following items:

(1) Whether the rotation direction of the motor meets the requirements. When the communication motor is reversed, the PU516 can arbitrarily exchange two motor connections; When the DC motor is reversed, two armature voltage lines can be exchanged, and two excitation voltage lines can also be changed.

(2) The sound of the motor operation meets the requirements, that is, there is no conflict sound, screaming, clamping sound and other abnormal sounds, otherwise it should be stopped for check.

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Company Introduction:
Chengdu Sunshine Xihe Co., Ltd. specializes in one-stop procurement consulting for imported industrial spare parts, offering original equipment and professional discontinued parts services. We are committed to providing efficient and reliable automation solutions for our customers. Customer support fast responseThe network of partners spans all continentsGlobal partner networkAlways achieve more delivery, be it parts, service or speed



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