What kind of pneumatic motor valve for common faults are there

low protection grade: types of electric equipment form a complete set of pneumatic valves for fully enclosed squirrel-cage motor structure, the short intermittent duty ( Min has cooled. According to GB. - Requirements, the lowest IP protection grade, the highest degree of protection IP. Pneumatic valve working condition and environment is different, have different requirements of protection class. Protection grade low lumen will cause motor be affected with damp be affected with damp or dust and other foreign invasion, the motor insulation resistance drop caused damage.
improper packing, transportation and storage: pneumatic valve denso packaging should be waterproof, moisture-proof, dustproof measures, the packing should be strong and reliable. In the process of transportation due and rainproof measures, the product to the scene should be stored in ventilated and dry place, not in open air. Commissioning or maintenance banned in rainy weather, after debugging to tighten all fasteners, reliable seal tightly in place to ensure that all electrical parts.
of improper selection of the pneumatic valve types and stroke position adjustment: electric pneumatic valve is equipped with two important parameters. 1) pneumatic valve open-close torque value should include the practical work of torque value and torque pneumatic valve itself value, open-close torque size affect use pneumatic valve, great strength is bad, force small easy to leak. On the selection of supporting and due allowance ( General requirements is greater than the actual pneumatic valve operating torque value. ~。 Times. (2) the trip position control and pneumatic valve diameter size and length of opening and closing and structure form and so on. Pneumatic valve types of electric equipment form a complete set of motor for the special motor, short work, time - min。 Such as work in a short period, high load, damage to cause the loss of the motor heat insulation class.
pneumatic valve types and motor model mismatch: the selected motor model and denso requirements do not match, did not have enough corresponding allowance, the actual output torque overload operation, easy to cause damage of motor.
electrical protection failure, poor quality of electrical components, pneumatic valve types within the micro switch is the key to control body parts, when the pneumatic valve than stroke position, micro switch to cut off the power supply, the overload protection function. Most denso factory will travel with the torque in series with the protection when the stroke or ultra torque, micro switch in time to cut off the control power, ac contactor coil so as to cut off the main loop of the motor.
debug improper installation and use: (1) pneumatic valve types are divided into horizontal and vertical installation. In the vertical motor end when installation below. In thread sleeve rubber seal failure, the chamber of lubricating grease through cable and outlet into the motor internal cavity is easy to make the winding short circuit and burn out. (2) according to the JB - Regulation, the hand wheel rotation direction of the electric device should be consistent with the output shaft rotational direction and to close the pneumatic valve clockwise, counterclockwise for pneumatic valve open. If not in conformity with provisions of actual rotation direction of motor, the need to change any two phase of three-phase power supply ( Switch. Otherwise due to the inverse, disable protection motor damage. (3) the pneumatic motor is valve for high load short work. If the debugging time is too long for more than the rated time, lead to motor heat damage
pneumatic valve electric and pneumatic valve connection does not match: multi-turn electric pneumatic valve can be divided into two kinds of torque and thrust. Mostly for three jaw torque type connection or key connection, pneumatic valve, denso don't inherit the axial thrust. Thrust type most for threaded connections, can withstand larger axial thrust. To pneumatic electric and pneumatic valve valve connection between mating surfaces must intervene with no limit of pneumatic valve and electric pneumatic valve is equipped with the appropriate clearance. Make the installation on the output shaft of the worm shaft not jumped out to a, to ensure that the worm gear and worm mesh mesh center plane has a good effect, guarantee the transmission torque at rated output torque value.
the motor temperature protection failure: motor with temperature control switch, when in a pneumatic valve motor torque or long time operation, the motor temperature rise, more than set temperature, temperature control switch immediately to cut off the control circuit, protect the motor.
set cycle running censorship: pneumatic valve types after installation and debugging, should establish a complete overhaul system. Long time no pneumatic valve types, periodic testing of the motor stator winding insulation resistance value.