How to Fix O M N l loom shaft encoder！

How to Fix O M N l loom shaft encoder
    OMNI loom encoder and encoder PAT loom Although the purpose is the same, are designed to detect the actual angle of the loom main shaft, but the structure is different. PAT loom encoder shaft through the ditch to take graphics to indicate the position of the code wheel spindle. 0MNI loom encoder is a special two-phase rotary motor, the stator and the rotor of two parts. It sets its own space completely orthogonal windings when the rotor is rotated, given the relative position of the rotor windings ask consequent changes in the stator and rotor, the rotor angle of the output voltage to a certain function, by calculation, Get spindle position, in fact 0MM loom encoder type brushless resolver.
The encoder is working loom pointer Encoder defective or incomplete work cycle detection angle will cause the loom can not function properly. 0MNI loom encoder mounted on the shaft near the end of the cloth, drop cloth when easy impact to the encoder connection cable, a long time easy to connect to the internal winding wire tearing, winding must be taken out for repairs. Since 0MNI loom brushless rotary transformer, special structure, the signal input sine and cosine and output windings are mounted on the stator portion, it is necessary to find a way to take them out separately.
In the case of the encoder structure clear, open encoder, noting that part of the rotor windings in good condition, the output of the stator winding installed in the inner end portion, it relies on magnetic flux coupling of the rotor position signal output to go. The key is how to repair without damage to the stator windings of the inner end of the output winding comes out. After careful analysis, it should be first out of the top stator windings, stator winding portion has noted ring side as the force object, processing nylon rod into the appropriate size, as percussion instruments, with a hammer, get out of the stator section so that the output winding easily taken out. OMNI loom encoder output winding part is easy to break. Open output winding insulation found on the broken wire in the solder joint, re-weld the wires, insulation protection to re-do the work, with a line fastened winding, re-install the stator portion, and then loaded into the rotor section. The key is how to adjust, because the encoder stator and the rotor flux is coupled to rely on access to information. Set, the air gap between the rotor is very small, do not pay attention when installing the adjustment will cause uneven distribution of the air gap, causing the output signal is not normal, so in the assembly must be patient and careful. Finally, the repaired machine is powered encoders, rotary encoder gear, make sure the range of 360-degree angle can be detected.
By OMNI loom encoder repair, and gradually mastered the method of repair and key maintenance time, and the encoder connection cable again with a reasonable set, to avoid the impact of the cable when the drop cloth.

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