Detection methods of this article to summarize the encoder: encoder nominal resistance testing, encoder switch detection, detection of double coaxial encoder.
1, encoder nominal resistance testing measurement, choose the appropriate range multimeter resistance, two pens and respectively in the encoder, between two fixed pin welding to measure total resistance is the same as the nominal value of the encoder.
If the measured resistance to infinity or a nominal value is big, the variable values indicate that the encoder has open or damaged.
Then two center table respectively by MAO encoder head and two sides of the fixed end, handle, slowly turn the encoder to spin its position from one extreme to another extreme position, normal encoders, whose hands indicating resistance from the nominal value (multimeter
Or 0 Ω)
Continuous variation to 0 Ω (
Or nominal value)
During the whole rotation, whose hands should be smooth change, and should not have any beat phenomenon.
If in the process of adjusting the resistance value, whose hands have beat phenomenon, show that the encoder is poor contact failure.
Straight slide type encoder detection method is the same.
2, switch, encoder testing for switch, encoders, should according to the nominal value of the above methods encoder and contact, it should also be detected if the switch is normal.
First rotary encoder shaft handle, flexible, check whether the switch is on and off if there is a clear 'click' sound.
The multimeter R×
1 Ω gear, two pens and respectively on the two external welding of encoder switch, rotary encoder shaft handle, make the switch, multimeter indicating resistance by infinity (
To turn off the switch, multimeter pointer from 0 Ω returns' & infin;
Measurement should be repeated when switched on, disconnect the encoder switch, observe the switch to each reaction.
If the switch in the 'open' the location of the resistance is not zero Ω, in the place of the 'closed' resistance to infinity, that the switch of the encoder is damaged.
3, double detection of coaxial encoder with proper range of multimeter resistance, measured resistance value of duplex encoder on two groups of encoder (
The resistance value between A and C and A resistance value between, C)
Whether are the same and is consistent with nominal value.
With A wire respectively encoder, C 'A' and encoder, C sub, and then use A multimeter measuring center head B, B ', the resistance value between the ideally, no matter what position encoder shaft to, B, B 'resistance value shall be equal to between two points A and C or A', C 'resistance between two points,
The multimeter pointer should always keep in A, C, or A ', C 'resistance on the scale of fixed)
If the multimeter pointer deflection, bad is that the synchronization performance of the encoder.
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