Unipolar 5 wire stepper terminals identification

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veiledcavalier

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Hello;
I have 5 wire stepper motor with data
" Stepping Motor
Step - Syn
SANYO DENKI, Made in Japan
DC 1.2 A, 0.72 DEG
type: 103H6500 - 7242FH6 - 1300 01"

I can't find datasheer for it
I tried a lot to know its terminals identification using ohm test, but all wires give the same value together!!!
Is it damaged ??? I tried also to apply direct voltage on it, but couldn't reach a clear result.

Your quick help is appreciated

thnx
 

Attachments

  • 41534040-Identifying-Stepper-Terminals.pdf
    291.5 KB · Views: 183

if you have 5 wires then it is a unipolar motor as the one shown in your pdf.
There will be only one wire (the common) that will have a lower resistance with all other wires

so if you have A+ A- B+ B- C the resistance will be (the ohms are just an example, it depends on the model)

A+ C =1 ohm
A- C =1 ohm
B+ C =1 ohm
B- C =1 ohm
A+ A- =2 ohm
A+ B+ =2 ohm
A+ B- =2 ohm
A- B+ =2 ohm
A- B- =2 ohm
B+ B- =2 ohm

Unfortunately you can only find the common wire this way, A+ A- B+ B- will all give the same result so you have to experiment with the movement of the motor to find the correct ones

Alex

EDIT: Ignore this post, your motor is a 5-Phase Stepping Motor as mister_rf has correctly pointed, I guess I was carried away from the Unipolar title of your post, sorry.
 
This stepping motor is wired with all windings of the motor in a cyclic series, with one tap between each pair of windings in the cycle. This type of configuration may be described as Delta 5-phase motors.

Control of either one of these multiphase motors requires 1/2 of an H-bridge for each motor terminal. The 5-phase motors have the potential of delivering more torque from a given package size because all or all but one of the motor windings are energized at every point in the drive cycle. This model 5-phase motors have high resolutions on the order of 0.72 degrees per step (500 steps per revolution).
 

Attachments

  • Datasheet 103H650x series.pdf
    57.5 KB · Views: 219
  • 5_fazowe.pdf
    7.2 MB · Views: 217

*My stepper is not like that in the pdf
But at all, I don't know any of them, so as u said I did all possible pairs ohm measure
I have colors of wires: RED, GRN, BLK, BLU, ORG

RED--GRN = 1.5
RED--BLU = 1.6
RED--BLK = 1.5
RED--ORG = 1.5

GRN--BLU = 2.2
GRN--BLK = 1.8
GRN--ORG = 1.9

BLU--BLK = 1.4
BLU--ORG = 1.9

BLK--ORG = 2.3

For the values above I used the COM probe of MM on the 1st wire and OHM probe on the 2nd wire. I did this because I noticed that if I reversed the probes the value changes within 0.5ohm!!
Do these values make any sense??

Sorry I missed ur edit for mistake...........OK thanx a lot ALL
 

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