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Gem6K Hardware Installation Guide
Step Motor Wiring Configurations – GT6K Steppers
Refer to the manufacturer’s motor specification document to determine the
motor’s wiring configuration. You can also determine the wiring configuration
with an ohmmeter using the procedures below (
4-Lead Motor, 6-Lead Motor, 8-
Lead Motor
). Once you determine the correct motor wiring configuration, use the
terminal connection diagram, shown at the end of this section, that applies to your
configuration.
4-Lead Motor
1.
Label one motor lead
A+
.
2.
Connect one lead of an ohmmeter to the
A+
lead and touch the other lead of the
ohmmeter to the three remaining motor leads until you find the lead that creates
continuity. Label this lead
A–
.
3.
Label the two remaining leads
B+
and
B–.
Verify that there is continuity between
the
B+
and
B–
leads.
4.
Proceed to the
Terminal Connections section below.
6-Lead Motor
1.
Determine, with an ohmmeter, which three of the six motor leads are common (one
phase).
2.
Label each one of these three motor leads
A
.
3.
Using the ohmmeter, verify that the remaining three leads are common.
4.
Label the remaining three leads
B
.
5.
Set the ohmmeter range to the 100 ohm scale (approximately).
6.
Connect the ohmmeter’s negative lead to one of the motor leads labeled
A
.
Alternately measure the resistance to the two remaining motor leads also labeled
A
.
The resistance measurements will reflect one of the following two scenarios.
Scenario #1
— The resistance measurements to the two remaining motor leads are
virtually identical. Label the two remaining motor leads
A+
and
A–
. Label the motor
lead connected to the negative lead of the ohmmeter
A CENTER TAP
(this is the
center tap lead for Phase A of the motor).
Scenario #2
— The resistance measurement to the second of the three motor
leads measures 50% of the resistance measurement to the third of the three motor
leads. Label the second motor lead
A CENTER TAP
(this is the center tap lead for
Phase A of the motor). Label the third motor lead
A–
. Label the motor lead
connected to the ohmmeter
A+.
7.
Repeat the procedure as outlined in step 6 for the three leads labeled
B
(
B CENTER TAP
is the center tap lead for Phase B of the motor).
8.
Proceed to the
Terminal Connections section below.
8-Lead Motor
Because of the complexity involved in phasing an 8-lead motor, you must refer to
the manufacturer’s motor specification document. Using the manufacturer’s
specifications, label the motor leads as shown in the next drawing.
