Specifications

44 ζ ZETA6104 Installation Guide
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. You can configure the 8-lead motor in parallel
or series. Using the manufacturer's specifications, label the motor leads as shown in the next
drawing.
PM
Phase A Windings
Phase B Windings
1
2
3
4
21 43
Series Configuration Procedure:
1. Connect A2 & A3 together and relabel this common point A CENTER TAP.
2. Connect B2 & B3 together and relabel this common point B CENTER TAP.
3. Relabel the A1 lead A+.
4. Relabel the A4 lead A-.
5. Relabel the B1 lead B+.
6. Relabel the B4 lead B-.
7. Proceed to the Terminal Connections section below.
Parallel Configuration Procedure:
1. Connect motor leads A1 & A3 together and relabel this common point A+.
2. Connect motor leads A2 & A4 together and relabel this common point A–.
3. Connect motor leads B1 & B3 together and relabel this common point B+.
4. Connect motor leads B2 & B4 together and relabel this common point B–.
5. Proceed to the Terminal Connections section below.