Specifications

22 ζ ZETA6104 Installation Guide
Matching the Motor to the ZETA6104 (OPTIONAL)
Due to slight manufacturing variations, each motor has its own particular characteristics. In
the procedure below, you will adjust three potentiometers (pots), to match your ZETA6104 to
your specific motor. You will also select the best current waveform to use with your motor.
If you purchased a ZETA6104 system (ZETA6104 and Zeta motor together), the ZETA6104
and the Zeta motor were matched to each other at the factory. However, you may still want to
perform the matching procedure below, because your operating conditions may not be the
same as factory conditions.
The ZETA6104’s pots are located behind the removable metal cover on top of the chassis.
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Magnitude of Phase B with respect to Phase A
DC Offset of Phase A motor current
DC Offset of Phase B motor current
Phase B Offset
Phase A Offset
Phase Balance
Before You Start
• Note that if you replace the ZETA6104 unit or the motor, you will have to redo this procedure.
• Set up a serial communication link and terminal emulator (see installation test on page 20).
• Connect the motor to the ZETA6104.
• Secure the motor in a location such that you can turn the pots and feel or hear the motor at
the same time. (You should perform this procedure with the motor not coupled to the load,
because the characteristics you are matching are those only of the drive/motor combination.)
• Apply AC power when necessary to perform the steps below.
Step 1
Apply power to the ZETA6104, and allow it to reach a stable operating temperature. This
may take up to 30 minutes. For optimum results, perform the matching procedure at the
same ambient temperature at which your application will operate.
Step 2
For each of the adjustments that follow, consult the table below to find the speed at which to
run the motor. These are speeds that cause resonance in the unloaded motor. When the motor
is running at a resonant speed, you will notice increased noise and vibration. To make
resonance the most noticeable, you may need to vary the speed around the value given below
for your motor. You can find the resonant speed by touching the motor lightly with your
fingertips as you vary the speed. When you feel the strongest vibrations, the motor is running
at resonant speed.
Motor Offset Adjust (rps) Balance Adjust (rps) Waveform Adjust (rps)
ZETA57-51 .......... 4.72 ................ 2.36 ................. 1.18
ZETA57-83 .......... 4.66 ................ 2.33 ................. 1.17
ZETA57-102.......... 4.12 ................ 2.06 ................. 1.03
ZETA83-62 .......... 2.96 ................ 1.48 ................. 0.74
ZETA83-93 .......... 2.96 ................ 1.48 ................. 0.74
ZETA83-135.......... 2.89 ................ 1.45 ................. 0.73