Parker Gemini GV6K Series, Руководство по установке оборудования

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Appendix B – Non-Compumotor Motors
97
Setting Motor Current: GT6K with Non-Compumotor Motor
To set motor current for a non-Compumotor motor, refer to the formulas below
that correspond to your motor (4-lead, 6-lead, 8-lead) and use the DMTIC com-
mand to set the motor’s current.
NOTE : GT6K drive specifications for output current are in amps peak . Most
motor current specifications are in amps rms . The DMTIC command uses amps
rms; do not use amps peak with the DMTIC command .
WARNING
Do not connect or disconnect the motor with the power on. Doing so will damage
the contacts of the motor connector and may cause personal injury.
4-Lead Motors
If you use a 4-lead motor, the manufacturer’s current specification will translate
directly to the value you should enter with the DMTIC command.
6-Lead Motors
Manufacturers generally use either a bipolar rating or a unipolar rating for motor
current in 6-lead motors.
Bipolar Rating: If the manufacturer specifies the motor current as a bipolar
rating, you can use the DMTIC command directly to set motor current—no
conversion is required.
Unipolar Rating: If the manufacturer specifies motor current as a unipolar rating:
• Use the next formula to convert unipolar current rating to the correct bipolar rating:
Unipolar Current
∗
0.707 = Bipolar Current
• Use the converted value and the DMTIC command to set the motor current.
8-Lead Motors
Manufacturers generally use either a bipolar rating or a unipolar rating for motor
current in 8-lead motors.
Bipolar Rating: If the manufacturer specifies the motor current as a bipolar series
rating:
• If you wire the motor in series , use the DMTIC command directly.
• If you wire the motor in parallel , you must double the manufacturer’s rating and
then use the DMTIC command to set the motor current.
Unipolar Rating: If the manufacturer specifies motor current as a unipolar rating:
• Use the next formula to convert unipolar current rating to the correct bipolar rating:
Unipolar Current
∗
0.707 = Bipolar Current
• If you wire the motor in series , use the converted value and the DMTIC command
to set the motor current.
• If you wire the motor in parallel , you must double the converted value and use the
DMTIC command to set the motor current.
If you have questions about setting motor current, call Compumotor’s Applica-
tions Engineering Department at the number listed inside the front cover of this
user guide.