20 H9 ASD Installation and Operation Manual
Lead Length Specifications
Adhere to the NEC and any local codes during the installation of ASD/motor systems. Excessive lead
lengths may adversely effect the performance of the motor. Special cables are not required. Lead lengths
from the ASD to the motor in excess of those listed in Table 1 may require filters to be added to the output
of the ASD. Table 1 lists the suggested maximum lead lengths for the listed motor voltages.
Note: Contact the TIC Customer Support Center for application assistance when using lead
lengths in excess of those listed.
Exceeding the peak voltage rating or the allowable thermal rise time of the motor
insulation will reduce the life expectancy of the motor.
When operating in the Vector Control mode the carrier frequency should be set to
2.2 kHz or above.
Table 1. Lead Length Recommendations.
Model
PWM Carrier
Frequency
NEMA MG1 Part 31
Compliant Motors
NEMA MG1 Part 30
Compliant Motors
230-Volt All 1000 feet 450 feet
460-Volt
< 5 kHz 600 feet 200 feet
5 kHz 300 feet 100 feet
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
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