16
Q9 ASD Quick Start Guide
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.
Contact the Toshiba 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
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