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.
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| Table 1. | |
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Model | PWM Carrier | NEMA | |
Frequency | Compliant Motors2 | ||
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230 Volt | All | 1000 feet | |
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460 Volt | < 5 kHz | 600 feet | |
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≥ 5 kHz | 300 feet | ||
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Note: Contact Toshiba 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.
20 | H9 ASD Installation and Operation Manual |