Toshiba GX7R ASD, Quick Start Manual

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GX7R ASD Quick Start Guide 11
only after normal system power is available. The MS1 AUX relay circuit prohibits the ST -to- CC
connection in the event that the MS1 contactor fails to close during start up or if MS1 opens while the
ASD is running.
The ASD input voltage should remain within 10% of the specified input voltage. The frequency of the
input power should be ±2 Hz of the specified input frequency.
The ASD is designed to operate NEMA B motors. Consult with the Toshiba Customer Support Center
before using the ASD for special applications such as with an explosion-proof motor or applications
with a piston load.
Interface problems may occur when an ASD is used in conjunction with some types of process
controllers. Signal isolation may be required to prevent controller and/or ASD malfunction (contact the
Toshiba Customer Support Center or the process controller manufacturer for additional information
about compatibility and signal isolation).
Use caution when setting the output frequency. Over speeding a motor decreases its ability to deliver
torque and may result in damage to the motor and/or the driven equipment.
All GX7R ASDs are equipped with internal DC bus fuses. In the event that a DC bus fuse opens, the
Bus Fuse Open Indicator LED of the Gate Driver board turns on (see Figure 1. on pg 12 ).
All GX7R ASDs are equipped with semiconductor fuses and a breaker.
Installing the ASD
Install the unit securely to the floor in a well ventilated area.
The process of converting AC to DC, and then back to AC produces heat. During normal ASD
operation, up to 5% of the input energy to the ASD may be dissipated as heat.
Do Not operate the ASD with the enclosure door open or with any enclosure panels removed.
When performing maintenance DO NOT insert fingers into the holes of the enclosure.
Note: Ensure that the ventilation openings are not obstructed.
See pg. 15 for system conductor routing applicables.
CAUTION