Mounting The Asd - Toshiba ACE-tronics G9 ASD Installation And Operation Manual

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
your ACE World Companies 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.
Not all ACE-tronics G9 ASDs are equipped with internal primary power input fuses (typeform-
dependent). When connecting two or more drives that have no internal fuse to the same power line as
shown in Figure 1, it will be necessary to select a circuit-breaking configuration that will ensure that if a
short circuit occurs in ASD 1, only MCCB2 trips, not MCCB1. If it is not feasible to use this
configuration, insert a fuse between MCCB2 and ASD 1.
Figure 1. Circuit Breaker Configuration.

Mounting the ASD

CAUTION
— The following thermal specifications apply to the 230- and the 460-Volt ASDs ONLY —
Install the unit securely in a well ventilated area that is out of direct sunlight.
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. If installing the ASD in a
cabinet, ensure that there is adequate ventilation.
DO NOT operate the ASD with the enclosure door open.
The ambient operating temperature rating of the ACE-tronics G9 ASD is 14° to 104° F (-10° to 40° C).
When installing adjacent ASDs horizontally ACE World Companies recommends at least 5 cm of space
between adjacent units. However, horizontally mounted ASDs may be installed side-by-side with no
space between the adjacent units — side-by-side installations require that the top cover be removed
from each ASD.
For 150 HP ASDs and above, a minimum of 50 cm of space is required above and below adjacent units
and any obstruction. This space is the recommended minimum space requirement for the ASD and
ensures that adequate ventilation is provided for each unit. More space will provide a better
environment for cooling (see the section titled Enclosure Dimensions and Conduit Plate Information on
pg. 261 for additional information on mounting space requirements).
Note: Ensure that the ventilation openings are not obstructed.
ACE-tronics G9 ASD Installation and Operation Manual 15
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