P9 ASD Installation and Operation Manual
15
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 P9 ASDs are equipped with internal primary power input fuses (HP dependent). When
connecting two or more ASDs that have no internal fuse to the same power line as shown in
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.
Mounting the ASD
— The following thermal specifications apply to the 230-volt and 460-volt ASDs ONLY —
Install the unit securely in a well-ventilated area that is out of direct sunlight.
The ambient operating temperature rating of the P9 ASD is 14° to 104° F (-10° to 40° C).
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 or with any enclosure panels removed.
When installing multiple ASDs horizontally, TIC recommends at least 5 cm of space between adjacent
units. However, horizontally mounted ASDs may be installed side-by-side with no space in between the
adjacent units if the top cover is removed from each ASD.
For 150 HP and above ASDs, 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 and Conduit Plate Dimensions on pg. 268
for
additional information on mounting space requirements).
Note:
Ensure that the ventilation openings are not obstructed.
Figure 1. Typical Circuit Breaker Configuration.
CAUTION
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