
B-65382EN/02 CONFIGURATIONS AND SELECTION 2.SELECTION METHODS
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2.4 EXTERNAL COOLING UNIT SELECTION
2.4.1 Overview
To forcibly cool a linear motor, an external cooling unit is required. It
is desirable to use a chiller (cooler) for water cooling or industrial dry
air for air cooling. The cooling unit to be used must satisfy the
"cooling conditions" listed in Section 2.2, "SPECIFICATION LIST,"
in Part I, "SPECIFICATIONS." If it is absolutely necessary to use
another cooling medium such as oil, note that the rated continuous
force may be reduced by several percent to several tens of percent due
to the difference in characteristics between coolants.
For water cooling, it is desirable to use a chiller (cooler) which keeps
the room temperature when the ambient temperature of the motor is
not high. If a coolant temperature lower than the motor ambient
temperature is set, condensation may occur on the motor depending on
the ambient condition, resulting in degraded insulation of the motor.
For this reason, when selecting a chiller of which coolant temperature
is fixed, carefully manage the coolant temperature so that no
condensation occurs.
NOTE
If any cooling condition listed in Part I,
"SPECIFICATIONS," is not satisfied, the motor
output specifications are not guaranteed.
CAUTION
If condensation occurs on the motor due to
excessive cooling or high humidity, immediately
change the coolant temperature and take other
measures against condensation. In an environment
which keeps condensation for a long time,
insulation of the motor may tend to be degraded,
resulting in considerable reduction of the life of the
motor.