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6.4 Installation
Caution: Mount the units, allowin
for sufficient clearance of at least 300 mm above
and below the frequency inverter and 100 mm on both sides of the unit.
• For fixing the frequency inverter, drill 6 threaded holes M6 in the installation sur-
face. For the installation dimensions, refer to the above illustrations.
• Clean the contact surfaces of the cold plate and the heat sink.
• Apply a thin and uniform film of heat conducting paste on the cold plate.
Note: The heat conducting paste compensates the roughness of the contact sur-
faces and thus the heat transmission resistance between the cold plate and
the heat sink. In this way, the cooling efficiency is increased.
• Mount the frequency inverter vertically on the heat sink usin
6 M6 bolts. The bolts
must have a minimum length of 20 mm. Tighten all bolts uniformly.
Note: The maximum tightening torque of the fixing bolts in a typical construction
is 3.4 Nm.
After the mechanical installation continue with the electrical installation accordin
to
the instructions. Comply with the safety instructions provided there.
7 Temperature Monitoring
The operation of the frequency inverter and the connected load is continuously moni-
tored. The monitorin
functions as well as the correspondin
limit values are to be
parameterized depending on the specific application. If the limits are set below the
switch-off limit of the frequency inverter, a warnin
messa
e can be tri
ered and,
provided that appropriate measures are taken, an error switch-off can be avoided.
After commissioning of the frequency inverter, the thermal operatin
conditions of the
frequency inverter can be monitored:
-
he heat sink temperature and the interior temperature can be displayed in the
actual value menu. For detailed information, refer to the operatin
instructions,
chapter "Actual values of the frequency inverter".
-
Alarm limits can be set up in order to trigger alarms indicating a temperature in-
crease of the heat sink or the control cabinet interior and in order to avoid an erro
switch-off of the frequency inverter.
By default, these two limits are set to -5 °C. This means that an alarm is tri
ered
if the maximum heat sink or interior temperature minus 5 °C is reached. For de-
tailed information, refer to the operating instructions, chapter "Temperature".
-
When the maximum heat sink temperature or the maximum interior temperature
(minus the alarm limit) is reached, an alarm messa
e is tri
ered. The red LED
flashes and the messa
e "WARN" is displayed in the control unit. The warnin
message can be output via a digital control output. For detailed information, refe
to the operatin
instructions, chapters "Error and warnin
behavior" and "Warnin
status".
Note: The switch-off limits of the frequency inverter are 80 °C for the heat sin
temperature and 65 °C for the interior temperature.
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