Installation; Temperature Monitoring - BONFIGLIOLI active Installation Manual

6.4
Caution: Mount the units, allowing for sufficient clearance of at least 300 mm above
• 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:
• Mount the frequency inverter vertically on the heat sink using 6 M6 bolts. The bolts
must have a minimum length of 20 mm. Tighten all bolts uniformly.
Note:
After the mechanical installation continue with the electrical installation according 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 monitoring functions as well as the corresponding 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 warning message can be triggered and,
provided that appropriate measures are taken, an error switch-off can be avoided.
After commissioning of the frequency inverter, the thermal operating conditions of the
frequency inverter can be monitored:
The heat sink temperature and the interior temperature can be displayed in the
-
actual value menu. For detailed information, refer to the operating 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 error
switch-off of the frequency inverter.
By default, these two limits are set to -5 °C. This means that an alarm is triggered
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 message is triggered. The red LED
flashes and the message "WARN" is displayed in the control unit. The warning
message can be output via a digital control output. For detailed information, refer
to the operating instructions, chapters "Error and warning behavior" and "Warning
status".
Note:
18

Installation

and below the frequency inverter and 100 mm on both sides of the unit.
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.
The maximum tightening torque of the fixing bolts in a typical construction
is 3.4 Nm.
The switch-off limits of the frequency inverter are 80 °C for the heat sink
temperature and 65 °C for the interior temperature.
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