5-4
Planning the cabinet
DKR Drive Controllers
DOK-DIAX03-DKR********-PR02-EN-P
Possible cooling method variants
The design of the devices offers several possibilities to cool the drive
controller:
•
with air from inside the cabinet
•
with air from outside the cabinet
•
duct cooling
Note:
The details on how to adapt the various cooling methods are
outlined in section 10.1.
If the drive controller is cooled with air from inside the cabinet, then the air
flow is pulled in and blown out inside the cabinet. The entire loss of
energy remains within the cabinet. The cabinet protection category is not
affected by this cooling method.
If the drive controller is cooled with air from outside the cabinet, then the
air is pulled in and blown out via vents in the back wall of the cabinet. This
cooling method conducts approximately 2/3 of total energy dissipation to
outside of the cabinet.
CAUTION
Damage to the drive controller by intake of
polluted air outside the control cabinet!
⇒
The intake for the air outside the control cabinet
mustn’t be situated near the machining room, in
order to rule out that the fan takes in metal dust
and/or cooling agent.
If there should be any doubt in this respect, then
cooling with air from inside the cabinet is
recommended.
CAUTION
Overheating of the drive controller caused by
dirty air inlet or heatsink!
⇒
Use appropriate filters in the air inlet.
CAUTION
Overheating of the drive controller caused by
insufficient air inlet and outlet!
⇒
Make sure the dimensions of the air inlets are large
enough.
⇒
For duct cooling please remember: keep the ducts
as short as possible and do not use more than two
90° bends per duct.
⇒
Control the values of the cooling air flow Q and the
maximum admissible overpressure p
max
! You will find
the admissible limit values in Fig. 5-2.
Cooling with air from inside the
cabinet
Cooling with air from outside the
cabinet
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
