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AMD5x Passive Infeed Unit and AMD5x Servo Drive - User Guide
ANCA MOTION
D-000129 Rev 09
38
Heatsink Cooling with External Cabinet Air Using Duct Mount Fitment
4.3.4
The AMD5x PIU and Drives utilise a duct mounting system where the heatsinks project though the gear tray cut-
outs into a cooling duct which can be supplied with air external to the cabinet (see
and
The cool air is drawn from the fan entry and then passed over the PIU and Drive heatsinks. This
allows heat from the heatsinks to be separated from the main cabinet enclosure,
thus reducing cabinet cooling
requirements and cabinet pollution.
As per table
, heatsink losses are the major power losses from the PIU and Drives,
and it is preferable to dissipate this heat into the external environment and not into the cabinet enclosure.
Figure 4-1: AMD5x system with external cabinet air supplying cooling duct
Figure 4-2: AMD5x cooling duct and gear tray with external cabinet air supplying cooling duct
Heatsink Cooling with Internal Cabinet Air Using Duct Mount Fitment
4.3.5
The duct mounted AMD5x PIU and Drives MUST use a duct (air tunnel) which can be installed in a cabinet where
the cooling duct air is supplied from internal cabinet air (see
4-3). The cool air is drawn from the fan entry and then passed over the PIU and Drive heatsinks and
heated air is recirculated back into the cabinet, which is cooled by an air-conditioner or similar active heat