Bosch Rexroth IndraDrive HMV01.1E-W0030 Project Planning Manual page 39

Rexroth IndraDrive
Avoiding Condensation
DOK-INDRV*-HMV-*******-PR01-EN-P
correct
control cabinet
air inflow
air
duct
cooling
unit
electronic
equip.
Fig. 6-10: Arrangement of the cooling unit on the front of the control cabinet
Condensation occurs when the temperature of the unit is lower than the
ambient temperature.
• Set cooling units with temperature adjustment to the maximum
surrounding temperature and no lower.
• Set cooling units with traced temperature so that the interior
temperature of the control cabinet is no lower than the temperature of
the surrounding air. Set the temperature delimitation to the maximum
surrounding temperature.
• Only use well-sealed control cabinets so that condensation cannot
arise as a result of warm and moist external air entering the cabinet.
• In the event that control cabinets are operated with the doors open
(start-up, servicing etc.) it is essential to ensure that after the doors are
closed the drive controllers cannot at any time be cooler than the air in
the control cabinet, as otherwise condensation can occur. For this
reason ample circulation must be provided inside the control cabinet to
avoid pockets of heat.
Mechanical Mounting
incorrect
control cabinet
air inflow
air outflow
cooling
unit
electronic
equip.
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6-9