Motors with class d/e protection
The motor itself has an e ignition protection class, while the motor cabling and connection environment is in compliance with the d
classification. To attenuate the high peak voltage, use a sine-wave filter at the drive output.
NOTICE
MOTOR THERMISTOR SENSOR MONITORING
VLT
®
AutomationDrive units with the VLT® PTC Thermistor Card MCB 112 option are PTB-certified for potentially explosive
atmospheres.
4.6 Installation Requirements
NOTICE
OVERHEATING
Improper mounting can result in overheating and reduced performance.
-
Install the drive according to the installation and cooling requirements.
• Locate the unit as near to the motor as possible. For the maximum motor cable length, see 10.5 Control Cables.
• Ensure unit stability by mounting the unit to a solid surface.
• Ensure that the strength of the mounting location supports the unit weight.
• Ensure that there is enough space around the unit for proper cooling. Refer to
10.10 Enclosure Airflow.
• Ensure enough access to open the door.
• Ensure cable entry from the bottom.
4.7 Cooling Requirements
NOTICE
OVERHEATING
Improper mounting can result in overheating and reduced performance.
-
Install the drive following the installation and cooling requirements.
• Ensure that top and bottom clearance for air cooling is provided. Clearance requirement: 225 mm (9 in).
• Provide sufficient airflow flow rate. See 4.8 Airflow Rates.
• Consider derating for temperatures starting between 45 °C (113 °F) and 50 °C (122 °F) and elevation 1000 m (3300 ft) above sea
level. See the product-specific design guide for detailed information.
The enclosed drive, excluding the input power options cabinet, utilizes a back-channel cooling concept that removes the air used to
cool the heat sink. The heat sink cooling air carries approximately 90% of the heat out of the back channel of the drive. A back-channel
cooling option allows the cooling air to be brought into and vented out of the room where the drive is installed.
Mechanical Installation
Operating Guide | VLT® AQUA Drive FC 202
AQ262141056213en-000101 / 130R0882
34 | Danfoss A/S © 2018.10
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