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3.1.2
Forced ventilation
This cooling method is achieved using a separate ventilation unit with a fan that is driven
independently of the motor. This fan has degree of protection IP54.
Risk of explosion when operated in hazardous environments
Operating the fan in an environment with inflammable, chemically corrosive, electrically
conductive, or explosive dust or gases can cause explosions and result in death or serious
injury.
• Operate the motor with forced ventilation only in an environment that is free of
Hair, clothing and other objects can be drawn in
For example, hair, neckties, loose objects can be sucked into the air intake and cause
death or serious injury.
• Take measures to prevent objects from being sucked in, e.g.
Note
Ensure that the motor is only operated when the separately driven fan is running.
Operate the fan only with normal ambient air.
Table 3- 2
Deposits of contaminated air can impair the heat dissipation of the motor or block the cooling
duct and overheat the motor.
● Position the motor so that the cooling air can freely flow in and out.
● Make sure that no heated discharged air is drawn in.
● Maintain the minimum clearance between the air intake and discharge openings and
adjacent components (see the "Minimum clearance" diagram).
● To remove the fan cover and connect the signal connector when the motor is installed,
maintain a minimum clearance of 125 mm.
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
WARNING
inflammable, chemically corrosive, electrically conductive, or explosive dust or gases.
WARNING
– Wear a head covering or hair net,
– Remove any neckties or similar,
– Keep the air intake area free.
Air flow direction of the forced ventilation
Motor
For 1FT706□ to 1FT7117
For 1FT713□
Mechanical properties
3.1 Cooling
Air flow direction
NDE --> DE
DE --> NDE
39
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