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Precautions for the use of an inverter to operate the blower. 

1)   The standard motor may not be used for the operation in some cases as shown below. 

    ・

  In the case of no margin for temperature rise in the motor 

2)  At factory shipment, the setting of a commercial inverter is not suitable for the blower. 

 

  Change the following values at least. 

    ・

Base frequency: Adjust to the rated frequency of the blower (50 Hz or 60 Hz). 

    ・

Highest frequency: Adjust to the rated frequency of the blower. 

    ・

Maximum output voltage: Adjust to the rated voltage of the motor. 

    ・

Upper-limit frequency: Highest frequency: Adjust to the rated frequency of the blower. 

    ・

Lower-limit frequency: 25 to 30 Hz (based on the cooling characteristics of the motor). 

    ・

V/f characteristics: Change to square reduction torque. 

    ・

Acceleration time: 30 to 60 sec. or more If the acceleration time is short, an over-current error   

may occur. 

    ・

Deceleration time: 30 to 60 sec. or more If the decceleration time is short, a regenerative current   

error may occur. 

3

) 

Other precautions 

    ・

  Vibrations of components (belt, casing, etc.) making up the blower may increase at a specific   

frequency. If the increase in vibration cannot be eliminated even after other set values are   
changed, a resonance point may be causing it. In such a case, set the jump frequency to   
prevent the increase in frequency. 

    ・

If the blower is installed on a vibration isolation table (rubber, spring, etc.), a decrease in   

frequency may become a resonance frequency. In such a case, set the jump frequency to prevent   
this symptom (otherwise, the blower and motor are individually affected). 

    ・

If the carrier frequency is set higher, current leakage may increase, and the earth leakage   

breaker may be activated. 

    ・

Do not use the inverter output power for applications other than electric motors. 

 
For details, see “Use of inverter (frequency converter)” on page 20. 

Содержание KAIRYU

Страница 1: ...MAA4060 Y004E Fan Instruction Manual Axial fan with adjustable at rest blades KAIRYU smooth flow Instruction manual for motor direct drive type...

Страница 2: ...rence Applicable types for this instruction manual This manual provides instructions on how to set up and use the following fan types Fan type KAIRYU series Axial fan with adjustable at rest blades Fa...

Страница 3: ...pon receipt and product verification 8 3 2 Movement transportation 8 3 3 Storage until installation 8 4 Installation 8 4 1 Mounting 8 4 2 Connection to ducts 9 4 3 Electrical wiring 10 4 4 Test operat...

Страница 4: ...e of this do not place your face close to the outlet When hanging be sure to use the holes labeled Hang here Hanging by other parts may result in deformation of the fan or cause an accident by tipping...

Страница 5: ...If this occurs avoid operation at those frequencies Shipment inspection of the fan is performed only at the rated rotation speed Operation at other speeds frequencies is not guaranteed Operation testi...

Страница 6: ...acceleration time is short an over current error may occur Deceleration time 30 to 60 sec or more If the decceleration time is short a regenerative current error may occur 3 Other precautions Vibratio...

Страница 7: ...formance number Blade angle number Voltage V Frequency Hz Indication types contents A Axial fan 1 Low noise type low speed specifications D Motor direct drive type 3 300 A 0 4 1 Large Air volume Small...

Страница 8: ...A or AC4C 5 Impeller hub FC200 6 Casing SS400 SPHC 7 Motor 8 Terminal box When using a flange mounted motor When using a foot mounted motor Note The diagram is an example and shows typical part shapes...

Страница 9: ...for lifting For safety the fan should be lifted by at least 2 labeled hangers except for products with only 1 hanger Lifting should be performed by licensed personnel only 3 3 Storage until installati...

Страница 10: ...ition vertical mounting of fans with foot mounted motors is not correct If the fan will be mounted in a high location and especially frequent inspection or repairs are expected lifting equipment shoul...

Страница 11: ...er to the motor instruction manual Be sure to wire the fan properly so that the rotation direction is correct For details refer to section 4 4 4 4 Test operation Before performing test operation be su...

Страница 12: ...are recorded abnormalities can be detected early to prevent problems 1 Check for vibration or abnormal sound once every three months and inspect the insulation once a year Inspect the motor while ref...

Страница 13: ...of 6mm s Possible causes of vibrations Unbalance of impeller due to dust adhesion Deformation damage of impeller or casing Abnormality of motor shaft or bearings Looseness due to loose bolt Stall oper...

Страница 14: ...actors such as salt damage and public pollution abnormal voltage use of a power supply voltage or frequency other than that specified or the like Failure or damage due to repair or modification includ...

Страница 15: ...of oil Replacement or recycling Inappropriate material Replacement Unbalanced impeller Correction Deformation or damage of impeller Repair or replacement Wear or corrosion of impeller Repair or repla...

Страница 16: ...n information that you may need when making an inquiry of us Model Serial No Purchased on Date Starting day Date Distribution agent TEL In charge SHOWA DENKI CO LTD 1 25 Shinden Kita machi Daito City...

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