Teral VKN-e Series, Инструкция по эксплуатации

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Refer to the “Starting electric current” and “Rated electric current” specified in “2.5. Specification
table [page 2-4].” If you have any questions, contact Teral.
Note
When you switch from an IE1 motor-equipped product, it is necessary to
verify the applicability of its protection device on the primary side of the
pump.
Otherwise, the protective device may be tripped on startup.
(3) Securely connect to the power by wiring the terminals
according to the right figure (standard voltage product).
* If there are four or more terminals, follow the connection
nameplate in the terminal box.
(4) Be sure to attach a ground wire to prevent an electric
shock.
Connect the ground wire to the ground terminal inside the
terminal box of the motor.
Warning
Connecting a ground wire to a gas pipe or water
pipe is illegal and extremely dangerous.
(5) To prevent the terminal block of the motor from being pulled, fasten the power cable to the
terminal box with the cable lock.
(6) The position of the terminal box relative to the discharge port can be changed in steps of 90
degrees by rearranging the frame of the motor. For how to rearrange the frame of the motor,
contact Teral.
(7) By rearranging the frame of the motor, you can change the external wiring hole of the terminal box
in steps of 90 degrees (top, bottom, left, or right position). Note that, if you set the external wiring
hole to the top, left, or right position, take adequate dust-proofing and drip-proofing measures
using a connector, gland, or other means to prevent cutting powder and liquid from entering the
terminal box.
(8) To prevent overload and burnout of the motor, it is recommended to use a thermal relay for motor
protection. For the recommended preset current, refer to the rated current shown in “2.5.
Specification table [page 2-4].”
(9) Take adequate dust-proofing and drip-proofing measures using a connector, gland, or other
means to prevent any cutting powder and liquid coolant from entering the terminal box through
the external wiring hole.
(10) Pass the power cable through a metal tube or a metal conduit for shielding, and connect a ground
wire to the outer surface of the tube.
(11) Limit the fluctuations of the supply voltage within ±10% of the rated voltage, and also limit the
fluctuations of the frequency between –5% and +3% of the rated value. Although you can run the
pump in these ranges, avoid continuous operation if the voltage is not within ±5% of the rated
value or if the frequency is not within ±2% of the rated value. Otherwise, it may overload the pump,
thus leading to motor damage or a fire.
Even if the power fluctuations fall within the allowable ranges, the pump characteristics, motor
characteristics, and the temperature rise of the motor may differ from those at the rated voltage
and frequency.
(12) Precautions for using the inverter drive
• Ensure that the electric current during operation does not exceed 90% of the rated value.
• Ensure that the minimum frequency is set to 20Hz.
(Contact us if you need to run the drive at 20Hz or lower.)
• Contact us when using a 400V class model. Protective measures may be required against
inverter surge.
• An inverter-driven motor generates a magnetic sound which may be annoying compared with
the drives using commercial power supply. Although this magnetic sound does not cause an
adverse effect on the quality of the motor, some inverters allow the user to adjust the tone by
changing the carrier frequency. However, changing the frequency may reduce the allowable
電動機端子
M4
電源端子
M4
アース端子
M5
端子箱内配置図
Power terminal
M4
Ground terminal M5
Motor terminal
M4
Layout in the terminal box
(Standard voltage product)