Inovance MD500T75G - Page 16

Safety Information and Precautions MD500 User Manual
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10. Prohibition of three-phase input changed into two-phase input
Do not change a three-phase input of the AC drive into a two-phase input.
11. Surge suppressor
The AC drive has a built-in voltage-dependent resistor (VDR) for suppressing the surge voltage generated when the inductive
loads around the AC drive (for example the electromagnetic contactor, electromagnetic relay, solenoid valve, electromagnetic
coil and electromagnetic brake) are switched on or off.
If the inductive loads generate a very high surge voltage, use a surge suppressor for the inductive load and possibly also use
a diode.
Note
Do not connect the surge suppressor to the output side of the AC Drive.
12. Some special usages
If your installation requires special cabling that this user manual does not describe, for example to support a common DC bus,
contact Inovance for technical support and advice.
13. Disposal
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do, the electrolytic capacitors might explode, and the plastic components will create poisonous gases. Treat any parts for
disposal as ordinary industrial waste.
14. Adaptable motor
ƕ The standard adaptable motor is an adaptable four-pole squirrelcage asynchronous induction motor. For other types of
motor, select the correct AC drive according to the rated motor current.
ƕ The cooling fan and rotor shaft of non-variable-frequency motors are coaxial, which results in reduced cooling effect
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applications where the motor overheats easily.
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necessary to perform motor auto-tuning or to modify the default values based on actual conditions. Otherwise, the
running result and protection performance will be adversely affected.
ƕ The AC drive might cause an alarm or might be damaged when a short-circuit exists on cables or inside the motor.
Therefore, perform insulation short-circuit test when the motor and cables are newly installed or during routine
maintenance. During the test, disconnect the drive from the tested parts.
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