1. Safety Information and Precautions
EM15 User’s Manual
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inverter will be damaged.
1.2.10 Surge suppressor
The frequency inverter has a built-in voltage sensitive resistor for suppressing the surge voltage. Using frequently
surge place, please add extra surge voltage protection device at input side of frequency inverter.
Note:
Do not add the surge suppressor at the output side of the frequency inverter.
1.2.11 Altitude and de-rating using
Where the altitude is above 1000 m and the cooling effect WEAKEN due to thin air, it is necessary to de-rate the
power of frequency inverter. Please contact our company for technical supporting.
1.2.12 Some special application
If wiring that is not described in this manual such as shared DC bus is applied, please contact the agent or our
company for technical supporting.
1.2.13 Scrap disposition
The electrolytic capacitors on the main circuit and PCB board may explode when they are burning. Poisonous gas
is generated when the plastic parts are burning. Please treat them as industrial waste by special way.
1.2.14 Matched Motor
The standard matched motor is suitable four-pole squirrel-cage asynchronous induction motor. For other types of
motor, please select a proper frequency inverter according to the rated motor current. If user uses inverter for
permanent magnet synchronous motor, please contact my company for selecting another series inverter..
The cooling fan is coaxial to rotor shaft of non-variable-frequency motor, which will reduce cooling effect when
the shaft rotational speed decreasing. If motor is required variable speed, add a separately cooling fan or replace
motor to variable-frequency motor.
The common standard parameters of the matched motor have been configured inside the frequency inverter. It is
still necessary to perform motor auto-tuning or modify the default values based on actual application. Otherwise,
the running result and protection performance will be weaken.
The frequency inverter may alarm and even be damaged when short-circuit exists on cables or inside the motor.
Therefore, perform insulation test when the motor and cables are newly installed or during routine maintenance.
During the test, make sure the frequency inverter is disconnected from the tested parts.