Delta Electronics VFD007CB23A-21M [19/20] Â elt2i

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Attention Standard Motors Environmental Conditions Peripheral Equipment Used with 400V Standard Motors Installation Position It is recommended to add an AC output reactor when using with a 400V standard motor to prevent damage to motor insulation The drive is suitable for installation in a place with ambient temperature from 10 to 50 C The surface temperature of the drive and brake resistor will rise under specific operation conditions Therefore please install the drive on materials that are noncombustible Ensure that the installation site complies with the ambient conditions as stated in the manual Molded Case Circuit Breakers MCCB Torque Characteristics and Temperature Rise When a standard motor is drive controlled the motor temperature will be higherthan with DOL operation Please reduce the motor output torque when operating at low speeds to compensate for less cooling efficiency For continuous constant torque at low speeds external forced motor cooling is recommended Wiring Limit of Wiring Distance When the motor drives the machine resonances may occur including machine resonances Abnormal vibration may occur when operating a 2 pole motor at 60Hz or higher For remote operation please use twist shielding cable and the distance between the drive and control box should be less than 20m Noise Maximum MotorCable Length When a standard motor is drive controlled the motor noise will be higherthan with DOL operation To lower the noise please increase the carrier frequency of the drive The motor fan can be very noisy when the motor speed exceeds 60Hz Motor cables that are too long may cause overheating of the drive or current peaks due to stray capacitance Please ensure that the motor cable is less than 30m if the cable length can t be reduced please lower the carrier frequency or use an AC reactor Special Motors Please refer to current value to choose the right cable section with enough capacity or use recommended cables Choose the Right Cable High speed Motor Grounding Please ground the drive completely by using the grounding terminal Explosion proof Motor Please use a motor and drive that comply with explosion proof requirements Submersible Motor Pump The rated current is higher than that of a standard motor Please check before operation and select the capacity of the AC motor drive carefully The motor temperature characteristics differ from a standard motor please set the motor thermal time constant to a lower value Brake Motor When the motor is equipped with a mechanical brake the brake should be powered by the mains supply Damage may occur when the brake is powered by the drive output Please DO NOT drive the motor with the brake engaged Synchronous Motor Add a Magnetic Contactor MC in the Input Circuit Please only switch theMCONCEperhourorit may damage the drive Please use RUN STOP signal to switch many times during motor operation Motor Protection The thermal protection function of the drive can be used to protect the motor by setting the operation level and motortype standard motor or variable motor When using a high speed motorora water cooled motor the thermal time constant should be set to a lower value When usingalonger cable to connect the motor thermal relay to a motor high frequency currents may enter via the stray capacitance It may result in malfunctioning of the relay as the real current is lower than the setting of thermal relay Under this condition please lower the carrier frequency or add an AC reactor to solve this DO NOT Use Capacitors to Improve the Power Factor How to Choose the Drive Capacity Standard Motor Please select the drive according to applicable motor rated current listed in the drive specification Please select the next higher power AC drive in case higher starting torque or quick acceleration deceleration is needed Special Motor Please select the drive according to Rated current of the drive rated current of the motor Gear Motor In gearboxes or reduction gears lubrication may be reduced if the motor is continuously operated at low speeds Please DO NOT operate in this way Add a Magnetic Contactor MC in the Output Circuit WhenaMCis installed in the output circuit of the drive to switch the motor to commercial power or other purposes please make sure that the drive and motor are completely stopped and remove the surge absorbers from the MC before switching it Vibration To ensure safety please try the frequency setting with another motor before operating the high speed motorat 120Hzorhigher Please install the recommended MCCB or ELCB in the main circuit of the drive and make sure that the capacity of the breaker is equal to or lower than the recommended one Transportation and Storage Please transport and store the drive in a place that meets environment specifications Use a DC reactor to improve the power factor of the drive Please DO NOT install power factor correction capacitors on the main circuit of the drive to prevent motor faults due to over current Do NOT Use Surge Absorber Please DO NOT install surge absorbers on the output circuit of the drive Lower the Noise To ensure compliance with EMC regulations usually a filter and shielded wiring is used to lower the noise Method Used to Reduce the Surge Current Surge currents may occur in the phase lead capacitor of the power system causing an overvoltage when the drive is stopped or at low loads It is recommended to add a DC reactor to the drive These motors need suitable software to ontrol them Please contact Delta for more information Single phase Motor Single phase motors are not suitable for being operated by an AC Motor Drive Please use a 3 phase motor instead when necessary 18 Â ELT2I

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