General Safety Precautions
IMGT30017EN - vii -
¾ GT3000 provides variable frequency control. Motors and loads must be capable of operation over the speed and power
range provided by the drive.
¾ Co-ordinate motor and drive voltage and current ratings. The rated voltage of the motor must be greater than 1/2 of the
input voltage, and the rated current of the motor must be greater than 1/3 of the output current of GT3000.
¾ Regardless of the output operating frequency, GT3000 produces a pulsed output voltage with a peak value of about 1.4
times the rated input AC voltage with very short rise times. The voltage of these pulses may almost double at the motor
terminals, depending on the cable properties. Make sure that output cables and motor insulation are designed to
withstand the additional stress.
¾ If isolation tests on the motor and cables must be performed, disconnect the cables from the drive first. Hi-potential tests
must not be performed on GT3000 components.
¾ Use caution not to damage any part of GT3000 while handling it.
¾ Protect the equipment from weather and incorrect environmental conditions (temperature, humidity, vibration, shock, etc.).
If drive must be temporarily stored outdoors, special precautions must be taken. (See Chapter 2A.2)
DO NOT
¾ operate the drive at voltages in excess of 10% of its maximum rated input
voltage.
¾ apply power to GT3000 output terminals.
¾ connect GT3000 drives in parallel directly on the output terminals
¾ connect capacitive loads to the GT3000 output terminals
¾ connect the drive input to the output (Bypass)
¾ If the drive has not been energized for a period of greater than two years it
is necessary to reform the electrolytic capacitors. Do this by energizing
GT3000 when not enabled (Drive Enable open) for a period of at least two
hours.
The drive contains components sensitive to electrostatic charges; such components may be damaged if incorrectly handled.
During replacement or maintenance of the electronic boards, the following steps must be adhered to:
¾ Use a maintenance kit for electrostatic charges. Electrostatic Discharge (ESD)
precautions must be taken:
¾ Wear properly grounded static straps.
¾ Handle PC boards by holding them by the edges.
¾ Boards must not come into contact with highly insulating materials, such as
plastic sheets, insulating surfaces, parts of synthetic fabrics.
¾ Boards must be placed only on conductive surfaces.
¾ Boards must be packaged in conductive sheets before shipping.
Equipment warranty and liability
Warranty Refer to Answer Drives S.r.l. Sales General Conditions
(attached to the order confirmation) for warranty conditions.
Liability Answer Drives S.r.l.. is not responsible neither for technical lack or mistake in this manual nor for
incidental damages consequential to the use of the information in this manual.
WARNING
WARNING
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