Operating Precautions - Toshiba TOSVERT-130G2+ Operation Manual

2.1 Installation Precautions (cont'd)
14) If a secondary Magnetic Contactor (MC) is used between the inverter output
and the load, it should be interlocked so the ST-CC terminals are disconnected
before the output contactor is opened. If the output contactor is used for bypass
operation, it must also be interlocked so that commercial power is never applied
to the inverter output terminals (U,V,W).
2.2

Operating Precautions

1) Do not power up the inverter until this entire operation manual is reviewed.
2) The input voltage must be within +/-10% of the specified input voltage. Voltages
outside of this permissible tolerance range may cause internal protection
devices to turn on or can cause damage to the unit. Also, the input frequency
should be within +/-2 Hz of the specified input frequency.
3) Do not use this inverter with a motor whose rated input is greater than the rated
inverter output.
4) This inverter is designed to operate NEMA B motors. Consult the factory before
using the inverter for special applications such as an explosion proof motor or
one with a repetitive type piston load.
5) DANGER
remove the source power and check that the charge and power LED's are out.
A hazard exists temporarily for electrical shock even if the source power
is removed.
6)
7) Do not apply commercial power to the output terminals T1 (U), T2 (V), or T3 (W)
even if the inverter source power is off. Disconnect the inverter from the motor
before applying a test or bypass voltage to the motor.
8) Use caution when setting output frequency. Overspeeding of the motor can
cause serious damage to the motor and/or the driven load equipment.
9) Use caution when setting the acceleration and deceleration time. Unnecessarily
short times can cause undue stress and tripping of the drive.
10) The G2+ series of inverters can be operated in a special PWM high carrier
frequency mode for low acoustical noise. When operating in this special mode,
where the carrier frequency is greater than 3 KHz, special programming
procedures and operating precautions must be followed. Failure to follow
these special programming procedures and operating precautions may
result in damage to the inverter and can invalidate the factory warranty
(Contact Toshiba for additional operating and programming information).
11) Interface problems can occur when this inverter is used in conjunction with
some types of process controllers. Signal isolation may be required to
prevent controller and/or inverter damage (Contact Toshiba or the process
controller manufacturer for additional information about compatibility and
signal isolation).
CAUTION
CAUTION
Do not touch any internal part with
power applied to the inverter. First
Do not operate this unit with the cabinet door open.
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