Cautions For Operation - Chziri ZVF200-M User Manual

Inverter Inverter
Figure 1-1
DO NOT connect control terminals (except termina ls marked
"TA", "TB"and "TC") to AC 220V power supply, which may
cause damage to the inverter.
DO NOT connect AC power supply to the output terminals
FORBIDDEN
marked "U", "V"and "W". Otherwise, i t may c ause damag e
to the inverter, as shown in theFigure 1-2.
Three-phase
AC
Power Supply
Figure 1-2
DO install a no-fuse circuit breaker or leakage protective
circuitbreaker in the side of inverter input power supply to
COMPULSORY prevent expanding of accident due to an inverter problem.
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Chapter 1 Safety Instruction
Proper
Inverter
grounding
method
Grounding with bus bar
(Connect to the ground at the same point)
FORBIDDEN
INVERTER
It is not advisable to install an electromagnetic contactor in the
side of output power supply, because the operation of open and
close to the contactor when the motor is runn ing may cause
damage to the inverter arising from over-voltage produced during
this process. But it is still necessary to install a contactor if ther e
have one situation of the following three points:
1. The system of frequency inverter used to control energy saving
usually works at a rated rotation speed. To run the inverter
economically, there is a must to remove the inverter.
CAUTION 2. The inverter participates in some important procedure and cannot
stop operating for a long period of time. To realize free shift in
various control systems and improve the reliability of these
systems, there is a must to install a contactor.
3. When an inverter controls several motors, there is a must to in
stall a contactor.
Caution: DO NOT operate the contactor if there is output of the
inverter.

1.5 Cautions for Operation

Do not operate electrical equipment with wet hands.
An inverter stored fo r a year or longer should be given power up
test before use so that the main circuit filter capacitor could be
recovered.When the inverter is in the state of power up,it is
necessary to raise the voltage gradually to the rated value wit h
a voltage regulator. Generally, the charging time should be
controlled within 1~2 hours. Otherwise, there is the danger of
electric shock or exposure.
Do not touch the inner side of the inverter while the power is
HAZARD
ON, or put any foreign matter, i.e., rod or other matter inside
the inverter. Otherwise, it may result in serious damage to the
equipment or death to personnel.
Do not open the front cover while the inverter is powered ON.
Otherwise, there is the danger of electric shock.
Be careful to select the Restart Mode. Otherwise, there is the
danger of personnel death.
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Chapter 1 Safety Instruction