Mitsubishi Electric 800 Series Installation Manualline page 3

This section is specifically about safety matters
Do not attempt to install, operate, maintain or inspect the inverter until you have read through this Installation Guideline and appended
documents carefully and can use the equipment correctly. Do not use the inverter until you have a full knowledge of the equipment, safety
information and instructions.
Installation, operation, maintenance and inspection must be performed by qualified personnel. Here, qualified personnel means personnel who
meets all the conditions below.
l A person who took a proper engineering training. Please note if you can take a proper engineering training at your local Mitsubishi Electric office.
Such training may be available at your local Mitsubishi Electric office. Contact your local sales office for schedules and locations.
l A person who can access operating manuals for the protective devices (e.g. light curtain) connected to the safety control system.
A person who has read and familiarized himself/herself with the manuals.
In this Installation Guideline, the safety instruction levels are classified into "WARNING" and "CAUTION".
WARNING Assumes that incorrect handling may cause hazardous conditions, resulting in death or severe injury.
Assumes that incorrect handling may cause hazardous conditions, resulting in medium or slight injury, or may cause
CAUTION
physical damage only.
Note that even the
CAUTION
levels because they are important to personnel safety.
Electric Shock Prevention
l While power is on or when the inverter is running, do not open the front cover. Otherwise you may get an electric shock.
l Do not run the inverter with the front cover removed. Otherwise, you may access the exposed high-voltage terminals or the charging part of the
circuitry and get an electric shock.
l Even if power is off, do not remove the front cover except for wiring or periodic inspection.You may access the charged inverter circuits and get an
electric shock.
l Before starting wiring or inspection, check to make sure that the LCD indication of the operation panel indicator is off, wait for at least 10 minutes
after the power supply has been switched off, and check that there are no residual voltage using a tester or the like. The capacitor is charged with
high voltage for some time after power off and it is dangerous.
l This inverter must be earthed (grounded). Earthing (grounding) must conform to the requirements of national and local safety regulations and
electrical codes (NEC section 250, IEC 61140 class 1 and other applicable standards). A neutral-point earthed (grounded) power supply for 400V
class inverter in compliance with EN standard must be used.
l Any person who is involved in the wiring or inspection of this equipment should be fully competent to do the work.
l Always install the inverter before wiring. Otherwise, you may get an electric shock or be injured.
l Do not subject the cables to scratches, excessive stress, heavy loads or pinching. Otherwise you may get an electric shock.
l Do not replace the cooling fan while power is on. It is dangerous to replace the cooling fan while power is on.
l
t touch the printed circuit board or handle the cables with wet hands. You may get an electric shock.
Do no
l When measuring the main circuit capacitor capacity, the DC voltage is applied to the motor for 1s at powering OFF. Never touch the motor
terminal, etc. right after powering OFF to prevent an electric shock.
l A PM motor is a synchronous motor with high-performance magnets embedded in the rotor. Motor terminals holds high-voltage while the motor
is running even after the inverter power is turned OFF. Before wiring or inspection, the motor must be confirmed to be stopped. In an application,
such as fan and blower, where the motor is driven by the load, a low-voltage manual motor starter must be connected at the inverter's output side,
and wiring and inspection must be performed while the motor starter is open. Otherwise you may get an electric shock.
Fire Prevention
l Mount the inverter to incombustible material. Install the inverter on a nonflammable wall without holes (so that nobody can touch the
inverter heatsink on the rear side, etc.). Mounting it to or near combustible material can cause a fire.
l If the inverter has become faulty, switch off the inverter power. A continuous flow of large current could cause a fire.
l Resistors cannot be used. Do not connect a resistor directly to the DC terminals P/+, N/–. This could cause a fire and destroy the inverter.
l The surface temperature of braking resistors can far exceed 100°C for brief periods. Make sure that there is adequate protection against accidental
contact and a safe distance is maintained to other units and system parts.
l Be sure to perform daily and periodic inspections as specified in the Instruction Manual. If a product is used without any inspection, a burst,
breakage, or a fire may occur.
Injury Prevention
l Apply only the voltage specified in the instruction manual to each terminal. Otherwise, burst, damage, etc. may occur.
l Ensure that the cables are connected to the correct terminals. Otherwise, burst, damage, etc. may occur.
l Always make sure that polarity (+ and –) is correct to prevent damage, etc. Otherwise, burst, damage, etc. may occur.
l While power is on or for some time after power-off, do not touch the inverter as it is extremely hot and you may get burnt.
level may lead to a serious consequence according to conditions. Please follow strictly the instructions of both
WARNING
CAUTION
CAUTION