10 Introduction to the manual
Safety instructions
Use of warnings
Warnings tell you about conditions which can cause injury or death, or damage to the
equipment. They also tell you how to prevent the danger. The manual uses these warning
symbols:
WARNING! Only qualified electricians can do the work described in this
document. Obey the Safety instructions on the first pages of this manual. If you
ignore the safety instructions, you can cause injury or death.
General warning tells you about conditions, other than those caused by
electricity, which can cause injury or death, or damage to the equipment.
Safety in installation
These warnings are intended for all who install or connect an optional module to a drive,
converter or inverter, and need to open its front cover or door to do the work.
WARNING! Obey these instructions. If you ignore them, injury or death, or
damage to the equipment can occur.
• If you are not a qualified electrician, do not do installation or maintenance work.
• Disconnect the drive, converter or inverter from all possible power sources. After you
have disconnected the drive, converter or inverter, wait for 5 minutes to let the
intermediate circuit capacitors discharge before you continue.
• Disconnect all dangerous voltages connected to any control signal connectors in
reach. For example, it is possible that 230 V AC is connected from outside to a relay
output of the drive, converter or inverter.
• Use a multimeter to make sure that there are no parts under voltage in reach. The
impedance of the multimeter must be at least 1 Mohm.
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