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Use of Warnings and Notes
There are two types of safety instructions throughout this
manual:
• Notes draw attention to a particular condition or fact, or
give information on a subject .
• Warnings caution you about conditions which can result in
serious injury or death and/or damage to the equipment .
They also tell you how to avoid the danger . The warning
symbols are used as follows:
Electricity warnings warn of hazards from electricity
which can cause physical injury and/or damage to the
equipment .
General warnings warn about conditions, other than
those caused by electricity, which can result in physical
injury and/or damage to the equipment .
DANGER
The MD5 adjustable speed AC drive should ONLY be installed
by a qualified electrician.
DANGER
Even when the motor is stopped, dangerous voltage is present
at the power circuit terminals U1, V1, W1 (L1, L2, L3) and U2,
V2, W2 (T1, T2 T3) and, depending on the frame size, UDC+
and UDC-, or BRK+ and BRK- .
DANGER
Dangerous voltage is present when input power is connected .
After disconnecting the supply, wait at least 5 minutes (to let
the intermediate circuit capacitors discharge) before removing
the cover .
DANGER
Even when power is switched off from the input terminals
of the MD5, there may be dangerous voltage (from external
sources) on the terminals of the relay outputs .
DANGER
When the control terminals of two or more drives are
connected in parallel, the auxiliary voltage for these control
connections must be taken from a single source which can
either be one of the drives or an external supply .
DANGER
Disconnect the internal EMC filter when installing the drive
on an IT system (an ungrounded power system or a high-
resistance-grounded [over 30 ohm] power system) .
DANGER
Do not attempt to install or remove EM1, EM3, F1 or F2
screws while power is applied to the drive’s input terminals .
WARNING
Do not control the motor with the disconnecting device
(disconnecting means); instead, use the control panel keys
or commands via the I/O board of the drive . The maximum
allowed number of charging cycles of the DC capacitors (i .e .
power-ups by applying power) is five in ten minutes.
WARNING
Never attempt to repair a malfunctioning MD5; contact the
factory or your local Authorized Service Center for repair or
replacement .
WARNING
The MD5 will start up automatically after an input voltage
interruption if the external run command is on .
WARNING
The heat sink may reach a high temperature . Note: For more
technical information, contact the factory or your local Daikin
representative .
OM 1191 • MD5 VFD
4 www .DaikinApplied .com
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Содержание MD5
Страница 47: ...Figure 8 Alternate Wiring Diagram Embedded Fieldbus www DaikinApplied com 47 OM 1191 MD5 VFD ...
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