9
Chapter 3
Installation and Wiring
3.1 Installation
○
1
Installation location of unit
The conditions in the installation location affect the life and the reliability of the inverter. Avoid using it in the
following places.
(1) If the DB unit is installed in a highly humid or dusty place, or in a place exposed to water or oil, the
circuit insulation will be deteriorated, and the life of the parts will be shortened.
(2) If the working ambient temperature is too high, the life of the capacitor and cooling fan motor will be
shortened.
(3) In a place with corrosive gas, connector contact failure, breaking of electric wires and damage of parts
may be caused.
(4) In a place with heavy vibration, connector contact failure, breaking of electric wires and damage of parts
may be caused.
(5) If the DB unit is used at an ambient temperature of 0
℃
or less, use a heater to increase the temperature
to more than 0
℃
at the start of the DB unit. After the DB unit starts, it generates heat by itself to
more than 0
℃
and will operate normally.
Installing the unit
To use dynamic brake unit installed in a control panel, install as follows.
DANGER
[
Mounting
]
Improper installation may cause an electric shock or a fire.
(1) Installation direction
VFDB2009 DB unit turns a main circuit terminal down and attaches it perpendicularly. If installed
horizontally, it will not be ventilated sufficiently and will be overheated. Enogh consideration must be
taken to the routes of suction and exhaust of air.
Moreover, the cooling fan of DB unit (VFDB2009-200F) with a cooling fan inhales from the bottom, and
exhausts air to the top. Keep sufficient space above the unit so that ventilation is not prevented by
wiring dusts, etc.
When installing VFDB2009 DB unit, keep cooling spaces as shown in the following figure3.1.
When VFDB2009 DB unit is installed in a control panel, ventilate the panel to keep the temperature in
the panel within 50
℃
. If the ambient temperature is high, the reliability of the inverter will be
degraded.
(2) Cautions
Surely exhaust the heat generated by the DB unit to the outside of the panel. Prevent the exhaust from
the DB unit to circulate in the panel.
Install the resistor on the outside of the panel as much as possible.
Avoid using the DB unit in a considerably coarse environment.
Summary of Contents for VFDB2009 Series
Page 1: ...VFDB2009 Operation Manual...
