Yaskawa Varispeed 626M5 - Manual (Page 34)

2.2 Checking and Controlling the Installation Site
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2.2 Checking and Controlling the Installation Site
CAUTION
D Always hold the case when carrying the Inverter.
If the Inverter is held by the front cover, the main body of the Inverter may fall, possibly resulting in inju-
ry.
D Mount the Inverter and the Converter on nonflammable material (i.e. metal).
Failure to observe this caution can result in a fire.
D Install a fan or other cooling device to keep the ambient temperature of Inverter and Converter
below 55_C (131_F) and the intake air temperature to heatsink below 45_C (113_F).
Overheating may cause a fire or damage to the unit.
Install the VS-626M5 Inverter and VS-656MR5 Converter in the installation site described below. Maintain
optimum conditions.
2.2.1 Installation Site
Install the Inverter and Converter under the following conditions.
D
Install the Inverter and Converter in a clean location free from oil mist and water drops. Water or dirty
oil inside the Inverter or Converter will decrease the insulation resistance, which may result in a ground
fault. Also, any oil on the electronic components may result in an unforeseeable accident.
D
Install the Inverter and Converter in a location not in direct sunlight. The interior temperature of the
Inverter or Converter exposed to sunlight will increase and exceed the operating ambient temperature,
which may reduce the service life of internal electronic components.
D
Install the Inverter and Converter in a location free from harmful gasses, liquids, excessive dust, and
excessive metal powder. Harmful gasses, corrosion of the electronic or conductive parts, and/or dust
on the Inverter or Converter will decrease the insulation resistance, which may result in a ground fault.
D
Do not install the Inverter and Converter on combustible material, such as wood.
D
If the Inverter or Converter is installed in a location where the operation conditions are less than ideal
because the occurrence of oil mist, install the Inverter or Converter in the oilproof-control panel.
Oil mist in the Inverter or Converter may cause the corrosion of electronic or conductive part, that may
then decrease the insulation resistance, which may result in a ground fault.
If installing the Inverter or Converter in the control panel, care must be taken when planning this instal-
lation to prevent oil mist from entering the panel thorough gaps in the welded sections.
D
Install the Inverter and Converter in a location free from radioactive materials and combustible materi-
als.
D
Install the Inverter and Converter in a location without excessive vibration.
D
Install the Inverter and Converter in a location free from chlorides.
D
Design the ventilation or heat exchanger considering the heat radiation of the Inverter and Converter.
Refer to Tables 14.9 to 14.12 for the heat radiation of each Inverter and Converter model. If the ventila-
tion is improper, the heatsink temperature fault protective function will work regardless of whether
or not the output is above the rated value.
D
To cool the Inverter and Converter efficiently, install them vertically. Considering the maintainability
and ventilation of the Inverter and Converter, provide sufficient space on the left, right, top, and bottom
of the Inverter and Converter. Refer to 2.3 Clearance for details. If the ventilation is improper, the heat-
sink temperature fault protective function will work regardless of whether or not the output is above
the rated value.
D
Although the Inverter and Converter operate between 05C and 555C (325F and 1315F), install the In-
verter and Converter so that the maximum temperature of the heatsink inlet air will be 455C (1135F).
If the temperature of the inlet air is excessively high, the heatsink temperature fault protective function
will work regardless of whether or not the output is less than the rated value.
D
Install the Inverter and Converter in a location where the maximum ambient humidity is 90% with no
condensation.
D
The heat dissipation in the control panel can be reduced if the control panel has a ventilation duct and
the heatsink of the Inverter and that of the Converter are exposed in the duct to the cooling air. In this
case, the capacity of the heat exchanger, if required, can be reduced. Refer to 15.5 Inverter/Converter
Cooling Design for details.
D
If the Inverter is installed in a panel, the air in the box can be mixed to cool the Inverter. The Inverter
must not be installed outside an enclosure. Although the surface of the PCB is coated with varnish,
the Inverter may fail to operate or result in accidents if the PCB comes in contact with moisture or dust.
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