Mitsubishi Electric FATEC FR-A800 Manual page 125

7
REVIEW OF INSTALLATION ENVIRONMENT
(5) Arrangement of the discharging resistor
When using a discharging resistor or externally installed high-duty brake resistor (FR-ABR), take
necessary countermeasures against the heat generated from the resistor.
Consider the cooling system regarding the resistor as a heater.
It is recommended to install the discharging resistor outside the enclosure.
Provide a cover which has
a strong heat dissipation
effect to prevent danger such
as burn injury.
Fig. 7.31 Installing method of the resistor
(6) Installation orientation of the inverter
If the installing orientation is not correct, the heat dissipation effect of the inverter is reduced
significantly, and the generated heat remains inside the inverter. (The printed plate of the control
circuit is not cooled by a cooling fan.)
○
Vertical installation
(7) Standard specifications of the installation environment (for the FR-A800 series 200 V
class)
Surrounding
LD, ND (initial setting), HD
air
SLD
temperature
Ambient humidity
Atmosphere
Altitude
Vibration
AC voltage/frequency
Permissible voltage fluctuation
Permissible frequency fluctuation
7.3 Problems and measures when using inverter
120
Use a cooling
fan as required.
Discharging resistor
Fig. 7.33 Installation orientation of the inverter
Item
Caution: The temperature of the resistor surface may
increase up to approximately 300°C. Pay attention
to the material of the installation side and the
arrangement of multiple resistors.
Fig. 7.32 Arrangement of the resistors
×
Side installation
-10°C to +50°C (non-freezing)
-10°C to +40°C (non-freezing)
With circuit board coating: 95% RH or less (non-condensing)
Without circuit board coating: 90% RH or less (non-condensing)
Indoors (free from corrosive gas, flammable gas, oil mist, dust and
dirt)
Maximum 1000 m
2
5.9 m/s or less at 10 to 55 Hz (directions of X, Y, Z axes)
Three-phase 200 to 220 V 50 Hz, 200 to 240 V 60 Hz
170 to 242 V 50 Hz, 170 to 264 V 60 Hz
±5%
Discharging resistor
7 cm or more away
from each other
×
Horizontal installation
Description