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1 Installation
MITSUBISHI CNC
1.4 Installation of the Drive Unit
1.4.1 Environmental Conditions
(Note) When installing the machine at 1,000m or more above sea level, the heat dissipation characteristics
will drop as the altitude increases in proportion to the air density. The ambient temperature drops 1%
with every 100m increase in altitude.
When installing the machine at 1,800m altitude, the heating value of the drive unit must be reduced
to 92% or less. The heating value is proportional to the square of the current, and required current
decreasing rate follows the expression below.
Therefore, use the unit with the reduced effective load rate to 95% or less.
CAUTION
1. Install the unit on noncombustible material. Direct installation on combustible material or near combustible materials may
lead to fires.
2. Follow the instructions in this manual and install the unit while allowing for the unit mass.
3. Do not get on top of the units or motor, or place heavy objects on the unit.
Failure to observe this could lead to injuries.
4. Always use the unit within the designated environment conditions.
5. Do not let conductive objects such as screws or metal chips, etc., or combustible materials such as oil enter the units.
6. Do not block the units intake and outtake ports. Doing so could lead to failure.
7. The units and servo motor are precision devices, so do not drop them or apply strong impacts to them.
8. Do not install or run units or servo motor that is damaged or missing parts.
9. When storing for a long time, please contact your dealer.
10. Always observe the installation directions. Failure to observe this could lead to faults.
11. Secure the specified distance between the units and panel, or between the units and other devices. Failure to observe
this could lead to faults.
Environment Conditions
Ambient temperature 0°C to +55°C (with no freezing)
Ambient humidity 90% RH or less (with no dew condensation)
Storage temperature -15°C to +70°C (with no freezing)
Storage humidity 90% RH or less (with no dew condensation)
Atmosphere
Indoors (no direct sunlight);
no corrosive gas, inflammable gas, oil mist, dust or conductive fine particles
Altitude
Operation/storage: 1000m or less above sea level
Transportation: 13000m or less above sea level
Vibration
Operation/storage: 4.9m/s
2
(0.5G) or less Transportation: 49m/s
2
(5G) or less
0.92 = 0.95
Required current decreasing rate =