Mitsubishi Electric MS-T Series, Instruction Manual

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4
1. Working Environment

Using this product in an environment or atmosphere other than the normal working
conditions could lead to failure. Always use the product under the normal working
conditions.
The working environment varies as the controller is used in a wide range of applications. However, the
product has been manufactured to be used under the following normal working conditions. Measures such
as those given in section (2) are required when using the product in an environment differing from the
following conditions.
A special-environment model, which takes special environmental measures, is also available upon request.
(1) Normal working conditions

Ambient temperature: –10

C to 40

C (applies to outside of control panel)
Max. daily average temperature 35

C, max. annual average temperature
25

C

Maximum temperature: 55

C, however, ambient temperature for boxed MS type is 40°C (annual
in the panel average temperature in the panel is 40°C or less)
Note that the magnetic contactor, magnetic motor starter and thermal
overload relay operation characteristics are affected by the ambient
temperature.

Relative humidity: 45 to 85%RH
Note that there must be no dew condensation or freezing.

Altitude: 2,000m or less

Vibration: 10 to 55Hz 19.6m/s
2
(Max.)

Impact: 49m/s
2
(Max.)

Atmosphere: Low levels of dust, smoke, corrosive gas, water or sodium.
When used in a sealed state for a long time, contact failure, etc., can occur.
Do not use the products in an atmosphere containing flammable gas.

Storage temperature/ : –30

C to 65

C / 45% to 85% RH
storage humidity Note that there must be no dew condensation or freezing.
Storage temperature refers to ambient temperature during transportation or
storage of product. When starting use of the product, the temperature must
be within the working temperature.
(2) Special environment measures
The main measures for when using the products under conditions that differ from the normal working
conditions are shown on the following page for reference.
There is a limit to how far the environment resistance of the product can be improved. Thus, an
appropriate structure for the outer box (panel) storing the product that is outdoor-proof, dust-proof, and
corrosion-proof must be used, to prevent damage.
CAUTION