SKF CMSS 785 Series, User Manual

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CMSS 785-12, CMSS 785-22
Unit mm
4.1.4 Driver
The driver should be installed in a location that satisfies the following environmental and
installation requirements.
Environmental conditions
• Temperature: the temperature of the driver must remain within the range –40 to 80 °C.
• Ambient humidity: must be in the range 30 to 95% RH (non condensing).
• Vibration levels at the driver: must be 10 m/s
2 or less (10 to 150 Hz).
• Air cleanliness: it is desirable to have an air dust particle amount of 0,2 mg/m
3
or less. It is
also desirable to have an especially low concentration of corrosive gasses such as hydrogen
sulfide, NOx gas, and chlorine, and conductive particles such as iron dust and carbon. (The
allowable amount of hydrogen sulfide and NOx gas is based on JEIDA-29 (1979) CLASS S1.)
JEIDA: Japanese Electronic Industry Development Association
– JEIDA-29 (1979) CLASS S1
– Hydrogen sulfide: 0,01 ppm or less
– NOx gas: 0,05 ppm or less
–
(Ambient temperature: 25 °C ± 5 °C, humidity: 40 to 80% RH)
Installation conditions
• Do not locate the driver enclosure directly above heat sources.
• Take into account both conducted and radiated heat from the machine, when it is running
and when it is shutting down.
The driver is not weatherproof, so always mount it in a suitable cabinet or enclosure, see also
the EMC considerations that follow in section 4.2.
The detail of the driver mounting differs according to the model chosen:
CMSS 785-12 and CMSS 785-22 are screw mounting
The driver/mounting plate assembly offers two mounting options to the user’s enclosure/
panel:
• 4x mounting holes on a 50,8 mm pitch, or
• 4x mounting holes on a 31 x 92 mm pitch
All mounting holes are 4,5 mm diameter, refer drawing below.
31
(1.22˝)
50.8
(2.0˝)
50.8
(2.0˝)
92 (3.6˝)
4x ∅4.5
(0.178˝)
4x ∅4.5 (0.178˝)
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