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Operating Instructions – Electronic Motor DRC.-..-DAC
13
Surface protection
Technical Data and Dimension Sheets
13.5 Surface protection
13.5.1 General information
SEW-EURODRIVE offers the following optional protective measures for DRC motors
that are operated under special ambient conditions.
• OS surface protection
Special optional protective measures are also available for the gear unit / motor, see
"DRC Gearmotors" catalog.
13.5.2 Surface protection
Instead of standard surface protection, DRC motors can be equipped with OS1 to OS4
surface protection as an option. The special procedure Z can also be performed in
addition. Special measure Z means that large contour recesses are filled with rubber
before painting.
Surface protection
Ambient conditions
Application examples
Standard
Suitable for machines and systems in buildings and
rooms indoors with neutral atmospheres.
Similar to corrosivity category
1)
:
•
C1 (negligible)
•
Machines and systems in the
automobile industry
•
Conveyor systems in logistics areas
•
Conveyor systems at airports
OS1
Suited for environments prone to condensation and
atmospheres with low humidity or contamination, such
as applications outdoors under roof or with protection.
Similar to corrosivity category:
•
C2 (low)
•
Systems in saw mills
•
Hall gates
•
Agitators and mixers
OS2
Suited for environments with high humidity or mean
atmospheric contamination, such as applications
outdoors subject to direct weathering.
Similar to corrosivity category:
•
C3 (moderate)
•
Funiculars and chair-lifts
•
Applications in gravel plants
OS3
Suited for environments with high humidity and
occasionally severe atmospheric and chemical
contamination. Occasionally acidic or caustic wet
cleaning. Also for applications in coastal areas with
moderate salt load.
Similar to corrosivity category:
•
C4 (high)
•
Sewage treatment works
•
Port cranes
•
Mining applications
OS4
Suitable for environments with permanent humidity or
severe atmospheric or chemical contamination.
Regular acidic and caustic wet cleaning, also with
chemical cleaning agents.
Similar to corrosivity category
2)
:
•
C5-1 (very high)
•
Drives in malting plants
•
Wet areas in the beverage industry
•
Conveyor belts in the food industry
1) According to DIN EN ISO 12 944-2
2) According to DIN EN ISO 12944-2, classification of ambient conditions
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