4
3) AE4
– slight dust formation
AE6
– strong dust formation
4) AF2
– occurrence of corrosive or polluting agents is atmospheric; presence of corrosive pollutants is significant
5) AG2
– mean mechanical strain; in normal industrial operations
6) AH2
– mean vibrations; in normal industrial operations
7) AK2
– serious risk of plant and moulds growth
8) AL2
– serious risk of occurrence of animals
(insects, birds, small animals)
9) AM-2-2 – normal level of signal voltage. No additional requirements.
10) AN2
– mean solar radiation. Intensity > 500 and ≤ 700 W / m2
11) AP3
– mean seismic impacts; acceleration > 300 Gal ≤ 600 Gal
12) BA4
– capability of persons; instructed persons
13) BC3
– frequent contact of persons with ground potential; persons often touch foreign conductive parts or
stand on conductive substrate
Operating position
Working position of actuators
MODACT
®
MONED, MOPED, MONEDJ actuators with plastic lubricant – any position.
The actuators with plastic lubricant are labelled
“Filled: solid grease”
on the power box at the side of the hand-wheel.
Actuators with oil charge – position limited only by slope of electric motor axis – max. 15° under the horizontal level. In this way,
reducing of service life of rubber sealing of the electric motor shaft by possible fragments or impurities from the oil filling is prevented.
When the actuator is assembled with the electric motor above the horizontal plane the oil filling should be topped up
so that reliable lubrication of the motor pinion is ensured.
The actuators with oil filling are not labeled.
3. OPERATION MODE, SERVICE LIFE OF ACTUATORS
Operation mode
According to ČSN EN 60 034-1, actuators can be operated in S2 load category. The operation time at +50 °C shall be
10 minutes, the mean load torque value shall be below or equal to 60 per cent of the maximum switch off torque
(Mv).
According
to ČSN EN 60 034-1, the actuators can also be operated in the S4 mode
(interrupted operation with acceleration intervals).
The
load factor N/N+R shall be maximum 25 per cent, the longest operation cycle N + R is 10 minutes
(the course of load is shown in
the picture).
The maximum number of switching actions in automatic control mode is 1200 actions per hour. The average mean
load torque at load factor of 25 per cent and 50 °C shall not exceed 40 per cent of the maximum tripping torque
(Mv).
The average mean load torque shall not exceed the nominal torque of the actuator.
Corrosion protection
Actuators are standardly delivered with surface treatment corresponding to category of corrosion aggressiveness
C1, C2 and C3 according to ČSN EN ISO 12944-2.
On customer's request is possible to do surface treatment correcponding to category of corrosion aggressiveness
C4, C5-I and C5-M.
In following table is provided and overview of environment for each categories of corrosion aggressiveness according
to ČSN EN ISO 12944-2.
Corrosion
aggressiveness
level
Example of typical environment
Outdoor
Indoor
C1
Heated buildings with clean atmosphere
(very low)
e.g. offices, shops, schools, hotels.
C2
Atmosphere with low level of pollution.
Unheated buildings, in which may occur
(low)
Mostly outdoor areas.
condensation, e.g. stocks, sports halls.
C3
Urban industrial atmospheres,
Production areas with high humidity and low air
(middle)
mild pollution of sulfur dioxide.
pollution, e.g. food industry, processing
Seaside areas with middle salinity.
factories, breweries.
C4
Industrial areas and seaside areas
Chemical plants, swimming pools,
(high)
with middle salinity.
seaside shipyard.
C5-I
(very high
Industrial areas with high humidity
Buildings or areas with predominantly continuous
– industrial)
and aggressive atmosphere.
condensation and high air pollution.
C5-M
(very high
Seaside areas with high salinity.
Buildings or areas with predominantly
– seaside)
continuous condensation and high air pollution.
