3
1. APPLICATION
Series
MODACT MONJ, MON, MOP
actuators have been specially designed for adjustment of fittings and other
devices for which they are suitable due to their properties and reversing rotary motion in particular. These actuators can
be usedin remote control circuits. When fitted with a current transmitter, they can be used even in automatic control
circuits operating in duty S4 - 25 %; 1,200 h
-1
.
2. OPERATING CONDITIONS
The
MODACT MONJ, MON, MOP
actuators should withstand the effect of operating conditions and external
influences, Classes AA7, AB7, AC1, AD5, AE5, AF2, AG2, AH2, AK2, AL2, AM2, AN2, AP3, BA3, BP3 and BC3,
according to ČSN Standard 33 2000-3 (mod. IEC 364-3:1993).
If the actuator is to be installed in the open-air space it should be provided with light roofing for protection against
the effect of direct solar radiation.
When the actuator is installed on a free area it is recommended to fit it with a light shelter against direct impact of
atmospheric effects. The shelter should overlap the actuator contour by at least 10 cm at the height of 20 – 30 cm.
If the actuator is used at a location with an ambient temperature under -10 °C and/or relative humidity above 80 %,
at a sheltered location, or in the tropical atmosphere, the anti-condensation heater which has been built in all actuators,
should be always used. One or two heater elements should be connected, as required.
Installation of the actuators at a location with incombustible and non-conducting dust is possible only if this has
no adverse effect on their function. It is advisable to remove dust whenever the layer of dust becomes as thick as
about 1 mm.
Notes:
A sheltered location is considered a space where atmospheric precipitations are prevented from falling at
an angle of up to 60° from the vertical. The location of the electric motor should be such that cooling air has free
access to the motor and no heated-up blown-out air is drawn in the motor again. For air inlet, the minimum
distance from the wall is 40 mm. Therefore, the space in which the motor is located should be sufficiently large,
clean and ventilated.
Classes of external influences
Basic characteristics - as extracted from ČSN Standard 33 2000-3 (mod. IEC 364-3:1993).
1) AA7 – Combined action of surrounding temperature from -25 °C to +70 °C (actuators with plastic lubricant) or
from -25 °C to +55 °C (actuators with oil charge) and relative humidity higher than 10 %.
2) AB7
– Ambient temperature to Point 1); minimum relative humidity 10%, maximum relative humidity 100% with
condensation
3) AC1
– Altitude ≤ 2,000 m above sea level
4) AD5
– Splashing water in all directions
5) AE5
– Small dust content of air; mean layers of dust; daily dust fall more than 35 mg/m
2
, but not exceeding
350 mg/m
2
6) AF2
– Corroding atmosphere and pollutants; the presence of corroding pollutants is significant.
7) AG2
– Average mechanical stress; in current industrial plants
8) AH2
– Medium vibrations; in current industrial plants
9) AK2
– Serious risk of growth of vegetation and moulds
10) AL2
– Serious danger of the occurance of animals (insects, birds, small animals)
11) AM2 – Harmful effect of escaping vagabond currents
12) AN2 – Medium solar radiation with intensities > 500 W/m
2
and ≤ 700 W/m
2
13) AP3
– Medium seismic effects; acceleration > 300 Gal ≤ 600 Gal
14) BA4
– Personal abilities; instructed people
15) BC3 – Frequent contact with the earth potential; persons coming frequently into contat with „live“ parts or
standing on a conducting base
Operating position
Working position of actuators MODACT®: actuators with plastic lubricant - any position; 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.
Summary of Contents for MODACT MON 100/130-100
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