ZPA Pečky MODACT MPS User manual

Type numbers 52 260 - 52 266
Electric part-turn lever actuators
with constant control speed
2/16
MOUNTING INSTRUCTIONS

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1. APPLICATION
The MODACT MPS and MPSP electric part-turn (lever) actuators operating at a constant speed are used
for remote control and automatic regulation of flaps, louvers and valves and to control the regulation members
of the heating and air-conditioning or other devices, for which they are suitable with their characteristics.
The MODACT MPS and MPSP Control actuators are designed for use in automatic control systems employing
a continuous control signal.
2. OPERATING CONDITIONS, OPERATING POSITION
Operating conditions
The actuators MODACT MPS,MPSP (MODACT MPS, MPSP Control) are resistant against influence of
operating conditions and external effects of classes AC1, AD5, AD7, AE4, AE6, AF2, AG2, AH2, AK2, AL2,
AM-2-2, AN2, AP3, BA4 and BC3 according to ČSN 33 2000-5-51 ed. 3.
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.
When actuators are to be installed in the working environment with temperature below -10 °C and in the
environment with relative humidity above 80 %, it is always necessary to use an anti-condensation heater
fitted to all actuators.
The electric actuators can be installed in areas with non-flammable and non-conductive dust, provided that
this does not adversely influence their function. Here, it is necessary to strictly observe ČSN 34 3205. It is
recommended to remove dust as soon as its layer is about 1 mm thick.
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.
Temperature
Surrounding temperature for actuators MODACT MPS (MPS CONTROL): from -25 °C to +70 °C and from -40 °C
to +60 °C. Surrounding temperature for actuators MODACT MPSP (MPSP CONTROL): from -25 °C to +60 °C and
from -40 °C to +60 °C (except 52 260).
Classes of external influences – as extracted from ČSN 33 2000-5-51 ed. 3.
Class:
1) AC1 – above-sea level ≤ 2000 m
2) AD5 – spouting water; water may spout in all directions
AD7 – shallow immersion, possible sporadic partial or full coverage (only MPSP)
3) AE4 – slight dust formation
AE6 – strong dust formation (only for MPSP type)
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

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The arctic version (type no. 52 261-6.6xx0; 52 261-6.6xx9; 52 261-6.8xx0; 52 261-6.8xx9; 52 261-6.9xx0;5 2 261-6.9xx9)
for surrounding temperature from -40 °C to +40 °C. The actuators in the arctic version should be resistant against impacts of
operating conditions characterized by temperature in ranging from -40 °C to +40 °C and relative humidity from 5 % to 95 % at
temperature +33 °C. These actuators will be designated with the letter F on the last place of the supplementary type number
(e.g. 52 261-6xx0F).
Operating position
The actuators can be operated in any operating position.
3. OPERATION MODE, SERVICE LIFE OF ACTUATORS
Operation mode
The actuators can be operated with the type of loading S2 according to ČSN EN 60 034-1. The run period at
temperature +50 °C is 10 minutes; the mean value of loading torque should not exceed 60 % of the value of maximum
tripping torque Mv.
The actuators can also work in the regime S4 (interrupted run with start-up) according to ČSN EN 60 034-1. Load factor
N/N+R is max. 25 %; the longest working cycle (N+R) is 10 minutes (course of working cycle is shown in the figure).
The highest number of closing operations in automatic regulation is 1200 cycles per hour. Mean value of loading torque with
load factor 25 % and surrounding temperature +50 °C is not higher than 40 % of maximum tripping torque Mv.
The highest mean value of loading torque is equal to rated torque of the actuator.
Service life of actuators
The actuator designed for shut-off valves must be able to perform at least 10,000 working cycles (Close-Open -Close).
The actuator designed for regulation purposes must be able to perform at least 1 million cycles with running time
(when the output shaft is moving) at least 250 hours. Service life in operating hours (h) depends on loading and
number of switching actions. High frequency of switching is not always beneficial for precision of regulation. For
reaching the longest possible faultless period and service life, it is recommended to set frequency of switching to the
lowest possible number of switching actions necessary for the given process. Orientational data of service life derived
from the set regulation parameters are shown in the following table.
Service life of electric actuators for 1 million starts
Service life [h] 830 1000 2000 4000
Number of starts [1/h] max. number of starts 1200 1000 500 250
4. TECHNICAL DATA
Supply voltage
Rated value of alternating power supply voltage of the electric motor for the actuators is 3-phase 230/400 V,
-15 % to +10 %, 50 Hz, the actuator type No. 52 260 equipped with electric motors 20 W, 60 W – 1 x 230 V, 50 Hz.
Other supply voltage for electric actuators should be discussed with the manufacturer. The actuators MODACT
MPS, MPSP Control 3 x 230/400 V, -15 % to +10 %, 50 Hz only.
Run time N Idle time R Cycle time
Course of working cycle
Course of working cycle
Mz Starting torque
Mstř Mean value of loading torque
Mv Maximum value of tripping torque

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Protective enclosure
Protection of the actuators MODACT MPS (MODACT MPS Control) is IP 55 according to ČSN EN 60 529.
Protection of the actuators MODACT MPSP (MODACT MPSP Control) is IP 67 according to ČSN EN 60 529
Noise
Level of acoustic pressure A max. 85 dB (A)
Level of acoustic output A max. 95 dB (A)
Tripping torque
At the factory, the tripping torque has been adjusted as shown in Table 1, according to the customer’s requirements.
If no tripping torque adjustment has been specified by the customer the maximum tripping torque is adjusted.
Self-locking
Self-locking is given by using a worm gear in the countershaft box.
Working stroke
The ranges of working stroke are given in Table No. 1.
Manual control
Manual control is performed by a hand wheel directly (without a clutch) and is also possible when the electric motor
is running (resulting motion of the output shaft is given by the differential gear function). By rotating the hand wheel in
the clock-wise direction the actuator output shaft rotates also in the clock-wise direction (when viewing the shaft into
the control box). Provided that the valve nut has a left thread, the electric actuator closes the valve.
Torque-limit switches in the actuator are set and work when the actuator is under voltage.
When using the manual control, ie. actuator is controlled mechanically, the torque-limit switches doesn't
work and the valve can be damaged.
5. ACTUATOR OUTFIT
Torque-limit switches
The actuator is fitted with two torque-limit switches MO, MZ (type DB1G-A1LC), each of which acts only in
one direction of motion of the actuator output shaft. The torque-limit switches can be set to operate at any point
of the working stroke. The tripping torque can be adjusted within the range shown in Table 1.
Position-limit switches
The PO, PZ position-limit switches limit the actuator working stroke, each being adjusted to operate in either end position
Actuators with resistive transmitter – type B 611, 2 pieces
Actuators type No. 52 260, actuators with current transmitter and actuators without transmitter – type DB1G-A1LC, 2 pieces
Position signalling
For signalling position of the actuator output shaft, two signalling switches, i.e. the SO, SZ signalling switch, each
for one direction of movement of the output shaft are used. The operating point of the microswitches can be set within
the whole working stroke range except the narrow band before the operating point of the microswitch used to switch off
the electric motor.
Actuators type No. 52 260, actuators with current transmitter and actuators without transmitter – type DB1G-A1LC, 2 pieces
Position transmitters
The MODACT MPS, MPSP electric actuators can be supplied without position transmitter or can be fitted with
position transmitter:
a) Resistance transmitter 2 x 100 Ω.
Technical parameters:
Position scanning resistance
Turning angle 0° – 160°
Non-linearity ≤ 1 %