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 %

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Transition resistance max. 1,4 Ω
Permitted voltage 50 V DC
Maximum current 100 mA
b) Type CPT 1Az passive current transmitter. Power supply to the current loop is not a part of the actuator.
Recommended feeding voltage is 18 – 28 V DC, at maximum loading resistance of the loop 500 Ω . The current
loop should be earthed in one point. Feeding voltage need not be stabilized; however, it must not exceed 30 V
or else the transmitter could be damaged.
Range of CPT 1Az is set by a potentiometer on the transmitter body and its starting value by corresponding
partial turning of the transmitter.
Technical parameters of CPT 1Az:
Scanning of position capacity
Working stroke adjustable 0° – 40° to 0° – 120°
Non-linearity ≤ 1 %
Non-linearity, including gears ≤ 2,5 % (for a maximum stroke of 120°).
Hysteresis, including gears ≤ 5 % (for a maximum stroke of 120°)
(The non-linearity and hysteresis are related to a signal value of 20 mA)
Loading resistance 0 – 500 Ω
Output signal 4 – 20 mA or 20 – 4 mA
Supply voltage for Rload 0 – 100 Ω 10 to 20 V DC
for Rload 400 – 500 Ω 18 to 28 V DC
Maximum supply voltage ripple 5 %
Maximum transmitter power demand 560 mW
Insulation resistance 20 MΩ at 50 V DC
Insulation strength 50 V ss
Operational environment temperature -25 °C to +60 °C
Operational environment temperature – extended range -25 °C to +70 °C (Additional on demand)
Dimensions ø 40 x 25 mm
c) Type DCPT active current transmitter. Power supply to the current loop is not a part of the actuator.
Maximum loading resistance of the loop is 500 Ω. For variants MODACT MPS, MPSP Control with the regulator
ZP2.RE5, it is used as a position sensor.
DCPT can be easily set by two push-buttons with LED diode on the transmitter body.
Technical parameters of DCPT:
Scanning of position contact-less magneto-resistant
Working stroke adjustable 60° – 340°
Non-linearity max. ±1 %
Loading resistance 0 – 500 Ω
Output signal 4 – 20 mA or 20 – 4 mA
Power supply 15 – 28 V DC, < 42 mA
Working temperature -25 °C to +70 °C
Dimensions ø 40 x 25 mm
For the transmitters CPT 1Az as well as DCPT, a two-wire connection is used, i.e., the transmitter, the power
supply and the load are connected in series. The user should secure that the two-wire circuit of the current
transmitter is connected to the electric earth of the associated regulator, computer, etc. This connection should
only be made at a single point in any section of the circuit, outside the actuator.
Anti-condensation heater
The actuators are fitted with an anti-condensation heater preventing condensation of water vapour. It is connected to
the AC mains of voltage 230 V.
Local control
Local control serves for controlling the actuator from the site of its installation. It includes two change-over switches: one
with positions “Remote control – Off – Local control”, the other “Open – Stop – Close”. The former change-over switch can
be built-in as two-pole or four-pole. The change-over switches are installed in a terminal-board box and the control elements
on the lid of this terminal-board box.

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Position regulator
The position regulator built-in in the actuator enables to control position of the output shaft of the actuator and thus
also the valve by the input analog signal.
The control unit is microprocessor-based programmed for regulating the actuator, ascertaining and repairing error
conditions, and for simple setting of regulation parameters.
The regulator design enables to switch off the regulator feeding. If the regulator is not under voltage it does not
regulate but, after its feeding is switched on, the regulator function is automatically restored; the parameters and
diagnostic data stored in the regulator memory are retained.
The regulator circuits compare the input signal with the feedback signal from the position transmitter of the actuator
output shaft. If there is a difference between the input and feedback signals the regulator closes one of the built-in
contactors in the actuator so that the actuator shaft is reset to the position corresponding to magnitude of the input
signal. When the feedback signal is equal to the input signal the actuator stops.
The control parameters are set by functional push-buttons on the regulator or by PC connected to the regulator via
a serial interface for the period of setting the parameters or during the communication module.
Electro-dynamic brakes
It reduces the actuators run-down time from 0.5 – 1.3 s to 40 – 60 ms. This significant reduction in run-down time
precise the control. When the actuator is in a standstill no braking moment is exerted
BAM-002 it´s the optional equipment of MPS, MPSP Control actuator without regulator
The brake operates autonomously and is run by auxiliary contact of the contactor.
BR2 it´s always part of MPS, MPSP Control actuator with regulator
The brake is interconnected with the regulator that provides impulse for action.
Switching of electric motor, contactor unit
The actuators in variants Control are fitted with built-in reversing contactor combinations. These are assembled of two
contactors and an over-current relay. The combination also includes mechanical blocking that prevents both contactors from
being closed at the same time. This could, for instance, happen in case of wrong connection of jumpers on the terminal
board. The blocking is not dimensioned for long-term action. The over-current relays protects the electric motor against over-
loading and is dimensioned with respect to its output. According to the actuator version, the contactors are controlled by the
regulator, change-over switch of local control or external input. Control voltage is 230 V / 50 Hz as a standard; it is supplied
via contacts of position and/or moment micro-switches. Thus, these micro-switches need not be led out of the actuator.
The contactors used have a long mechanical service life and great reserve in switching ability; consequently, the electric
service life is also sufficient for particular use. The thermal relay is chosen so that it would reliably protect the electric motor
against overload. Set-up and outfit of the actuators provide for simple connection to power-supply and control circuits.
The power-supply circuits can be common for the whole group of actuators, which will save the cabling.
6. ELECTRIC PARAMETERS
External electric connection
a) Actuator terminal board
The electric actuator is equipped with a terminal board for connection to external circuits. This terminal board uses
screw terminals allowing conductors with a maximum cross-section 2,5 mm2 to be connected. Access to the terminal
board is obtained after removal of the terminal box cover. All control circuits of the electric actuator are brought out to
the terminal board. The terminal box is fitted with cable bushings for connecting the electric actuator. The electric motor
is fitted with an independent box with a terminal board and a bushing.
b) Connector
According to the customer's requirements the MODACT MPS, MPSP actuators can be fitted with the connector to
provide for connection of control circuits. This connector uses screw terminals allowing conductors with a maximum cross-
section 2,5 mm
2
to be connected. ZPA Pečky, a.s. also supplies a counterpart for the cable. In order to connect the cable to
this counterpart it is necessary to use special crimping pliers.
Actuator internal wiring
The internal wiring diagrams of the MODACT MPS, MPSP actuators with terminal designation are shown in this
Mounting instructions.
Each actuator is provided with its internal wiring diagram on the inner side of the terminal box. The terminals
are marked on a self-adhesive label attached to a carrying strip under the terminal block.

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Current rating and maximum voltage of microswitches
Maximum voltage of microswitches is 250 V AC as well as DC, at these maximum levels of currents.
MO, MZ 250 V AC / 2 A; 250 V DC / 0,2 A
SO, SZ 250 V AC / 2 A; 250 V DC / 0,2 A
PO, PZ 250 V AC / 2 A; 250 V DC / 0,2 A
The microswitches can only be used as single-circuit devices. Two voltages of different values and phases cannot
be connected to the terminals of the same microswitch.
Isolation resistance
Isolation resistance of electric control circuits against the frame and against each other is min. 20 M Ω .
After dump test, isolation resistance of control circuits is min. 2 M Ω . Isolation resistance of the electric motor is
min. 1,9 M Ω . See Technical specifications for more details.
Electric strength of electric circuits isolation
Circuit of the resistance transmitter 500 V, 50 Hz
Circuit of the current transmitter 50 V DC
Circuits of microswitches and anti-condensation heater 1 500 V, 50 Hz
Electric motor Un = 1 x 230 V 1 500 V, 50 Hz
Un = 3 x 230/400 V 1 800 V, 50 Hz
Deviations of basic parameters
Tripping torque ±15 % of the maximum range value
Adjusting speed +10 % of the maximum range value
-15 % of the rated value
Working stroke 1 %
Angled lever play max 1 %
Protection
The control panel is connected to the protective terminal, which is located in the terminal box. During assembly is
necessary to connected the protective terminal according to ČSN 33 2000-4-41. MODACT MPS, MPSP Control
actuators have internal protective terminal in the electronic box.
If isn´t the actuator equipment with overcurrent protection when purchased is needed to ensure that
the protection is added externally.
7. DESCRIPTION
The actuators consist of the following modules (see Fig. 1)
a) Electric motor with gearbox 1
b) Power gear unit with manual control 2, 9
c) Control box with cover 6
d) Lever assembly 40, 8, 15
e) Terminal box 5
a) Electrical motor with gearbox (Fig. 1)
This module consists of a three-phase asynchronous motor and a flanged gear box with worm gear drive and spur
gears whose selection allows different control speeds of the actuator to be obtained. The worm gear drive gives the
whole actuator a self-locking feature.
b) Power gear unit with manual control (Fig. 1)
This module is a central mounting part of the actuator. It consists of a cast-iron box enclosing a differential planetary
gear unit. When motor drive is used the sun gear of the differential planetary gear unit is actuated by the input spur-gear
drive to which the movement is transmitted from the gearbox of an electric motor. The crown wheel of the planetary gear
unit is fixedly coupled to the worm wheel of the manual worm drive. Provided with a handwheel, the handwheel worm is
axially resilient-mounted by means of two sets of conical disk springs. In the manual control mode, the sun gear of the
planetary gear unit is braked, while the crown wheel which is driven with the help of the handwheel via the planetary
gearing by means of the worm gear drive, actuates a carrier that is fixedly connected to the output shaft.

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Fig. 1 – Actuator assembly
4 1 2 15 9 5
7
8
16
56
3
49
1540
Legend:
1 – Electric motor with countershaft gear box
2 – Power gear unit with hand control
3 – Control cable bushings
4 – Cable bushing of electric motor
5 – Terminal box
6 – Control box with cover
7 – Terminal box with cover
8 – Flange of lever assembly
9 – Handwheel
15 – Leverage stops
16 – Lock screws of leverage stops
40 – Lever
49 – Lower drive wheel
The handwheel is provided with a (right-hand threaded) locking screw that should be loosened before manual
control is used. At the end of manual control, the locking screw should be retightened. The planetary gearbox provides
for dependable motor and manual control. The box housing the power gear unit is fitted with three tapped feet for
mounting the actuator.
c) Control box (Fig. 1)
With the actuator in its normal position (i.e., with the axis of the output shaft in the horizontal plane), the control
box is on the actuator side wall opposite to the lever. Within the box, all electrical and mechanical devices (Figs. 2, 3, 6),
e.g., position-limit switches 25, torque-tripping unit 30, potentiometer 27 (Figs. 2, 6) or current position transmitter
61 (Figs. 3, 4, 5) are accommodated on the mounting plate of the control section (Fig. 2). The actuators always
employ a single position transmitter.
The control box is provided with cover 6 (Fig. 1). Three cable bushings or a connector are screwed in the
terminal box 5 (Fig. 1).
Fig. 2 – Base plate – version with potentiometer (Type No. 52 260 – 52 266)
29
64
R2
3728
273623
54
Legend:
23 – Upper cam for the OPEN position–limit switch (PO)
27 – ZPA potentiometer 2 x 100 Ω
28 – Lock screws of transmitter support
29 – Anti–condensation heaters
36 – Lock screws of upper cam
37 – Lock screws of lower cam
54 – Potentiometer support
64 – Unit of position–limit and signalling switches

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Fig. 4 – Base plate with current transmitter – without position and signalling switches
– transmitter directly on output shaft
(this version is designated with the digit 9 at the second place of the supplementary number, e.g. 52 261.x9xx)
29
61
30
31
Legend:
29 – Heating elements
30, 31 – Moment unit
61 – Current transmitter
Fig. 3 – Base plate – version with current position transmitter (Type No. 52 260)
63
18
12
61
60
12
22
24 23
1
SO
SZ
PO
PZ
17
62
19
31
38
22
31
61
33 30
64
32
29
3
2
4
Legend:
12 – Mounting plate of control section
17 – Drive wheel
18 – Change wheel
19 – Steel band trade–named CHRONIFER
22 – Clutch spring
23 – Upper cam for the OPEN position–limit switch (PO)
24 – Lower cam for the CLOSE position–limit switch (PZ)
29 – Anti–condensation heaters
30 – Torque–limit switching unit
31 – Can drum shown in Fig.3
32 – OPEN torque–limit switch (MO)
33 – CLOSE torque–limit switch (MZ)
38 – Capacitor
60 – Potentiometer of current transmitter
61 – Current transmitter
62 – Transmitter shim
63 – Power supply of 24 V DC for current transmitter
64 – Unit of position–limit and signalling switches