Zpa pecky, a.s. Modact moa User manual

Type numbers 52 020 - 52 026

Electric multi-turn rotary actuators

for nuclear power stations

outside active zones

2/20

INSTALLATION

INSTRUCTIONS

tel.: +420 321 785 141-9

fax: +420 321 785 165

+420 321 785 167

e-mail: zpa@zpa-pecky.cz

ZPA Pečky, a.s. is certified company in accordance with ISO 9001 as amended.

1. USE

The MODACT MOA rotary electrical actuators of the multi-revolution type are designed for remote control of the

special valves and gateways in the attended areas of the nuclear power plants with the VVER or RBMK reactors.

2. WORK ENVIRONMENT

The actuators must operate reliably in the environment characterized as follows:

Working temperature -20 °C to +55 °C

Atmospheric pressure 85 to 100.8 kPa

Relative air humidity up to 75 % at +55 °C

3. TECHNICAL PARAMETERS

Main technical characteristics are listed in the table.

Electric motor supply voltage 3 x 400 V / 50 Hz

or 3 x 380 V / 50 Hz

Degree of protection IP 55

4. WORK POSITION

The operating position of MODACT® MOA actuators is discretional with application of grease.

Actuators with grease are identified with label stating “Filled with grease”, located on the power box on the hand wheel side.

Actuators with oil filling, position is limited only by the electric motor axis inclination – max. 15° below horizontal line.

This prevents possible clippings and impurities in oil bath from reducing the service life of electric motor shaft seal.

In case of installation with electric motor above horizontal level, oil bath must be supplemented so as to secure motor

pinion’s lubrication.

Actuators with oil bath are not identified by any label.

Noise: Sound pressure level A max. 85 dB (A)

Sound power level A max.

95 dB (A)

CONTENS

1. Use .................................................................................................................................. 3

2. Work environment ................................................................................................................ 3

3. Technical parameters ........................................................................................................... 3

4. Work position ...................................................................................................................... 3

5. Description ......................................................................................................................... 4

6. Packaging and storage .........................................................................................................15

7. Verification of function of the device and placement ....................................................................15

8. Installation ........................................................................................................................15

9. Actuator adjustment ............................................................................................................15

10. Operation and maintenance ..................................................................................................16

11. Troubleshooting .................................................................................................................17

Table – basic technical parameters .......................................................................................... 18–19

Dimensional sketch of electric actuators MODACT MOA ............................................................... 20–23

Wiring diagrams .................................................................................................................. 24–30

Spare parts ........................................................................................................................ 31–33

5. DESCRIPTION

The MODACT MOA aactuators are designed to be mounted directly on a valve with the attachment via a flange per

ISO 5210 and a C/E-shaped coupling in accordance with DIN 3210. Arrangement of a part of the actuator is shown in

Figure 1. Using a counter-gear 2 the three-phase asynchronous motor 1 drives the central wheel of the differential gear

installed in the actuator support box (power gear) 3. During the motorized operation the planet differential crown gear is

held in its invariable position by a self-locking worm gearing. Hand wheel 4, attached to the worm, makes it possible to

operate the actuator manually while the motor is running. The hollow output shaft is fixed to the planet gear driver. The

output shaft reaches to the control box 5 where all the actuator controls are gathered – positional, signalling, and torque

switches, resistance or current transmitter, and heating resistor. Operation of position and signalling switches is derived,

through mechanisms, from the output shaft rotation.

The operation of torque switches is derived from the axial displacement of the “floating worm” of manual control, which

is sensed and transferred to the control box by a handle. Control elements are accessible upon removal of cover 6 of this

box. The terminal board box 7 is also hidden under the lid 8. The cable inlets are secured using the cable bushings (9).

Electric motor is fitted with a separate terminal board 10 and a cable bushing. Output shaft position can be identified on

position indicator 11.

The actuator's various operational functions such as tripping by torque, tripping by position, signalling, remote position

reporting (resistance or current transmitter) are provided by mechanical groups (units). These are located on the control

board (Figure 2), fitted inside the control box.

Control units are differentiated by function as follows:

a) torque tripping unit 12

b) signalling unit 13

c) transmitter setting mechanism 14

d) resistance transmitter with mechanical position indicator 15

e) position unit 16

f) heating element 17

The above units are universal, applicable to the MODACT MOA actuators of all sizes.

Important notice

Micro switches applied in the various units do not allow two voltages with varying values or phases to be connected to the

contacts of one micro switch. These micro switches can only be used as switches, interrupters or selectors for one circuit.

Description and function of control units

a) The torque tripping unit (Figure 3) as an independent assembly unit, it consists of base plate 19, which carried micro

switches 20 and at the same time creates bearings for torque control shaft 22 and locking shaft 29.

Torque control shaft transfers motion of the floating worm from power gear, using segments 23 or 24 and handles 45

or 46, to micro switches MZ or MO. Tripping torque value is adjusted by rotating the segments against the tripping handles.

For possible tripping torque set-up outside the manufacturing plant, segments 23 are provided with a scale providing

individually for each actuator indications of points for setting up the maximum and minimum torque. The torque setting is

Fig. 1 – Actuator assembly

Explanatory notes:

1 – Three-phase asynchronous

electric motor

2 – Counter gear set box

3 – Power gear

4 – Hand control wheel

5 – Control box

6 – Control box cover

7 – Terminal box

8 – Terminal box cover

9 – Cable bushings

10 – Electric motor terminal board

11 – Position indicator

12 – Cable bushing

10 5

11 6

4321

Locking screw

of the handwheel

Fig. 2 – Control board

14 67 66

13 66

then directly indicated by the notches in the segments. Increments on the scale only serve to provide a more accurate

division between the maximum and minimum torque levels, and thus to enable a more precise set-up of the tripping torque

outside the manufacturing plant if no loading bench is available. Segment 23 is intended for “closing” direction, segment 24

for “opening” direction.

Explanatory notes:

5 – Resistance position transmitter Vishay

11 – Local position indicator

12 – Torque tripping unit

13 – Signalling unit

14 – Transmitter setting mechanism

15 – Resistance transmitter with mechanical

position indicator

16 – Position unit

17 – Heating resistor

18 – Current transmitter CPT 1AAE

19 – Driving gear

65 – Contact plates

66 – Fixing bolts

67 – Basic control board

The encircled numbers follow the terminal numbering

on the terminal board.

Fig. 2a – Control board

The torque control unit is also fitted with a locking mechanism. The locking mechanism locks the torque switch once

tripped and thus prevents it from re-triggering and thus also the actuator from pulsing. The locking mechanism also prevents

the torque switch, after actuator rotation reversing, from tripping, and thus enables the electric motor’s breakaway torque to

be fully utilized. The locking mechanism operates in both directions of motion of the actuator’s output shaft, both in limit

positions and in the interim position, over 1 to 2 revolutions of the output shaft, after reversing of its motion.

With a load in the form of a counter-moment attached to the actuator output shaft the torque-operated shaft 22 and thus

also the segments 23 and 24 will move a bit round and hence the motion is transferred to the tripping lever 45 or 46. Should

the torque on the actuator output shaft reach the value to which the torque tripping unit is set, the tripping lever will depress

the push-button of the respective micro-switch, which disconnects the electric motor from the mains and the actuator stops.

Torque unit setting procedure

To set the tripping torque to another value, differing from the default value set at the manufacturing plant, proceed

as follows: release locking nut 44 (Figure 3), and the relevant locking screw 25 (for “closing” direction) or 26 (for opening

direction). Subsequently, put a screwdriver into the recess in the top segment 23 or 24 and rotate the segment until the

recess in segment 27 or 28 points at the relevant point on the scale. This point is identified by dividing the difference

between the maximum and minimum adjustable torque in Nm by the number of increments between the maximum and

minimum torque signs. This approach shows us how many Nm of tripping torque falls on one increment on the scale. By

interpolation, identify the point on the scale, to which the recess in segment 27 or 28 should point.

The coloured line on the scale that is closer to number 10 indicates the setting point of maximum tripping torque,

the other line identifies the setting point of minimum torque. The torque control unit must never be set up in a way that

the recess in the bottom segment lies outside the area between the two coloured lines on the scale.

Once the tripping torque has been set up, tighten locking screw 25 or 26 and locking nut 44.

b) The signalling unit (Figure 4) secures transmission of electric signal of the actuator input shaft’s position. The unit is

driven by gear 38 from the output shaft through a gearbox to cams 30, 31, controlling micro switches 36 (SO) and 37 (37).

The switching moment of signal switches can be selected in any point of the actuator's working stroke, except the narrow

area around end positions (signal switch must switch before the position switch while the output shaft is still moving).

Top cam 37 operates for the “closing” direction and bottom cam 36 pertains to "opening" direction. Signalling unitin

Figure 4 is designed as a separate installation assembly. It is installed on bracket 39, below which gears are fitted,

organized according to the kinematic diagram (Figure 5). The transmission is set up so that adjusting gear K3 can be

moved to various levels (I, II, III, IV, V) once locking screw 47 is released. By adjusting wheel K3, the setting range of

signalling switches and transmitter will change depending on the working stroke. Next to the Figure 5 there is a table with

the ranges of settings for the individual positions of the adjusting wheel K3.

Explanatory notes:

19 – Base plate

20 – Micro switches MZ, MO

21 – Adjuster

22 – Torque control shaft

23 – Top "closing“ segment

24 – Top "opening“ segment

25 – Locking “closing” screw

26 – Locking “opening” screw

27 – Bottom “closing” indicator

28 – Bottom “opening” indicator

29 – Locking shaft

44 – Locking nut

45 – Tripping “opening” handle

46 – Tripping “closing” handle

Micro-switches

schematic diagram

Fig. 3 – Torque unit

Numbers in circles correspond to terminal numbers on the

terminal board. Micro switches do not allow two voltages with

varying values or phases to be connected to the contacts of

one micro switch.

19 20 21 46 23 25 27

282624444522

36 37 38 3934333130

P1P2

Explanatory notes:

30 – Cams for "closing" direction

31 – Cams for "opening" direction

32 – Screws for cams for "closing" direction

33 – Screws for cams for "opening" direction

34 – Handle for "opening" direction

35 – Handle for "closing" direction

36 – Micro switch for "opening" (bottom) direction

37 – Micro switch for "closing" (top) direction

38 – Gear (driving gear)

39 – Unit support

3 4

Micro-switches

schematic diagram

Numbers in circles correspond to terminal numbers on the

terminal board.

Micro switches can be used only as single-circuit micro

switches. Two voltages with different values or phases must

not be led to the contacts of one micro switch.

Fig. 4 – Signalling unit

Explanatory notes:

K1 – Gear

K2 – Driving wheel

K3 – Shifting wheel

47 – Locking screw of adjusting gear

48 – Cam shaft

49 – Pinion with friction clutch

Note:

Position of adjusting gear for actuators ser. No. 52020 for the

various gears is specified on left-hand side of figure 6, for other

serial numbers on the right.

Fig. 5 – Cinematic diagram of gears

Table for setting the operating stroke

in the signalling unit gearbox

I 2 - 2.5 2 - 6.5 2 - 5 2 - 2.2

II 2.5 - 10.5 6.5 - 22 5 - 17 2.2 - 7.5

III 10.5 - 35 22 - 72 17 - 55 7.5 - 24

IV 35 - 111 72 -220 55 - 190 24 - 82

V 111 - 250 220 - 250 190 - 240 82 - 100

Type number

52 020 52 021

52 022

52 024

52 025 52 026

Gear

K2 47

Output shaft Gearbox Cams

SQC1

(PO)

SQT1

(PZ)

14-15

16-17

18-19

20-21

22-23

24-25

26-27

28-29

SQC2

(SO)

SQT2

(SZ)

SQC1

(PO)

SQT1

(PZ)

14-15

16-17

18-19

20-21

22-23

24-25

26-27

28-29

SQC2

(SO)

SQT2

(SZ)

Valve

open

Valve

closed

Terminal numbers

on terminal board

Fig. 6 – Working diagram of position and signalling switches

Open

Signalling unit adjustment

If the set up range of signal switches and transmitter needs to be changed, you have to change the position of adjusting wheel

K3. To re-adjust wheel K3, you must partially slide the signalling unit out of the control box (the length of wires connected to

micro switches allows it). This can be done after removing four screws 66 (Figure 2), which hold the unit on the base plate.

Once the signalling unit is readjusted to the necessary range, reinstall the unit. Before re-tightening screws 66, the check

wheels K1 and K2 (Figure 5) for correct meshing. At the lower end of the cam shaft 48 there is a pinion 49 which is connected

to the shaft 48 via and adjustable friction clutch. The movement for propulsion of the resistance transmitter is sensed from this

pinion. For arrangement of the cams and micro-switches of the signalling unit see Figure 4. The protrusions of the cams 30 or

31 deflect the levers 34 or 35 that operate the SO 36 and SZ 37 micro-switches.

When setting up signalling and position switches and transmitter, it is always necessary to re-align the actuator

output shaft to a position, in which the micro switches are supposed to switch or in which the required position of the

transmitter adjuster is supposed to be reached.

When adjusting the signalling switches, first release screws 32 (for SZ) or 33 (for SO) – Figure 4.

Than the cam 30 or 31 are turned in the direction of the arrow, until the microswitch triggers. In this position, hold the

cams and re-tighten the locking screws.

Notice

After each handling with locking screws in the control part of the actuator, these screws must be secured from

releasing by vibrations, by dropping quick-drying varnish on them. If these screws had previously been secured using

the varnish, the old varnish layer rests must be removed while adjusting, and the surface must be duly degreased

c) Resistance positional transmitter

I. Resistance transmitted including position indicator (Figure 8)

In the core of this unit there is a resistance transmitter 42 with its nominal value of the resistance signal equal to

100 Ω (minimum of 93 Ω ). The transmitter has a shaft led out on two sides. On the bottom end, pinion 43 is slid on

the shaft, which can slip through on the shaft in both end positions of the transmitter, which is beneficial when

adjusting this unit. The position indicator 40 is mounted on the upper end of the transmitter shaft. The indicator is fixed

on the transmitter shaft with the screw 41. This makes it possible to set the position indicator relative to the view port

in the control box lid.

Transmitter adjusting mechanism (Figure 7)

This mechanism consists of two toothed gates 51, 55 with the spring 52 hung in them. The bar with the pins 53 provides

for linear movement of both gates. This assembly can be turned around the pin 54. The entire mechanism is mounted on the

main control board 67

(Figure 2).

The toothed gates are engaged with the transmitter pinion 43

(Figure 7)

and pinion 49

(Figure 5).

Position of pin 54 determines the gear ratio of the setting mechanism – i.e. for various values of working stroke of

actuator and thus also for various turning of cam shaft in signalling unit, the transmitter turning angle and the local position

indicator turning angle is always 160°. This enables the rated transmitter signal value of 100 Ω to be available for any working

stroke value, i.e. 100 Ω.

Explanatory notes:

40 – Position indicator

41 – Indicator screw

42 – Resistance transmitter

43 – Transmitter pinion

Fig. 8 – Resistance transmitter with the position indicator

Explanatory notes:

51 – Toothed gate

52 – Spring

53 – Bar and pins

54 – Adjusting pin

55 – Toothed gate

64 – Screw

65 – Adjusting handle

Fig. 7 – Resistance positional transmitter shifting mechanism

Resistance transmitted and position indicator setting

To set the position indicator proceed as follows: With the output shaft in the “closed” position slide out the gate 51

(Figure 8) by pressing it towards the transmitter, disengaging it from the pinion 49 (Figure 5). Then, turn the gate clockwise

to the stop which forms a column under the signalling unit. Then, re-engage the gate with the pinion 49. The transmitter

pointer should point to 0°. If it does not, move the gate 51 back before its stop and depress the gate 55. This will release

the transmitter pinion and the transmitter pointer can be set near the mark 0° on the transmitter scale so that their teeth

engage properly with each other, once the gate 55 gets engaged with the pinion. Carefully turn the transmitter shaft to

make sure their clinching is correct. Then, we can again slide out the gate 51 from engagement, pushing it more vigorously

towards the stop (with the transmitter pointer moved to the mark 0° the pinion will slide through). Then, re-engage the gate

51 with the pinion 49. In this position, the oval openings in the toothed gates go parallel with the oval opening in the main

control board 67 (Figure 2). Now the transmitter is adjusted for the “closed” position. Then, loosen the screw 64 (Figure 8),

position the shifting lever 65 towards the transmitter to the stop point and retighten the screw 64.

Re-set the actuator to the “open” position; the transmitter pointer is re-set to a position between 0° and 160°. Release

screw 64 and turn aligning lever 65 anticlockwise until the transmitter indicator reaches 160°C sign. Subsequently re-

tighten screw 64 again and drop quick-drying ink on it to prevent it from releasing. Thus the transmitter is set to “open”

position. The position indicator is mounted on the resistance transmitter axis 42 (Figure 8) with the screw 41. This screw

will be loosened in its “open” position, and the indicator is turned, so that the mark 100 on the indicator scale 40 would

coincide with the color dot on the view port in the control box lid. Subsequently, tighten screw 41 and secure it in

tightened position by dropping quick-drying varnish on it.

II. Vishay resistance transmitter

Alternatively, actuators MOA can be equipped with a Vishay resistance transmitter. This transmitter has a shaft

led out on one side, with double wheel 73, consisting of toothed gears A and B, fixed on the end of the shaft. The

principle of drive and adjustment of Vishay transmitter is identical to current transmitter CPT 1AAE. The only

difference consists in sizes of toothed gears A and B of double wheel 73, and thus also in table including values

for working stroke setting.

Setting of position resistive transmitter

First of all you must set the appropriate gear from the output shaft of the actuator to transmitter shaft according to the

required working stroke of the actuator shown in the following table.

Configuration is performed using the adjustable wheel K3 in the gearbox of the signal unit as per the previous

paragraph b). Further, you must bring the necessary gear of the double wheel, affixed on the transmitter shaft, into

meshing position. The wheel with the smaller diameter is marked A, the larger wheel is marked B.

The adjustment is made by moving the spacers 72 either under the transmitter bracket (wheel A is engaged) or above

the transmitter bracket (wheel B is engaged). This is done at the position where the transmitter bracket is the most

distanced from the gearbox.

Wheel on the transmitter – gears

Description:

68 – Resistance transmitter

69 – Transmitter bracket

70 – Locking screw

71 – Contact plate

72 – Spacers

73 – Double wheel

74 – Spacer rings

74 69

686972 74

Then the bolts securing the transmitter bracket are slightly tightened so as to be able to shift the transmitter bracket

to a position where the A or B wheel are in engagement with the drive wheel. In this position, recheck the engagement of

the wheels and possibly using the spacers on the shaft adjust the height of the wheelset to the free wheel. There must be

a small play between the wheel A (or wheel B) and the driving wheel, so that the transmitter shaft is not stressed in the

direction perpendicular to its axis. Then correctly tighten the mounting bolts of the transmitter bracket and secure with

varnish.

Selection of gear of the wheel K3 and A, B wheels is performed according to the following table. If the required working

stroke is in overlap of two zones, it is preferable to choose a lower band.

Table for setting the operating stroke of the position resistive transmitter

Upon setting the suitable gear adjust the resistive transmitter according to the following procedure:

Due to the graduated gear ratio of the signal unit the potentiometer cursor does not move in the entire range of the

resistive track, but only in certain part.

When setting the signal unit to the end positions "open" and "closed" according to paragraph b) the resistive transmitter

is automatically set to a specific value.

Final setting of the transmitter is performed in the following manner:

Adjust the output shaft of the actuator to the "closed" position. Then loosen the screws of the transmitter contact plates

so that the entire transmitter can be rotated. Afterwards, rotate the transmitter to adjust it to the lowest resistance value

(approx. 4

, not less) and re-tighten screws on adapters. When you turn on the actuator or turn the handwheel to "open"

the resistance begins to rise up to the resistance value corresponding to the end position "open" (50 Ω to 98 Ω max).

Thereby the transmitter is adjusted.

Local position indicator

Local position indicator (Figure 8a) serves to approximately determine the output shaft position. It is mechanically

attached to cam shaft of signalling unit pos. 49, and can detached. When setting up cam shafts of signalling unit, the whole

indicator assembly must be removed after releasing fixing screws pos. 48.

Position indicator setting

First of all, position and signalling unit must be adjusted as per point b) of Installation Manual. Once this unit

has been adjusted, attach indicator assembly to cam shaft and adjust indicator according to the following

procedure:

Adjust actuator output shaft to “closed” position. When actuator is in this position, after releasing screw pos. 47,

set “closed” sign of bottom indicator against signalling unit’s pillar, indicated on figure 2a with bold print. (The

position of this pillar then corresponds to the position of the sign on the eye sight of the cover, once attached).

Tighten screw pos. 47 and move output shaft of actuator to “open” position. In this position, use the same approach

to adjust “open” sign of the top indicator, again against the same signalling unit pillar. While doing so, make sure

not to change the already set up position of bottom “closed” indicator. After attaching the cover, check the accuracy

of signs setting against sign on eye sight, and adjust position if necessary. Now the indicator has been adjusted

for both end positions.

I A 0,5 - 1,1 1,2 - 2,5 0,9 - 1,8

B 0,9 - 1,9 2,3 - 4,6 1,7 - 3,4

II A 1,7 - 3,5 4,0 - 8,2 3,1 - 6,4

B 3,2 - 6,4 7,7 - 15,4 5,9 - 11,7

III A 5,8 - 11,7 13,8 - 27,7 10,6 - 21,4

B 10,4 - 20,8 25,6 - 51,3 19 - 38

IV A 20 - 39,9 46,8 - 93,8 36,4 - 73

B 37,4 - 74,8 86 - 172,2 68,5 - 137

V A 67,1 - 134,2 155,4 - 311,1 122,9 - 245,7

B 122,5 - 245,3 292 - 584,5 224,3 - 450

Type number

Wheel

on the

transmitter

Gear 52020 52021 - 52022 52023 - 52026

Important advice:

If the MOA servomotors are to be used for control, it is necessary that in the end positions they are

tripped by positional terminal microswitches!

If a tight seal is required, e.g. in the "closed" position, it is possible to switch off by torque, but with the following

recommendation:

– regulation near the end of position "CLOSED" (up to 10 %) is undesirable

– for short valve strokes the torque blocking must be as short as possible. Therefore, for this purpose, it is better

to use MOA actuators in the version 20 02x.xxxS1, where the blocking time between 1/4 and ½ of revolution

of the output shaft of the actuator from the change of the direction of rotation.

– If the valve operation does not require torque blocking, we recommend ordering and using MOA actuators

in 52 02x.xxxxSM version. In this design the blocking of torque switches is excluded to both sides of rotation.

– The electric actuators can be supplied with a modified torque unit – without torque blocking to the closed side.

Current position transmitter CPT 1AAE – adjustment

First of all you must set the appropriate gear from the output shaft of the actuator to transmitter shaft according to

the required working stroke of the actuator shown in the following table on page 9. Configuration is performed using

the adjustable wheel K3 in the gearbox of the signal unit as per the paragraph b) on page 6. of the Installation Instructions.

Further, you must bring the necessary gear of the double wheel, affixed on the transmitter shaft, into meshing position.

The wheel with the smaller diameter is marked A, the larger wheel is marked B.

The adjustment is made by moving the spacers with two holes either under the transmitter bracket (wheel A is engaged)

or above the transmitter bracket (wheel B is engaged). This is done at the position where the transmitter support is the

most distanced from the gearbox. Then the bolts securing the transmitter bracket are slightly tightened so as to be able to

shift the transmitter bracket to a position where the A or B wheel are in engagement with the drive wheel. In this position,

recheck the engagement of the wheels and possibly using the spacers on the shaft adjust the height of the wheelset

Fig. 8a – Position indicator

Description:

43 – Indicator shaft

44 – Bottom “closing” indicator

45 – Top “opening” indicator

46 – Driving rubber collar

47 – Locking screw

48 – Fixing screw

49 – Top cam with opening

4647

to the free wheel. There must be a small play between the wheel A (or wheel B) and the driving wheel, so that

the transmitter shaft is not stressed in the direction perpendicular to its axis. Then correctly tighten the mounting bolts

of the transmitter bracket and secure with varnish.

The gear level of the wheel K3 and wheels A/B is chosen according to the table at the Figure 8. When the required

working stroke overlaps two zones it is better to choose the lower one.

Upon setting the suitable gear adjust the current transmitter according to the following procedure:

Attention!

Do not connect the CPT 1AAE transmitter without having checked the supply voltage. Transmitter outlets must not be

connected in the actuator with actuator ground conductor or earthed, not even incidentally.

Prior to checking feeding voltage, first disconnect transmitter from power supply source. On actuator’s terminals,

where the transmitter is connected to, determine voltage firstly using voltmeter with input resistance at least 1 MΩ.

Voltage must lie between 18 to 25 V, and must in no case exceed 30 V (this would result in transmitter destruction).

Then, connect the transmitter so that the source positive pole is connected to the positive pole of the transmitter, i.e.

to the red/black conductor (+) – it is connected to the terminal 51 or the tip 41 for the version with a connector.

The negative pole of the transmitter (black conductor) is connected to the terminal 52 or the tip 42 for the version

with a connector.

2. Connect mA-meter, digital as far as possible, with an accuracy of at least 0.5 %, in series with the transmitter. Adjust

output shaft to

“closed"

position. While doing so, the signal value must drop. If this is not the case, turn the output shaft in

“closing”

direction until the signal starts decreasing and until the output shaft reaches

“closed"

position.

Table for setting the working stroke

of position resistive transmitter CPT 1AAE

Gear

Wheel on the

transmitter

Type number

52 020 52 021 - 022 52 023 - 026

Wheel on transmitter – gears (version with current position transmitter)

Explanatory notes:

68 – Current transmitter CPT 1AAE

69 – Transmitter bracket

70 – Locking screw

71 – Contact plate

72 – Oval spacers

73 – Double wheel

74 – Spacer rings

74 73 72

69 70 71

Then loosen the screws of the transmitter contact plates so that the entire transmitter can be rotated. Turn the whole

transmitter to adjust current to 4 mA, and tighten adapter screws. Subsequently adjust actuator output shaft to

“open"

position. Use resistance trimmer in the front part of transmitter

(closer to the edge)

to set current to 20 mA. The trimmer’s

range is 12 revolutions and has no dead stops, so it cannot be damaged by overturning.

If correction by 20 mA was significant, repeat adjustments to 4 mA and 20 mA once again. Then, disconnect

the connected mA-meter. Do not turn the screw with varnish drops close to the centre. Properly tighten screws that lock

the transmitter adapters, and use varnish to protect them from release.

After adjustment, use voltmeter to verify voltage on transmitter terminals. It must lie between 9 and 16 V at the current

of 20 mA.

Note:

The transmitter’s curve has two branches – a decreasing branch relatively to “Z” position, or a rising branch relatively

to “Z” position. To select transmitter’s curve, turn the transmitter body.

d) Position unit (Figure 9)

This unit secures switches PZ or PO to trip when the preset output shaft speed has been achieved. The unit’s rotary

motion is derived from the output shaft motion, by means drive wheel 62.

This wheel turns stepwise the aligned gears, which control cam 57 (60). Cam turning to lever of switch PZ and PO will

make the switches change over.

Handling and adjustment

The unit can be set within the range from 2 to 250 revolutions (1 – 100 revolutions in the case of type No. 52 026).

Adjustment procedure is as follows:

a) Once the actuator has been fixed to the valve, set valve to closed position using the actuator.

b) In this position, push tripping rod 58 in vertical direction and then turn it by 90 degrees in any direction.

b) Turn set screw 56 in “Z” arrow direction until the cam 57 pushes the spring of micro switch PZ 63.

Turn tripping rod 58 by 90°. Tripping rod will slip out again. If tripping rod fails to slip out, just very slightly turn screw 56 or 59.

e) Use the actuator to move the valve by the required number of revolutions to open position.

f) Again push tripping rod 58 in vertical direction and then turn it by 90 degrees in any direction.

g) Turn set screw 59 in “O” arrow direction until cam 60 pushes the spring of micro switch PO 61.

Turn tripping rod 58 by 90°. Tripping rod will slip out again. If tripping rod fails to slip out, just very slightly turn screw 59 or 56.

Note:

Stop turning screw 56, 59 at the moment of switching!

If, prior to adjustment, cams are in such a position as indicated on Figure 9 or if cam has already pushed the micro

switch button, it is advisable to proceed adjustment as follows:

After pushing and turning tripping rod 58, turn set screws 56 or 59 against arrows direction until the cam's tip leaves the

micro switch lever (towards the closest set screw) and the micro switch switches (use suitable tester to make sure that

micro switch has switched). Then turn set screw 56 or 59 in arrow direction to turn the cam’s tip back to the micro switch

lever until the micro switch switches again (micro switch button) is pressed. Now the micro switch has been adjusted. Then

slide tripping rod 58 out as described above.

Numbers in circles correspond to terminal numbers on the

terminal board.

Micro switches can be used only as single-circuit micro

switches. Two voltages with different values or phases must

not be led to the contacts of one micro switch.

55 56

20 17

62 61

57 58 59 60 Explanatory notes:

55 – Decade gear

56 – Set screw “Z”

57 – Tripping cam “Z”

58 – Tripping cam

59 – Set screw “O”

60 – Tripping cam “O”

61 – PO Switch

62 – Driving wheel

63 – PZ Switch

3 4

Micro switch

scheme

Fig. 9 – Position unit

CONTROL block

CONTROL block extends the possibility of the use of MOA actuators with regulating valves in automatic control

system circuits and complements the equipment of these actuators.

For MOA actuators, the CONTROL block is supplied as an independent assembly that is electrically interconnected

with the relevant actuator, and controls its operation. The CONTROL block includes ZP2RE6 regulator with a feeding

transformer and a switching block. The switching block may include SSR, or SSR with brake, or contactors. Optionally,

the CONTROL block may also include a local control block.

CONTROL block technical data

Weight 8.1 kg

Surrounding Environment – normal working temperature from -20 °C to +50 °C

– relative humidity up to 90%

– radiation dose per life 200 Gy/life

– maximum dose rate 2,50E-03 Gy/hr.

Protection IP 67

Maximum cable length between the CONTROL block and actuator

100 m

The specifications of the connecting cable between the CONTROL block and the actuator resistive transmitter – 3 cores

with cross-section of 1 mm, shielded and suitable for the surrounding environment.

Wiring and adjustment manual of the CONTROL block is supplied separately.

6. PACKAGING AND STORAGE

The actuators are packaged together with the valve on which they are mounted. The packaging method

applicable to this assembly must be included in the technical conditions for the valves with the actuator mounted.

During the transportation of the actuators from the manufacturer’s factory to the domestic valve manufacturer

where the product is to be completed with the valve, the product must be covered. In such a case, the actuators

are transported unpackaged.

After receipt of actuators from manufacturer, actuators must be checked for possible damage suffered during

transport. Compare if data on serial plates of actuators correspond with the accompanying documentation and the

purchase order. Possible discrepancies, defects or damage must be immediately reported to supplier.

If the packed actuator is not installed immediately after receipt, it must be stored in dust-free room with ambient

temperature between -50 °C and +50 °C, with relative humidity up to 75 %, free from corrosive gases and fumes,

protected from harmful climate impacts. Any manipulation with the actuators at temperatures lower than -25 °C is

forbidden.

It is impermissible to store actuators outdoor or in areas unprotected from rainfall, snowfall and/or ice. Surplus

preservative grease must be only removed before commissioning the actuator. When storing unpacked actuators

for a period exceeding 3 months, we recommend you to insert a small bag with silica gel or another suitable

desiccant material into the terminal box.

The actuators must be stored in the environment characterized by the 1K3, 1Z1, 1B2, 1C1L, 1S1, 1M1 classes

of the climatic and other conditions pursuant to ČSN EN 60721-3-1.

At least once in a half-year during the storage period it has to be checked that the storage conditions are really

observed, that no water infiltrates into the storeroom, for example. When the actuators are stored in their original

intact packages the conservation has to be repeated in three-year intervals. Re-preservation is performed by

applying a continuous layer of a suitable preservative oil on the uncoated parts of the actuator. Within this

re-conservation, the bag with the drying agent must be dried up and put back into the package which has to be

tightly closed or sealed with a tape. Where the actuator is stored for over one year, the oil has to be replaced in

the power box before the product is put into service. Where the actuator is stored for over 4 years, all the rubber

gaskets have to be replaced before the product is put into service.

After the end of storage and before mounting the electric actuator to a valve, remove the preserving agent from

a connecting flange using a cloth soaked in suitable solvent.

7. VERIFICATION OF FUNCTION OF THE DEVICE

AND PLACEMENT

Before starting to install the device, again check actuator for any damage suffered in the course of storage.

The function of electric motor can be verified by connecting it to power supply through a switch and by powering it

up shortly. It is sufficient to observe if the electric motor starts up and if the output shaft starts rotating. Actuators must

be located in an area providing easy access to manual control wheel, terminal box and control box. Also, i t must be

verified again if the location meets the provisions of section “Operating Conditions”. If local conditions require another

method of installation, manufacturer’s approval must be obtained.

For working position of rotary actuators see the paragraph “Working position”.

8. INSTALLATION

Set actuator onto the valve so that its output shaft reliably fits into the valve coupling. Use four

(eight)

screws to

connect actuator with valve. Turn hand wheel to check correct connection between actuator and valve. Remove cover

of terminal box and carry out electrical connection of actuator according to internal connection diagram.

9. ACTUATOR ADJUSTMENT

Having fitted the actuator onto the valve and checked for correct mechanical connection, proceed with the actual set-up

and adjustment.

1. Shift the actuator manually to an intermediate position,

2. Connect actuator to power supply line, and shortly switch to verify correct rotation direction of the output shaft. When

looking inside the control box, the input shaft will rotate clockwise, while moving in “closing" direction.

Electrically set actuator close to “closed” position, use hand wheel to arrive precisely at the “closed” position. In this

“closed” position set the positional unit (PZ micro-switch) as under 5e and the resistance transmitter as under 5d,

4. Set output shaft to a position, where the signalling switch SZ is supposed to change over. Adjust SZ switch according

to instructions specified under point 5b.

5. Turn the actuator output shaft by the required number of revolutions and set switch to PO “open” position as described

under point 5e and resistance transmitter as described under point 5d. Several times verify the adjustment of position

and signalling switches, and the adjustment of resistive transmitter.

6. Set output shaft to a position, where the signalling switch SO is supposed to change over. Adjust SO switch according

to instructions specified under point 5b.

Notice

The control box cover must be removed by sliding it along the extended axis of the actuator output shaft while

avoiding any damage to position indicator. While installing valve onto pipe, use hand wheel of actuator to set the valve

into its central position. Shortly run the electric motor to verify if the actuator is rotating in the correct direction. If not,

swap over the two phase wires on the motor terminal board.

10. OPERATION AND MAINTENANCE

Correct operation of rotary actuators is determined by operational conditions and is usually limited to giving

impulses for the various functional tasks. In the event of power supply interruption, change the position of the

controlled valve by means of hand wheel. If the actuator is connected to automatic control circuit (this does not

mean regulating operation), we recommend you to install elements for remote control in the circuit so that the

actuator can be operated also in case of such automatic control circuit breakdown.

Operating personnel must ensure that the prescribed maintenance is carried out and that the actuator is

protected against harming ambient impacts and weather conditions unspecified in section “Operating Conditions”.

Torques in the actuators are set and operate if the actuator is energized. In the case that manual control is used,

ie. the actuator is controlled mechanically, the torque setting does not work and can cause damage to the valve.

Maintenance

The actuators are lubricated with plastic consistent lubricants or gearbox oil PP 80.

Actuators with plastic grease

Types of lubricants and their use are specified in table below. Lubricant included inside the supplied actuators is

intended for their entire service life.

Lubricant does not need to be changed and its quantity does not need to be checked over the entire service life of actuators.

Actuators with grease are identified with label stating “FILLED WITH PLASTIC GREASE”, located on the power box

on the hand wheel side.

Note: Lubricant CIATIM 221 is used for lubricating points of friction on rubber sleeves with metallic surfaces, roller brake

and hub of outer gear in planetary differential in 52 020 type actuators (in points of friction with shaft and on surfaces).

Actuators with oil charge

If the oil does not flow from the gearbox due to bad sealing, the charge is stable. Exchange oil after 500 hours of

actuator operation, however, no longer than after 10 years. Oil has to be checked on quarterly basis. The level of oil

should be as high as the filling hole. The actuator is filled with PP 80 motor-car gearbox oil.

Oil quantities for individual type numbers:

Adapter of actuator 52 026 is to be filled with fat PM MOGUL LV2-3, quantity: 3 kg.

11. TROUBLESHOOTING

1. The actuator in its end position, does not start up, motor humming – check for a missing phase.

If slider is jammed and if you cannot move it nor by hand wheel neither by motor, actuator must be dismounted and

the lock must be released mechanically.

Upon actuator start-up from end position of the output shaft, actuator stops voluntarily.

It must be made sure that recess in the switching wheel (Figure 2) stops in the end position of the output

wheel of actuator (after torque switch tripping) prior to running onto advance mechanism 21 (Figure 3). This can

be achieved by turning actuator output shaft to a suitable position while coupling actuator with valve, or by

turning switching wheel to suitable position relative to output shaft. For this reason, the switching wheel has two

grooves for a connecting key. Additionally, the switching wheel can also be reversed.

52 020 0,30 CIATIM 201

52 021, 52 022 0,50 and CIATIM 221

52 024 0,70 are used for all types

Actuator type number Lubricatn quantity (kg) Type of lubricant

Oil quantity

(l)

52020 1,3

52021 2,8

52022 2,8

52024 6

52025 12 or 14 (by origin)

52026 12 or 14 + grease – see below

Actuator type number

Table 1 – Basic technical parameters and characteristics of actuator type MOA

for valves installed in crewed areas of nuclear power plants

Execution data

Connecting dimensions, shape

0 1 2 4 5 6 7 8 9 C E

C E ZPA C E C E C E C E

Yes Yes Yes No No No No No No No No

No No No No No No No No No Yes Yes

No No No Yes Yes Yes Yes No No No No

No No No No No Yes Yes No No No No

Resistive type Vishay

Position

transmitter

Current transmitter power supply

(only for design with aluminum casing)

Current

Notes: 1. Instead of Y the following shall be entered: 2 - tfor design with cast iron casing; 3 - for design with an aluminum casing.

2. The following shall be entered instead of X:

Resistance *)

ACTUATOR

Size of the actuator

Type

designation

Opening

moment

tripping

range

[Nm]

Range

of setting

of the output

revolutions

[revs]

Actuator

output

shaft

displace-

ment speed

[1/min]

from the

output shaft

to the electric

motor

Voltage ratio

from the

output shaft to

the hand wheel

Maximum

force

on hand

wheel

[N]

Weight of the

actuator with

electric motor

ŠL/AL 5

[kg]

F10

F14

F16

F25

F30

Type number

1, 2

Basic

Supple-

mental

Grease

type

CIATIM

201

MOA 40-5 52 020 . YX42S 5 1 : 140 42/27 1LE1002-0CD2 0,09 635 0,53 0,95 39 0,63 1,8 1,8 2,52

MOA 40-9 52 020 . YX02S 9 1 : 112

MOA 40-15 52 020 . YX12S 20 – 40 15 1 : 72 40 42/24 1LE1002-0CC2 0,18 875 0,85 1,68 45 0,67 1,9 2,0 4,2 5,0

MOA 40-25 52 020 . YX22S 25 1 : 55 42/25 1LE1002-0CB2 0,25 1365 0,80 2,40 61 0,73 1,8 3,0 3,0

MOA 40-40 52 020 . YX32S 40 1 : 34 43/26 1LE1002-0CB3 0,37 1350 1,08 3,45 66 0,75 2,0 3,2 5,2 6,0

MOA 63-5 52 020 . YXD2S 5 1 : 140 70 42/27 1LE1002-0CD2 0,09 635 0,53 0,95 39 0,63 1,8 1,8 2,52

MOA 63-9 52 020 . YX52S 9 1 : 112

MOA 63-15 52 020 . YX62S 40 – 63 15 1 : 72 80

42/24 1LE1002-0CC2 0,18 875 0,85 1,68 45 0,67 1,9 2,0 4,2 5,0

MOA 63-25 52 020 . YX72S 25 1 : 55 42/25 1LE1002-0CB2 0,25 1365 0,80 2,40 61 0,73 1,8 3,0 3,0

MOA 63-40 52 020 . YX82S 40 1 : 34 60 43/26 1LE1002-0CB3 0,37 1350 1,08 3,45 66 0,75 2,0 3,2 5,2 6,0

MOA 160-8 52 020 . YX92S 100 – 160 8 1 : 122 150 42/24 1LE1002-0CC2 0,18 875 0,85 1,68 45 0,67 2,0 4,2 5,0

MOA 180-5 52 020 . YXA2S 100 – 180 5 1 : 140 170 1LE1002-0CD3 0,12 625 0,82 1,64 31 0,68 1,7 2,0 3,06

MOA 150-15 52 020 . YXB2S 100 – 150 15 1 : 72 42/25 1LE1002-0CC3 0,25 860 0,98 2,15 52 0,71 2,0 2,2 5,6 6,0

MOA 150-24 52 020 . YXC2S 24 1 : 122 1 : 27 110 1LE1002-0CA2 0,37 2755 1,06 3,6 64 0,79 2,2 3,4 2,8 5,0

MOA 140-7 52 021 . YX02S 63 – 140 2 – 250 7 1LE1002-0CD3 0,12 625 0,82 1,64 31 0,68 1,7 2,0 3,06

MOA 160-9 52 021 . YX42S 9 1 : 98

63/37 1LE1002-0CC3 0,25 860 0,98 2,15 52 0,71 2,0 2,2 5,6 6,0

MOA 160-16 52 021 . YX52S 16 1 : 56 65/40 1LE1001-0DC2 0,37 925 1,14 4,32 67 0,69 2,1 4,0 8,1 9

MOA 160-25 52 021 . YX62S 63 – 160 25 120 69/41 1LE1001-0DC3 0,55 935 1,65 7,17 73 0,66 2,5 4,4 14 12

MOA 160-40 52 021 . YX12S 40 1 : 36 70/43 1LE1001-0EB0 1,1 1425 2,5 14 81 0,78 2,3 5,6 17 13

MOA 160-63 52 021 . YX22S 63



1 : 22 75/49

MOA 125-100 52 021 . YX32S 63 – 125 100



1 : 14 75/49 1LE1001-0EB4 1,5 1435 3,3 21,1 83 0,79 2,6 6,4 26 16

MOA 250-9 52 022 . YX42S 9 1 : 98 68/42 1LE1001-0DC2 0,37 925 1,14 4,32 67 0,69 2,1 4,0 8,1 9

MOA 250-16 52 022 . YX52S 160 – 250 16 1 : 56 160 1LE1001-0DC3 0,55 1,65 7,17 73 0,66 2,5 4,4 14 12

MOA 250-25 52 022 . YX62S 25 70/44 1LE1001-0EC0 0,75 935 2,05 8,4 76 0,70 2,0 4,1 15,4 13

MOA 250-40 52 022 . YX12S 40 1 : 36 190 72/45

MOA 220-63 52 022 . YX22S 160 – 220 63



1 . 22 160 75/49 1LE1001-0EB4 1,5 1435 3,3 21,1 83 0,79 2,6 6,4 26 16

MOA 250-80 52 022 . YX32S 160 – 250 80



1 : 36 190 75/50 1LE1001-0EA4 2,2 2890 4,5 32 83 0,85 2,5 7,1 18,3 15

MOA 400-16 52 024 . YX92S 16 1 : 42 130/85 1LE1002-1BD2 1,5 700 4,65 15,5 70 0,66 1,6 3,3 32 29

MOA 400-20 52 024 . YX02S 20 1 : 47 122/73 1LE1001-0EC4 1,1 935 2,9 12,7 78 0,70 2,2 4,4 24,6 16

MOA 400-40 52 024 . YX12S 250 – 400 40 210 122/79 1LE1002-1BC2 2,2 940 5,7 22,1 78 0,72 2,3 4,1 53 25

MOA 400-63 52 024 . YX22S 63



1 : 23 125/83 1LE1002-1AB5 3,0 1425 6,3 34 82 0,85 2,4 5,4 48 22

MOA 400-100 52 024 . YX42S



1 : 15 1 : 62 127/88 1LE1002-1AB6 4,0 1435 8,6 56 83 0,81 3,2 6,5 86,4 27

MOA 250-100 52 024 . YX32S 160 – 250 2 – 240 100



1 : 14 130 125/98 1LE1002-1AB5 3,0 1425 6,3 34 82 0,85 2,4 5,4 48 22

MOA 630-16 52 024 . YX72S 16 1 : 43 130/84 1LE1002-1BD2 700 4,65 15,5 70 0,66 1,6 3,3 32 29

MOA 630-20 52 024 . YX82S 20 1 : 47 260 120/78 1LE1002-1AC4 1,5 940 3,9 15,6 75 0,74 2,0 4,0 30 19

MOA 630-40 52 024 . YX52S 400 – 630 40 1 : 35 122/78 1LE1002-1AB5 3,0 1425 6,3 34 82 0,85 2,4 5,4 48 22

MOA 630-63 52 024 . YX62S 63



1 : 23 330 125/87 1LE1002-1AB6 4,0 1435 8,6 56 83 0,81 3,2 6,5 86,4 27

MOA 1000-20 52 025 . YX42S 630 – 1000 20



1 : 34 207/174 1LE1002-1CD2 3,0 715 8,3 34 77 0,68 1,80 3,9 72 44

MOA 1150-45 52 025 . YX02S 630 – 1150 45



1 : 21 210/161 1LE1002-1CC3 5,5 955 12,7 66 83 0,75 2,5 5,2 137,5 48

MOA 1220-63 52 025 . YX22S 630 – 1220



206/154

MOA 800-63 52 025 . YX32S 630 – 800 63



1 : 23 206/152 1LE1002-1CB2 7,5 1450 15,4 101 86 0,82 2,6 6,6 127,4 44

MOA 2000-16 52 025 . YX52S 16



1 : 60 1 : 54

MOA 2000-21 52 025 . YX62S 2 – 240 21



1 : 45 400

233/178 1LE1002-1CC3 5,5 955 12,7 66 83 0,75 2,5 5,2 137,5 48

MOA 2000-24 52 025 . YX72S 1000 – 2000 24



1 : 60

MOA 2000-34 52 025 . YX82S 34



1 : 43 229/174 1LE1002-1CB2 7,5 1450 15,4 101 86 0,82 2,6 6,6 127,4 44

MOA 2000-40 52 025 . YX92S 40



1 : 38

MOA 1600-70 52 025 . YXA2S 1000 – 1600 70



1 : 21 223/194 1LE1001-1CB6 11 1465 21 162 90 0,84 2,9 7,7 208 64

MOA 2000-32 52 026 . YX02S 1250 – 2000 32



1 : 45 318/237

MOA 1850-42 52 026 . YX12S 1000 – 1850 42



1 : 35 318/241 1LE1002-1CB2 7,5 1450 15,4 101 86 0,82 2,6 6,6 127,4 44

MOA 4000-30 52 026 . YXA2S 2000 – 4000 30



1 : 48

MOA 3000-42 52 026 . YXB2S 1500 – 3000 42



1 : 35 1 : 134 400

332/255 1LE1001-1CB6 11 1465 21 162 90 0,84 2,9 7,7 208 64

MOA 4000-9 52 026 . YX22S 1 – 100 9



1 : 103 339/246 1LE1002-1CC3 5,5 955 12,7 66 83 0,75 2,5 5,2 137,5 48

MOA 4000-11 52 026 . YX32S 11



1 : 139

MOA 4000-14 52 026 . YX42S 2000 – 4000 14



1 : 103 335/242 1LE1002-1CB2 7,5 1450 15,4 101 86 0,82 2,6 6,6 127,4 44

MOA 4000-17 52 026 . YX52S 17



1 : 84 355/263 1LE1001-1CB6 11 1465 21 162 90 0,84 2,9 7,7 208 64

*) Production with this resistance transmitter only until the end of 2018.

Table 1 – Basic technical parameters and characteristics of actuator type MOA

for valves installed in crewed areas of nuclear power plants

3. Connection of actuators - with packing gland.

4. The table shows one force from the pair of forces acting on the diameter of the handwheel.

5. Weight in the numerator corresponds to design with cast iron casing, in the ratio - for design with aluminum casing.

The permitted tolerance of ± 5% from the value speciﬁed in the table, unless other teolerance is speciﬁed in the order or approved by

the customer.

6. Rated current is given for the voltage 400 V, 50 Hz. For voltage U = 380 V rated current In380 = In400 x 400/380.

Electro-

motor

rotation

speed

[1/min]

ELECTRIC MOTOR

Type

Nominal

output

[kW]

Rated

current

[A]

Break-

away

current

[A]

Effi-

ciency

[%]

Power

factor

[cos ϕ]

Ratio

of breakaway

current

to nominal

current

Ratio

of break-

away

torque

to nominal

torque

Breakaway

torque

[Nm]

Electric

motor

weight