ZPA Pečky MODACT MTN 15 Mounting Instructions

Electric linear (pull-rod) actuators

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Elect ric L in ear (Pu ll-ro d )

actu ato rs

Type num b ers 52 442, 52 443

4/15

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Summary of Contents for ZPA Pečky MODACT MTN 15

Page 1 Elect ric L in ear (Pu ll-ro d ) actu ato rs Type num b ers 52 442, 52 443 4/15...
Page 3 APPLICATION The MODACT MTN, MTP actuators are used for remote two-position or three-position control of the valves by a reverse rectilinear motion. The MODACT MTN, MTP Control actuators are fitted with an electronic position controller. In association with the valve exhibiting a suitable control characteristic, they form a position servo-loop. The output pull-rod of these actuators is automatically brought into a position corresponding to the input signal value of the controller.
Page 4 OPERATION MODE, SERVICE LIFE OF ACTUATORS Operation mode According to ČSN EN 60 034-1, actuators can be operated in S2 load category (the course of load is shown in the picture). The operation time at +50 °C shall be 10 minutes, the average mean load thrust value shall be below or equal to 60 per cent of the maximum tripping thrust F v .
Page 5 Noise Acoustic pressure level A max. 85 dB (A) Acoustic power level A max. 95 dB (A) Tripping thrust At the factory, the tripping thrust has been adjusted within the min./max. range giving in Table 1, according to the customer’s requirements. If no tripping thrust adjustment is required the actuator is adjusted to its maximum tripping thrust.
Page 6 Position transmitters The MODACT MTN, MTP electric actuators can be supplied without position transmitter 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 % max.
Page 7 Position indicator The actuator is fitted with a local position indicator. 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”.
Page 8 ELECTRIC PARAMETERS External electric connection a) 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 4 mm 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.
Page 9 Protection The actuators are fitted with one internal and one external protection terminal for ensuring protection against electric shock injury according to ČSN 33 2000-4-41. One protection terminal is also installed on the electric motor. The protection terminals are marked according to ČSN EN 60 417-1 and 2 (013760). If isn´t the actuator equipment with overcurrent protection when purchased is needed to ensure that the protection is added externally.
Page 10 Control units (Figs 2, 2a) a) Torque-limit switching unit (12) b) Signalling unit (13) c) Adjusting mechanism of potentiometer or gear wheel of current transmitter (14) d) Potentiometer position transmitter with mechanical position indicator or current transmitter of 4 to 20 mA without position transmitter (15) e) Position-limit switching unit (16) f) Anti-condensation heater (17)
Page 11 For control of the actuator at the site of installation, deblocking device consisting of deblocking switch and local control switch can be fitted, if required. Block of local control consists of two change-over switches. One is used to switch between remote and local control, the second is used to open or close the valve when the first switch is set to local control.
Page 12 Adjusting procedure of the torque-limit switching unit To adjust a different tripping torque from that adjusted at the factory, the procedure is the following: Loosen the lock nut 44 (see Fig. 3) and then the lock screw 25 (for the CLOSE direction) or 26 (for the OPEN direction). Place a screwdriver in the slot of the upper segment 23 or 24 and turn the segment till the slot in the segment 27 or 28 tallies with the respective scale graduation line.
Page 13 transmitter is sensed. The arrangement of cams and microswitches of the signalling unit is shown in Fig. 4. Shoulders of the cams 30 or 31 deflect the levers 34 and 35, which in turn control the microswitches 36 (SO) and 37 (SZ). When adjusting the signalling and position-limit switches and the position transmitter, the output shaft of the actuator should be moved to the position in which changing-over of the microswitches should take place or the required position of the position transmitter cursor should be reached.
Page 14 Numbers of terminals Open Close on terminal board 15-16 14-15 18-19 17-18 Open Close 21-22 20-21 24-25 23-24 Contact open Contact closed Operating diagram of position-limit switching and signalling switches the gear ratio of the adjusting mechanism, i.e., the angle of positioning the transmitter and the local position indi- cator is always 160°...
Page 15 Legend: 51 – Geared rocker arm 51 – Spring 53 – Rail with pins 54 – Adjusting pin 55 – Geared rocker arm 64 – Screw 65 – Adjusting lever Fig. 8 - Adjusting mechanism of the resistive transmitter Legend: 40 –...
Page 16 CPT 1A CPT 1A 2. Shift the output shaft to the position Open and set 20 mA using a potentiometer on the transmitter body. The potentiometer has a range of 12 revolutions and it has no stops so that it cannot be damaged by furtherturning. 3.
Page 17 Current position transmitter DCPT – setting 1. Set of end-limit positions Before starting the setting, verification must be carried out that the end-limit positions are within the range 60° – 340° of revolution DCPT. Otherwise, after setting, an error arises (LED 2x). 1.1.
Page 18 Parameter setting Position “4 mA” Set the actuator to required position (usually Closed) and keep the push-button 4 depressed until LED blinks. DCPT EHL elektronika v.č. 000106 Position “20 mA” Set the actuator to a required position (usually Open) and keep the push-button 20 depressed until LED blinks.
Page 19 d) Rotate the tripping rod 58 at an angle of 90°. As a result, the rod should shift out again. If this is not the case, turn the screw 56 or 59 by a small amount. e) Readjust the valve to the OPEN position by the required number of revolutions, making use of the actuator. f) Depress the tripping rod 58 again in the vertical direction and position it at an angle of 90°...
Page 20 ATTACHMENT TO A VALVE Place the actuator on the valve so that its output pull-rod can be connected to the output pull-rod of the valve. Attach the actuator to the valve and check the attachment by rotating the handwheel. Remove the terminal box cover and wire the actuator, according to the internal and external circuit layouts.
Page 21 Note: The Ciatim 221 lubricant is designed for the friction points of rubber bushings against metal surfaces, roller brake, the hub of an outer cogged wheel of a planetary-gear differential of actuators 52 442 (for locations of friction between the shaft and other surfaces). Moreover, the rectilinear mechanism 11 (Fig.
Page 22 Table 1 – MODACT MTN, MTP (Control) electric actuators – basic technical parameters, design Basic electrical equipment: 2 thrust-limit switches (OPEN - MO, CLOSE - MZ) 2 position-limit switches (OPEN - PO, CLOSE - PZ) 2 signalling switches (OPEN - SO, CLOSE - SZ) 1 potentiometer of 2 x 100 Ω...
Page 23 Table 2 – Connecting dimensions – specification of the 7th place of Type No. 52 442.xxxxx Design Design Character on 7th place Character on 7th place spacing of columns A (160 mm) spacing of columns B (150 mm) Aa1I Ba1I Aa1II Ba1II Aa1III...
Page 26 Dimensional sketch of linear transmission unit for MODACT MTN, MTP 40 electric actuators, Type No. 52 443.x2xxx – design with flange – non standard (other dimensions and designs of actuators are according to fig. 13 and 14) M20x1,5 A – A 4x ø13 ø80H8 ø105±0,2...
Page 27 Wiring diagrams of MODACT MTN, MTP electric actuators Legend: SQ1 (MO) – OPEN torque-limit switch CPT 1A – Analog adjustable current position transmitter SQ2 (MZ) – CLOSE torque-limit switch DCPT – Digitally adjustable current position transmitter SQ3 (PO) – OPEN position-limit switch DCPZ –...
Page 28 Wiring diagram of MODACT MTN, MTP electric actuators – terminal board P0938-E DCPT DCPZ 3-phase motor CPT 1A Open Close Outlet Control voltage position Wiring diagram of MODACT MTN, MTP electric actuators – connector P0940-E P0940-E DCPT DCPZ 3-phase motor 3f motor OTV/ZAV CPT 1A...
Page 29 Connector...
Page 30 List of spare parts of MODACT MTN, MTP actuators (for 5 years of operation) Drawing or ČSN Designation Application Standard No. 52442 Sealing ring 125x3 PN 02 9281.2 Packing between power gear box and flange with gears Sealing ring 130x3 PN 02 9281.2 Packing between control box and power gear box...
Page 31 Development, production and services of electric actuators and switchboards. Top-quality sheet-metal processing (TRUMPF equipment), powder paint shop. SURVEY OF PRODUCED ACTUATORS KP MINI, KP MIDI Electric rotary (90°) actuators (up to 30 Nm) MODACT MOK, MOKED, MOKP Ex, MOKPED Ex Electric rotary (90°) actuators for ball valves and flaps MODACT MOKA Electric rotary (90°) actuators for nuclear power stations...
Page 32 ZPA Pečky, a.s. tel.: +420 321 785 141-9 tř. 5. května 166 fax: +420 321 785 165 289 11 PEČKY, Czech Republic +420 321 785 167 www.zpa-pecky.cz e-mail: zpa@zpa-pecky.cz...

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