Related Manuals for ZPA Pecky, a.s. MODACT MOA
Summary of Contents for ZPA Pecky, a.s. MODACT MOA
- Page 1 Electric multi-turn rotary actuators for nuclear power stations outside active zones Type num b ers 52 020 - 52 02 6 2/20...
- Page 2 ZPA Pečky, a.s. is certified company in accordance with ISO 9001 as amended.
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Page 3: Work Environment
........................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. -
Page 4: Important Notice
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. - Page 5 Fig. 2 – Control board 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.
- Page 6 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.
- Page 7 Micro-switches schematic diagram 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 Numbers in circles correspond to terminal numbers on the 35 –...
- Page 8 Terminal numbers Valve Valve open closed on terminal board 14-15 SQC1 16-17 (PO) 14-15 SQC1 16-17 (PO) SQT1 18-19 (PZ) 20-21 SQT1 18-19 (PZ) 20-21 22-23 SQC2 (SO) 24-25 SQC2 22-23 24-25 (SO) 26-27 SQT2 28-29 26-27 (SZ) SQT2 28-29 (SZ) Close Open...
- Page 9 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).
- Page 10 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.
- Page 11 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.
- Page 12 Description: 46 – Driving rubber collar 43 – Indicator shaft 47 – Locking screw 44 – Bottom “closing” indicator 48 – Fixing screw 45 – Top “opening” indicator 49 – Top cam with opening Fig. 8a – Position indicator 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.
- Page 13 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 Wheel on transmitter – gears (version with current position transmitter) Table for setting the working stroke of position resistive transmitter CPT 1AAE Type number...
- Page 14 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.
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Page 15: Packaging And Storage
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. -
Page 16: Installation
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. -
Page 17: Maintenance
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. - Page 18 Table 1 – Basic technical parameters and characteristics of actuator type MOA A C T U A T O R Voltage ratio Opening Range Actuator Weight of the Maximum 1, 2 output Type number moment of setting actuator with Grease force from the shaft...
- Page 19 for valves installed in crewed areas of nuclear power plants E L E C T R I C M O T O R Ratio Ratio Nominal Electro- Rated Break- Effi- Power Breakaway Electric of break- of breakaway output motor current away ciency factor...
- Page 20 Connecting dimensions of electric actuators MODACT MOA, t. no. 52020 - 52026 SHAPE C SHAPE E ø d ø d ø d ø d ø d ø d ø d ø d ø d Type designation and type numbers MOA 160...
- Page 23 Modification for rising spindle Guard adapter ø d3 3x M4x10 ČSN 02 1155 Sealing ø d1 Box cap ø d2 ø d4 Type number Dimension 52 021 52 025 52 024 52 020 52 022 52 026 ø d 1 ø...
- Page 24 Internal wiring diagrams of MODACT MOA actuator connection Without position transmitter P1001 Position transmitter: resistance 100 Ω P1006 Position transmitter: current 4 – 20 mA P1009 Position transmitter: current 4 – 20 mA with power supply (only for aluminum design)
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Page 25: Setting Procedure
Transmitter 4 – 20 mA The converter is delivered as a separate mounting block for MOA OC and MOA actuators with resistive transmitter position. It transforms the signal of the 100 Ω resistive transmitter to a unified signal of 4 – 20 mA. The supplied converters are made by Treston, in the 222-224 RIPa/SO/BT III/ZOV design. -
Page 26: Working Conditions
INDUSTRIAL SIGNAL CONVERTERS TO MOUNT ON DIN TS-35 (IP 20) rail Converter for resistive transmitters with current output 4 – 20 mA 222-224 RIP The converters are designed to convert signal from the resistive transmitters to standardized current output of 4 - 20 mA. Description The signal from the variable resistor is brought to the input of the converter. -
Page 27: Measuring Ranges
temperature dependence (ČSN IEC 770) < 0.008 % / 1 V < 0.003 % / 100 Ω influence of load resistance supply voltage 12 to 30 VDC (reverse polarity protection) maximum value of load 600 Ω resistance in current loop at Vs = 24 V DC 1 000 Ω... - Page 28 38,8 22,5 Lock...
- Page 29 Interconnection of actuators MOA and MOA OC with a Control block – Example of connecting to the MOA actuator SWITCHING BLOCK Transformer 52 020 8,7,6 other 4,3,2 designs...
- Page 30 KEY TO SCHEMES BQ 1 resistive transmitter Connect J4 Block of local control SQFC1 torque switch "open" (MO) J4.1 (+24 V) control phase SQFT1 torque switch "closed" (MZ) J4.2 (D) phase for remote (regulator function) SQC1 position switch "open" (PO) J4.3 (LZ) phase for locally close SQT1...
- Page 31 SPARE PARTS LIST MOA ACTUATORS Power and control part (five-year operation) Drawing or Type Part name standard No. number and ČJK 52 020 Seal ring 125x3 ČSN 029281.2 Sealing between power transmission box and 2327311049 flange with gears Sealing 224612300 Terminal board cover sealing Seal ring 130x3 ČSN 029281.2...
- Page 32 Drawing or Type Part name standard No. number and ČJK “Git seal” ring 60x75x8 ČSN 029401.0 Sealing of output shaft of power transmission box 2327352090 “Git seal” ring 22x32x7 ČSN 029401.0 Hand wheel shaft sealing 2327352034 Seal ring 95x85 ČSN 029280.2 Seal inserts with "Git Seal"...
- Page 33 Seal ring 200x3 ČSN 029281.2 Sealing of control box cover 2327311044 Seal ring 90x80 ČSN 029280.2 Sealing of output shaft in control box cover 2327311011 Seal ring 32x2 ČSN 029281.2 Sealing of local position indicator glass 2327311037 Sealing 224611130 Sealing below vertical spindle hole cover of valve Eye sight 4-62847 Local position indicator cover...
- Page 34 NOTES...
- Page 35 Explosion proof electric multi-turn actuators MODACT MOA Electric multi-turn actuators for nuclear power stations application outside containment MODACT MOA OC Electric multi-turn actuators for nuclear power stations application inside containment MODACT MPR Variant Electric rotary (160°) lever actuators with a variable output speed MODACT MPS Konstant, MPSED Electric rotary (160°) lever actuators with a constant output speed...
- Page 36 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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