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系统在设计时应使水泵在变频器和工频电网之间的切换过程尽可能快,以保证供水的连续性,水压波动尽可能小,从而提高供水质量。但元件动作过程太快,会有回流损坏变频器。为了防止故障的发生,硬件上必须设置闭锁保护,即1Q与4Q,2Q与5Q,3Q与6Q不能同时闭合。
2 系统软件设计
控制系统软件是指用梯形图语言编制的对3台泵进行控制的程序。它对3台泵的控制,主要解决系统的手动及自动切换、各元件和参数的初始化、信号及通讯数据的预处理、3台泵的启动、切换及停止的条件、顺序、过程等问题。
当变频器输出频率达到频率上限,供水压力未达到预设值时,发出加泵信号,投入下1台泵供水。当供水压力达到预设值,变频器输出频率降到频率下限时,发出减泵信号,切除在工频运行方式中的1台泵。系统刚启动时,情况简单,首先启动一号泵即可。但考虑3台泵联合运行时情况复杂,任1台或2台泵可能正在工频自动方式下运行,而其他泵则可能在变频器控制下运行,因此必须预先设定增减水泵的顺序。即获得加泵信号后,按照1号泵、2号泵、3号泵的顺序优先考虑。获得减泵信号后,按照3号泵、2号泵、1号泵的顺序优先考虑。
为了防止故障的发生,软件上也必须设置保护程序,保证1Q与4Q、2Q与5Q、3Q与6Q不能同时闭合。在加减泵时必须设置元件动作顺序及延时,防止误动作发生。

New Allen Bradley 1794-ADN /C 2014 DeviceNet FLEX I/O 24V Media Adapter Module
MITSUBISHI MELDAS 5000CII INSTRUCTION MANUAL
Fanuc Module AID32F2 _ A03B-0807-C109 _ A03B0807C109 _ AO3BO8O7C1O9
Hobart Bros. Co. Circuit Board PCB_405714 REV. 2_ASSY NO. 374607
Mannesmann Rexroth Directional Valve 4WE6J61/EG24N9DK24L _ 4WE6J61EG24N9DK24L
USED ABB 3HAB2219-1 Main CPU Board DSQC 316 S4 M96
Mitsubishi PLG Encoder Retro SPA Board 2N831B122 AUB #E
Motorola MCP750HA-366A
BAUMüLLER DSG 45-S-S DSG45 Servomoteur BAUMüLLER
SIEMENS 132-0BH01-0XB0 , 193-0CA10-0XA0
Okuma OPUS7000 Super Main Board E4809-045-219-A _ 1911-2110-20-20 _ E4809045219A
Siemens Motor 1 FT6105-8AC71-1AB0 _1FT61058AC711AB0 _ No Z #
Murr 67057 Murr Electrónico Módulo De Diodo
Multilin 565 Relay Chassis w Feeder Management Processor 565-5-5-0-A
DOSAPRO MILTON 225350 POMPA Pompa di dosaggio 1 Pompa dosatrice a pistone
Siemens 6SE7 012-0TP50 6SE7012-0TP50 SIMOVERT MASTERDRIVES MC Inverter 1HP Qty
New Sealed Cooper Bussmann 350P09C HRC Fuse 350A 600V Qty
Circuit Board 181016-00 _ 18101600 _ 181O16-OO _ 181O16OO _ *UNKNOWN MFG*
euchner TZ1LE024MVAB Safety switches 083965
Okuma CNC Systems OSP-U100 OSP-U10 Lathe Mac Man Instruction Manual NC MacMan
Carlo Gavazzi DPB02CM48 Asymmetry Relay
AEG Aparato alimentador DNP 028 042.199860
New Sealed Allen Bradley 1746-NI4 /A SLC 500 High Resolution Analog Input Module
General Electric Air Conditioner 36-0616-104_360616104_36-O616-1O4_36O6161O4_R22
Mazak 320-ZS-500U Ball Screw Axis 53208400800 Ballscrew_7206B-5DBM_25TAB06FFB
DGD Circuit Board CBV 1.0 bs _ CBV10bs _ S 103007 _ S-103007 _ S103007
SEW Movidrive Fréquence MCF40A0015-5A3-4-00 onduleur 8267383
New Sealed Allen Bradley 1756-IF6I /A Pkg 2014 ControlLogix Analog Input Module
MAZAK YAMAZAKI ELECTRIC WIRING DIAGRAM MAZATROL T2_T3_DIAGRAM SET NO. 1423AWB
Lot of 4 NEW Allen Bradley 700-N5 Relay Accessory Ser D
Siemens 6SE7 012-0TP50 6SE7012-0TP50 SIMOVERT MASTERDRIVES MC Inverter 1HP, Read
s+b contr?le de la température 5400 5400-10-0-00-111-7-40-3 Thermostat digitemp
Powerbox Power Supply Kit PU40-31SC _ PU4031SC _ 71-09248-02 _ 710924802
SIEMENS 1FK7022-5AK71-1LH5 SERVOMOTORE SERVO MOTORE
Hermann CALL electrode relay HR-800
Allen Bradley 1769-OB32 /A CompactLogix 32-Point 24V DC Source Output Module Qty
Leuze MA10100 80751 MA 10 100
Mitsubishi Circuit Board PCB_MC031C_CIN624E860G53A REV B_C1N624E860G53A_109395
GE Fanuc IC620MDR014D Micro Programmable Controller 8 DC Inputs 6 Relay Out Read
New Sealed Allen Bradley 2711P-RDT7C /C 2014 PanelView Plus CE 700 Color Touch
USED Cedes AG USL800/S24 cegard / Robot Safety Control Module V3.20
Nachi Modular Solenoid Valve OCY-G01-W-Y-11 _ OCYG01WY11 _ 0CY-G01-W-Y-11
COSEL AVR-24 Power Supply AVR24 __ CNC
Grundfos Pump MTC2-40/4 U-W-A-AUUV_MTC2-40/4UWAAUUV_A4363444_P20748
New Sealed Pro-Face GP377-LG41-24V GP377 Series Graphic Control Panel Touch 24V
Motovario NMRV-P090 i=40 Motorreductor Gearbox NMRVP090
Siemens C 13 , 5SY3213-7 Circuit breaker, 5SY32,13A , C13 400v, 2-POLE
Showa Lube Unit MLA-03W_MLA03W_0.3 L/Min_4 L Res_USED - DIRTY
Allen Bradley 4100 Bulletin 4100-202-RA
Siemens 6ES7322-1BL00-0AA0 6ES7 322-1BL00-0AA0 S7-300 SM 322 Output Module, Read
Esam 0, 75kw Pompe à Vide
siemens 6GK5746-1ST00-2AA6 scalance W746-1PRO NEW
Oriental Induction Motor 5IK150A-TT2F_5IK15OA-TT2F_5IK150ATT2F_5IK15OATT2F_150W
siemens SSA81. 1 Electrical Actuator electromotive Actuators Actuator
PARKER HYDRAULIC VALVE_D1VW20DNYCF56 75_D1VW20DNYCF5675
KT SCSI Bus Adapter ASSY 1-21280 01 Rev 1 _ 12128001 _ 1-2128O O1 _ 12128OO1
USED Fujitsu MC6A-31CS FLM 600 OC3 Add/Drop Multiplexer Card Issue 4 FC9616SRC1
Rofin sinar 101110997 RCU LX500
Allen Bradley 17710BN SERIE B
New Sealed Allen Bradley 1769-BOOLEAN /A Compact I/O Boolean Control I/O Module
siemens MA20 5SY83 Interruttore magnetotermico 5SY8320-8BB08
DAI01厂家直销
KNICK DC ISOLATION 3310A2 1157676
NEW Inpro/Seal 1701-A-01738-0 Bearing Isolator
Bosch Rexroth Module 16DO 1070081858
5/8" Sandvik CAT30 End Mill Holder #30MM-VF3-EM5 Taper Tool CAT 30
Allen Bradley 2711P-T10C4D8 /A 2012 PanelView Plus 6 1000 Touch/Enet/RS232 512MB
Toshiba A/C Servo Motor RA10M _ WSB00200SXAA _ WSBOO2OOSXAA
SIEMENS Simatic S5 6ES5445-3AA12 6ES5 445-3AA12 reacondicionado
New Siemens 6GK7343-1CX00-0XE0 6GK7 343-1CX00-0XE0 SIMATIC S7-300 CP 343-1
Okuma GP/GA-36/47F Parts Book 2nd Edition _ CNC Cylindrical Grinders
Siemens 6ES7 313-1AD03-0AB0 6ES7313-1AD03-0AB0 SIMATIC S7-300 CPU 313
Siemens Brushless Servomotor_1FK6083-6AF71-1AG0_1FK60836AF711AG0_1FK6083_Dirty
finder 87.31.0.240.0000 Temporizador Recaída retrasada 873102400000
Mannesmann Demag 0,37 KW 1380 MIN UMF71BX-4Z Electric motor three-phase motor
Rexroth A2FM45/61W-VPB010 pompe hydraulique Pompe à pistons axiaux MNR 9411586
Siemens Sitop Power 10 6EP1334-1AL11 Rifornimento corrente 6EP113341AL11 E2
Siemens 3RT1344-1AB00 PROTECTIVE CONTACTOR 100A AC 24V
Okuma OPUS 5000II SVP CARDII Board E4809-436-017-C _ Okuma VMC MC-4VA 59120217
Bauer Motoréducteur 0,13 KW 27-110 minimum type k176099-11 testé
Fanuc PCB CIRCUIT BOARD A20B-0009-052_A20B0009052
USED Brown & Sharpe 80-410-214-2 CMM Machine Connector Board
EE66-VB5, Trasmettitori per velocità de aria trasmettitore E+E Elettromagnetismo
Parker Directional Valve D1VW1CNQWF 72 off a Okuma MC-5VA s/n 60100275
NEW Inpro/Seal 1987-A-M0046-0 Bearing Isolator
Siemens C 25 5SU1353-1WM25 Fi Miniature circuit breaker 30mA 25A magnetotermico
NEW Fafnir 2MM212WI DUL Super Precision Cylindrical Roller Bearing Set
festo CPV14-GE-MP-8 18265 Ilot de vannes CPV14-VI 18210
DAI01厂家直销
kleemann électronique Lambda creuser. 1 système de règles
SOLA CVDC DC POWER SUPPLY 28-1203-2 _ 4.5A IN 15A OUT _ 2812032 _ P/N 37361-0300
New Sealed Siemens 6GK7343-1CX00-0XE0 6GK7 343-1CX00-0XE0 SIMATIC S7-300 CP343-1
Giddings Lewis PiC900 32DC sortie 502-03674-00 neuf
*NIB* NSK Super Precision Bearing 7916A5TRDULP4Y
SIEMENS RLU210 Controlador universal Controlador
New Sealed Allen Bradley 150-C3NBD /B SMC-3 Motor Controller 3A 480V 100-240V AC
El o-matic F0200M EMERSON Pneumatic Actuator
mueller pompa idraulica tm 28/28 aggregato idraulico usato
BRIDGEPORT OPERATORS MANUAL TURRET MILLER WITH MODEL "J" MILLING ATTACHAMENT
41" Microguard Emitter MG-32-0F-AU_988019 _ MG320FAU_MG32OFAU_MG-32-OF-AU
Reliance Electric 1326AS-B440G-21 /A AC Servo Motor 460V 6.4nm 5000 RPM
imtech FC-2000
New Allen Bradley 440E-D13120 /B 440E Emergency Stop Device LRS3 2NC 2NO Qty
New Allen Bradley 1756-RM /B Pkg 2011 ControlLogix Redundancy Module
Traub Single Bar Hydro Feed Barfeed Type A Manual
USED Basler Electric 9146641100 Frequency Matching Card Rev. D
New Allen Bradley 1784-PKTX /A PCI Bus Communication Card DH+/DH485/RIO
Hirschmann Twisted pair Transceiver Mini-UTDE
reckmann termómetro de resistencia PT100
Allen Bradley 100-D250ED11 Contactor Series A 100D250ED11 New In Box
siemens Indicador de giro V23401-H2001-B201 GENERADOR DE FUNCIONES ENCODER
REXROTH VT3000-36a R900020298 AMPLIFICADOR VT3000 ,VT-3000-36a
Advantech Monitor Interface Panel CRT PPC-120T _ PPC120T _ PPC-12OT
Siemens C20 5SY42 Disjoncteur 5SY4220-7 2 P?LES 400v 20A
IFM PN7000 Pressure sensor Electronic Press button
Allen Bradley 6181P-15TPXPH /B VersaView 1500P Integrated Display Computer
LOVAL 1800W 230V 29510001 Cartouche de chauffage 1,8 kW Barrette chauffante
IHNE & TESCH 9404 406 41071 Temparaturregler 940440641071 Appareil de mesure pma
Siemens 6ES5700-8FA11 6ES5 700-8FA11 SIMATIC S5 Bus Module
NEW Timken 4595 200209 Roller Bearing Cone
CUBIGEL CL45TN3N Compressore Compressore-refrigerazione
SIEMENS SIMATIC NET CP 443-1 Advanced 1P 6GK7 443-1EX40-0XE0 Industriel Ethernet
SEW Eurodrive Movitrec 8208913 FRA 11
STM Gear motor 0,13 kw 124 Min worm gear RMI 28 PP gearbox
NEW Consolidated 33220 Precision Tapered Roller Bearing
Mazak Mitsubishi Board FX15C _ FX15 C _ BN624A405H01 Rev A _ BN624A4O5HO1
Siemens 6AV6 545-0BC15-2AX0 6AV6545-0BC15-2AX0 SIMATIC TP170B Touch Panel 6-in
DAI01厂家直销
Thalheim Dc Compteur de vitesse gène Arator KDT 3-2 S A4 Y51 300896 KDT3-2SA4Y51
Siemens C 25 , 5SY3025-7WM Interruttore magnetotermico 25A , C25 230v 1POL
HEIDENHAIN ROD 426 3000 ID 376846-MC 376846MC Encodeur codeur
TELEMECANIQUE Modulo di regolazione VW3-G46101 OPERATORE PANNELLO
USED Fanuc A16B-2202-0820/02B Auxiliary Axis Control Board RJ2
Siemens 6ES7318-2AJ00-0AB0 SIMATIC S7 6ES7 318-2AJ00-0AB0
New Furnas H6 Thermal Overload Heater Element 0.59 - 0.66A, Qty
Allen Bradley 1794TB3 SERIES A
Siemens c20 5SY3020-7WM Disjoncteur 1 p?les C 20A
Festo SFAB-10U-HQ6-2SA-M12 Durchflusssensor 565385
NEW SKF N 319 ECM Single Row Cylindrical Roller Bearing
euchner TZ1RE024RC18VAB CI826 Interrupteurs De Sécurité TZ