A20B-2902-0390/02A厂家直销

A20B-2902-0390/02A厂家直销

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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。

SIEMENS 6SE3117-3DC40 MICROMASTER 6SE3 117-3DC40
Cours Zenitel bleumarine TR-2 3005020058
Allen Bradley 2711-K5A5 /H PanelView 550 Monochrome/Keypad/RS232(DH-485), Read
Lenze 322.1 326884 Indicazione Digitale 3221
Siemens C 50 , 5SY6350-7 Circuit breaker, 5SY63,50A , C50 400v, 3-POLE
Load Controls, Inc. Power Cell / Transducer PH-3A-R _ PH3AR _ 460V _ 40A _ 0-10V
sew eurodrive servomotor PSF211/N/EK03 DS56M/B/TF
siemens c20 5SY42 Disyuntor 5SY4220-7 2 POLOS C 20A T=70, 10kA
Berger Lahr WS5-5.28100 SERVO MOTOR CONTROLLER WS5-5.281-00
Reliance Electric 3FR4042 FlexPak 3000 1.5/3HP Regen Drive w/ 60 Day Warranty
Allen Bradley 1734-IB8S /A 2010-2011 POINT Safety Digital Input Module 24V Qty
USED Allen Bradley 1746-IV16/C SLC 500 Input Module
Fuji Electric Circuit Breaker BU-KDA3250_BUKDA3250_BU-KDA_250 AMP, 3 POLE, 240 V
*NIB* Flex Link Pallet Stop XKPD 32x15 _ Flexlink _ XKPD32x15
Siemens 6ES7 321-1NL00-0AA0
indramat TVD 1.2-08-03 servo alimentation TVD1. 08/02/03
IFM PN7004 Sensor de presión Elecrónico Presostato
New Allen Bradley 1408-EM3A-ENT /A PowerMonitor 1000 EM3 Serial/Ethernet
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Daikin Piston Pump V15 A1R-40 _ V15A1R40 _ V15 AIR-40 _ V15AIR40
New Allen Bradley 1747-L40A /C SLC 500 Processor DH-485 1K 24-In/16-Out
Okuma BL-Motor BL-MH101E-12S _BLMH101E12S_ Encoder ABS-FB-D2048_ABSFBD2048 _9331
Recif S.A Lot dispositif d'alignement microcontr?leur 104775 micro controlleur
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USED Allen Bradley TLS-3 GD2 QD Guardmaster Switch
Nefit MBC2 Multiple boiler controllore automatico
Cisco WS-C3750E-48PD-EF Catalyst 3750E Switch 48 PoE GE 2 10GE X2 1150W
Rexroth Brueninghaus Hydromatik Hydraulic Pump A10VSO18DR/31R-PKC62N00
Allen Bradley 2711-K5A8 /F PanelView 550 Monochrome/Keypad/DH+/RS232-Prnt, Read!
GAST Regenair Pump R1102 max pressure 28.5 with Motor 5KCP19KG413AT 1/8 hp
New Sealed Allen Bradley 1756-EN2T /D 2016 ControlLogix ENet Bridge FW 10.007
SIEMENS MICROMASTER 6se9211-4da40 Netzfilter 6SE32900DA870FA1
Siemens micromaster VECTOR 6SE3221-0CC40 Frequency converter MMV220/2
Nord 0,37 kw 127 min motorreductor sk 01f-71 Gearbox
Nachi Modular Valve OCP-G01-W1-20 OCPG01W120
General Electric RM645 Circuit Board 44A297098-G01 _ 44A297098G01 _44A717615-001
TEKO Kühlstellenregler Wurm DPC921 K?ltetechnik
Sodick CNC Rire Ram EDM Circuit Board _ RL DRIVE 4-E _ MDK 21HB
RELIANCE AUTOMAX 57C560 0-57625-C PC3000 PROCESSOR BOARD NEW IN BOX W/ 57C563
Mitsubishi AC Spindle Controller FR-SE-2-7.5K-BN401U _ FRSE275KBN401U _ SE-PW
Phoenix Contact FLKM14-PA-AB/1756/IN/EXTC 2302874 VARIOFACE Front Adapter Input
Fusion 038035 038035 038043 Rev N 455 Controller Board
FESTO VALVE MANIFOLD CPV-10-VI _ CPV10VI
Monarch Cortland Circuit Board E49198 _ E49191 Rev A _ Off of Monarch VMC75
FESTO CPV-14-VL Valve terminal CPV14VL cpv14 20831
Allen Bradley 1734-RTB /A Replacement IEC Screw Terminal Block Qty
ABB 225 AMP CIRCUIT BREAKER_TYPE: EH_TF2225_TF3225
ALLEN BRADLEY BULLETIN 1326_ AC SERVO MOTOR 1326AB-B520E-21-K5
IFM Moniteur FR-1 DD2001 FRéquence speed Impulsion Système d'exploitation neuf
Allen Bradley 194R-NN200P3 /B IEC Disconnect Switch 200A Non-Fused
New Sealed Allen Bradley 2711P-T7C4D2 /A PanelView Plus 700 Touch/Enet/RS232
Heidenhain 360732-09 ERO 1420 drehgeber 360732-XX encoder
Demag DKUN2-250-k-v1f4 cordino a catena con 500kg 0, 5t Ganci
USED Allen Bradley 2755-DD1A Dual Headed Bar Code Decoder Series B Rev. F
Allen Bradley 2707 2707 MVMNT
Siemens 6ES5431-4UA11 6ES5 431-4UA11 S5 431-4 Digital Input Module
USED Dolan Jenner SS950-48000 SafeScan 9 Light Curtain Receiver 48"
Siemens 6SE3226-8DJ40 MIDIMASTER Vector MDV3700/3 Drive 380-500V AC/3PH/72A/50HP
Siemens 5SJ3216-7 Miniature circuit Breaker 5SJ32 MCB circuit Breaker C 16A 2P
indramat MAC 090B-0-JD-3-C110-A-1S01 SERVOMOTEUR MAC090B-0-JD-3-C110-A-1S01
New Sealed Allen Bradley 20BD3P4A0AYNANC0 /B PowerFlex 700 AC Drive 3.4A 480V
A20B-2902-0390/02A厂家直销
Okuma Spindle Motor Yaskawa Encoder TGD C ___ GEELR-K
New SICK WLG12-V537 Retro-reflective Light Grid WLG Series 18-30V DC
Fanuc Input Circuit Board Module PCB A16B-1310-0530/20E _ A16B1310053020E
Brinkmann Pumps Immersion Pump_TYPE: ZT090090-MK+250_ZT090090MK250_EMCOTURN 342
Mitsubishi MC116B Circuit Board CIN624A997G53C REV C MC116 MAZAK * CRACKED FRAME
BRIDGEPORT OPERATORS MANUAL TURRET MILLER WITH MODEL "J" MILLING ATTACHAMENT
Siemens 5SJ3520-7 Miniature circuit breaker 5SY7J35 MCB C 20A 1+N
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INA DRS30105 Seal carrier, for ZARF, Zarf DRS 30105
SICK WS9-2D430 Through-beam Photoelectric Sensor Transmitter M12 Qty
HOKUYO Auto Counter AC-NHB4 Panel Mount _ 10CPS_ DC24V _ ACNHB4
SIEMENS 1FN3 100-4SA00-0AA0 /1FN100-4SA00-0AA0 Motore lineare
Allen Bradley 2711P-RDT7C /C 2015 PanelView Plus CE 700 Color Touch Screen
Fuji Electric AU- 51B1-03 5181-03 Connector Terminal Block
*NEW Brown & Sharpe Tool Holder X Slide CNC 157 5140 163_157-5140-163_1575140163
USED GE Fanuc IC693CMM302D Enhanced Comm Module 90-30
Demag DSW 3TF 8133 PROTECTIVE , DSW3TF8133
*NIB* Boston Gear F724-50-B5-G Speed Reducer 50:1 Right-Angle Worm Gear Box
siemens c20 5SY63 Disjoncteur 5SY6320-7 3 P?LES C 20A
New ROSEMOUNT 3051 CG4F22A1JS1I5QPQ8 Pressure Transmitter
Mazak 337-NFX 7252 Ball Screw Axis MP-4200 Ballscrew _ MP4200 _ P033
SIMENS 1P 6SE7021-3TB51 Simovert MC Wechselrichter
Honeywell_HW_Operator Panel_TCD475-2_TCD4752_KD-22036 (1) SDR
Thalheim Encoder incremental ITD 40 A 4 Y23 1000 R NI D2SR12 M 20IP65 312716
Carl rehfuss 0,06 kw 2.7 min réducteur mécanique ssm131fu-56s
Lenze 8200 vector 00458131 55kw Convertitore di frequenza 45478367 inverter
A20B-2902-0390/02A厂家直销
CNC Ball Screw Ballscrew 63.5" OAL with 54.5" Travel _ T5299 _ 78621
MANNESMANN REXROTH Pneumatico PC-120 MR
Mazak 31506008130 _ 211460000672 _ Pulse Generator A860-0200-T011 _ A8600200T011
New Sealed Siemens 6GK7342-5DA03-0XE0 2013 6GK7 342-5DA03-0XE0 CP342-5 Processor
Lenze E82EV751_4B200 Convertidor de frecuencia 8200 Vector E82EV7514B200 0,75 kw
Reliance Electric 3RA2004 Brushless AC Servo Controller w/ CBRU-1/16 Circuit
SIEMENS SIMATIC S5 6ES5 944-7UA22 115U CPU 944 6ES594347UA22
Bosch Hydraulic Relief Valve # 9810231440 ___ 081WV06P1V1016WS024/00
original p5pwup82504 PC 4
sew motor con engranaje reductor 0,37 KW 87 Min
Coudre Motoréducteur 0,25 KW 85 Minimum FREIN RF40DT71C4BM ETOILES MOTORéDUCTEUR
Mitsubishi YZC201B-3 Operation Board Door Panel Mazatrol M32B
Kl?ckner Moeller MI4-101-KE1 Display and Control unit Operator Panel MI4101KE1
NEW Nachi 6312ZZE Shielded Deep Groove Ball Bearing
marschner K105/45,5 BV4424 160VA transformador transformador sek 24v I=6, 66A
NEW IN BOX - TIMKEN 581/572B PRECISION TAPERED ROLLER BEARING SET_A17015
Allen Bradley 1785-L60B/E and 1785-ENET/A Coupled M01
NEW ASCO 068100 Solenoid Valve Rebuild Kit
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A+B Todas Bradley SPS DC Tarjeta de entrada Input Módulo 10-30V 1771-IBN C
Siemens 6ES7972-0AB01-0XA0 Diagnostic Répéteur 6ES7 972-0AB01-0XA0
Siemens 6SE7 012-0TP50 6SE7012-0TP50 SIMOVERT MASTERDRIVES MC Inverter 1HP, Read
Siemens disjoncteur différentiel 40A disjoncteur 30mA 5SM3614-0
New Sealed Siemens 6ES7 432-1HF00-0AB0 6ES7432-1HF00-0AB0 SIMATIC S7-400 Output
CTC Parker PM1-5E1-XD5 Touch Monitor 15" 25FT NITR DC XLNT w/ 60 Day Warranty
siemens simatic 6GK7443-1EX11-0XE0 NET CP ETHERNET 6GK7 443-1EX11-0XE0
Allen Bradley 2711-K5A16 /H PanelView 550 Mono/Keypad/RS-232 FRN 4.48
Mennekes 16A DUO mécanique verrouillé secteur 5100AC 16 A-6h 380-415V
New CISCO2921-V/K9 Router 3-Port GE 4-EHWIC 1-SM PVDM3-32 512D/256CF
New Sealed Allen Bradley 1783-US05T /A 2013 Stratix 2000 Switch Unmanaged 5 Port
Nippon Gerotor Motor Trochoid Pump TOP 212 HA EMVB_TOP212HAEMVB
Siemens Simovert P 6SE2127-3AA21
schmersal AES 1235 aes1235
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Siemens Miniature circuit Breaker 5SY62 MCB circuit Breaker D 40A
Schneider PCMCIA Module Modicon Premium TSXSCY21601_SV: 2.7_RS 485MP+PCMCIA
HAGER residual current circuit breakers 40A 0.3 A ESC463S Installation contactor
Carl rehfuss 0,06 kw 2.7 min réducteur mécanique ssm131fu-56s
A20B-2902-0390/02A厂家直销
DSM Circuit Board PCB IO-1.0 _ IO10 _ 8303 _ OPTO IO-S 070 771
Cincinnati Circuit Board 3-531-2189A Rev. F _35312189A
Asca SC B32Q B3 electroválvula solenoide válvula
Contraves MT 30Z4-37 servomoteur MT30Z4-37 DC MOTOR
New Allen Bradley 1756-IT6I /A Pkg 2012 ControlLogix Isolated Input 6-Pt
New Sealed Allen Bradley 889PS-M3JB-5 /B Cordset Cable to M8 Male 3-Pin 5m Qty
siemens SSA81. 1 Electrical Actuator electromotive Actuators Actuator
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Allen-Bradley 1771IBD series B Input Module
Allen Bradley 2711P-T10C4A2 /A PanelView Plus 1000 Touch/Enet/RS232 128MB AC
USED Fanuc A16B-2200-0853/03B Axis Control Board
50 X st siemens 8WH3000-0AF01 Via la borne 0,5-2,5 mm nourrir through ter