PLC的扫描周期包括上电后初始处理、共同处理、上位链接服务、外设服务、运算处理、I/O刷新。
PLC发展到今天，已经形成了大、中、小各种规模的系列化产品。可以用于各种规模的工业控制场合。除了逻辑处理功能以外，现代PLC大多具有完善的数据运算能力，可用于各种数字控制领域。近年来PLC的功能单元大量涌现，使PLC渗透到了位置控制、温度控制、CNC等各种工业控制中。加上PLC通信能力的增强及人机界面技术的发展，使用PLC组成各种控制系统变得非常容易。
考虑到循泵系统对机组的重要性，PLC采用双机热冗余主机进行控制。经过多方调研，对各种双机热冗余的PLC进行性能价格比较后，采用美国GEFANUC系列90－30系列的PLC为双冗余控制设备。其具有以下优点：
1.程序设计
A20B-2900-0151
A06B-1723-B120
A06B-0113-B175

Berger Lahr WDP3-318.0801 RS 06 POSTTTIONiersteuerung 65331800403 Top Zustand
Furnas Controls 1Ph 2Pole 1Hp 120/240V Starter OEM 14CP12AA81
KLINGER / MICRO-CONTROLE MOTORIZED X LINEAR STAGE
Square D EGB24020 circuit breaker warranty 2pole 20amp 480/277v
Circuit Board 204839011155-100 0246
Lennox 15M49
(12) 1Gb Ram Memory (2) Samsung M395T2953EZ4-CE66 (2) EBE10RD4AGFA-4A-E & other
EATON XTPR001BC1 STARTER & XTCE032C10 SERIES CONTACTOR MANUAL MOTOR PROTECTOR
Flowserve Durco Mark 3 Centrifugal Pump, MK3 STD, 1K1.5X1LF-82 OP/5.32, D4 CF8M
Fanuc Power Supply A06B-6120-H011 A06B6120H011 with Warranty
Kollmorgen Seidel Servomotor 6SM 71-M 3000 max 3000 5,1kW 15,6A Neuwertig
York Controls 1/3Hp 230V 1Ph 1100Rpm 48 OEM S1-024-35894-000
HP 6038A AUTORANGING DC POWER SUPPLY 60V 10A ~ AGILENT KEYSIGHT
Siemens ITE BF240 circuit breaker 2p 40amp GFI ground Fault type BLF NEW
3372232 Whirlpool Dishwasher White Handle
Lennox LB-98714A
FERRAZ SHAWMUT A4BY2000
Yaskawa AC Servo Motor SGMP-08AWYR32
Topworx GO Leverless Limit Switch 11-32528-DBA
Fanuc PCB Board A20B-3900-001 A20B3900001
KEB F5 05F5S1A-ZE01 Frequenzumrichter 240V, 2,3A, 0,9KVA, 0-1600Hz max
Johnson Controls Comfancoil Bacnet 0-10Vdc OEM TEC2646-4
IDEAL HA-1400 950 STRIPMASTER DIE-TYPE BLADE SET
Siemens ITE QJH23B200 circuit breaker 200amp 240v 22k AIC type QJ New warranty
FORD OEM Rear Door-Lock Actuator Motor 2F2Z16218A42BA 1995-1998 ECONOLINES
OEM ICP Heil Tempstar Comfort Maker Emerson 1/5 HP FAN MOTOR HC37GZ003B
Altronix ACM8CB Access Power Controller Board - 8 PTC Outputs
GE Fanuc AC Servo Motor a6/3000 A06B-0128-B677#7000 3 Phase 200Hz 114V 7.5A 3000
HONEYWELL HEAVY DUTY MICRO SWITCH LS2D4K
Siemens Board 462008.7701.01 w/top board 6SN1114-0AA01-0AA0
Fanuc Operatot Panel A02B-0091-C141 Board Type A16B-1310-380/04B
Honeywell 1 1/4 Str 16.0Cv 3-8Psi Str OEM VP512A1767
ACOPIAN 15EB100 AC TO DC POWER MODULE 15V 1A
Challenger CD3150W 3pole 150amp 240v circuit breaker 1 year warranty!
AIHARA ELECTRIC CO. YS-1K Transformer 200/220V; 50/60HZ; S. 100/110V
AO Smith 100110256
Rockwell Automation 173285 REV 01 Capacitor Board Assembly
MAC 6333D-511-PM-592DA Solenoid Valve PME-592DAAG
THERMO ELECTRON CORP. LEVELPRO CONTINUOUS GAMMA LEVEL SYSTEM, MODEL#: 9740A-02
Lyndex Nikken Live Tool Holder MZMP47-ER32 MZMP47-ER32X-OFF no collet
Siemens Operator Panel OP20/240-B 6AV3520-1EL00 Top Zustand
Reznor Products Vertical Vent Assembly OEM 205895
ANRITSU MP1760A MUX UNIT 10 - 20 GHZ OPTION 01
Siemens QJ23B150 circuit breaker 3pole 150amp 240v 1year Warranty!
Bunn 12203.0014 12203.0014 RWS1 Satellite Brewer Warmer (For Use with 1GPR & 1.5
Suntec J4PA-E1000G
6-cans Rust-Oleum 203024 Caution Yellow Inverted Marking Paint Lot of (6) cans
MIXED LOT OF 2 ASCO RED-HAT SOLENOID VALVES 8261 6 8262D22
AVTRON M56 ENCODER
Dualube Lube Pump
SEW Movitrac MC07B0150-503-4-00 FSC11B DFP21B 400V 15KW Top Zustand TESTED
Heil Quaker 3/4Hp 208/230V1Ph 1140Rpm Ccw OEM 1065751
FACTUM ELEKTRONIK NICAM 728 ENCODER NC200A/IC DUAL CHANNEL SYSTEM BG VER E
GE Spectra SRPE100A90 90amp circuit breaker rating plug new in box Warranty!
LEGRIS 3109 56 11 Male Elbow, 90 Deg, 1/4, MNPT x Tube, PK10
Refrigeration Solenoid Valve, 7/8 In
Lot of 3 Mechanical Lug CAT#500MCM-2 CMC PV2-500 CU9AL QUANITY OF (3)
Versa Solenoid Valve SEVPS-4512
VELAN 1-1/2" 150# MODEL B CF8M GATE VALVE F07-00646-13GX
Guide Pot P/daewoo DMV-400 Daewoo/Doosan !
HEIDENHAIN Umrichter UV 140 Id.Nr. 335 009-02 400V 67A UV140 Top Zustand
Honeywell 3/4" Mv Step Open Nat.Gas Valve OEM VS820C1100
FUJIKIN FWBR SERIES FINE ~ 0.39 - 0.59 KPA UHP VALVE
Siemens FXD63B150 3pole 150amp 600v circuit breaker FD New in Box FXD63B150L
Gould Shawmut TRS100R Time Delay Fuse FRS-R-100
Honeywell L6081A1036
HP Smart Array P800/512 16-Port SAS RAID Controller | 012698-002 501575-001
Lot of 5 Schrader Automation 31500-7018 Coil Scovill
Victaulic 5" Steel Spacer / Gasket Ring, Style# 741 ***LOT of (13)***
Fanuc Fan Unit A06B-6044-C605 A06B6044C605 !
Leuze electronic Lichtschranke SLS 78/2 SE-24V Top Zustand
Honeywell Webstat Controller OEM W7350A1000
MEGGER 230425 AC/DC HIGH-POT TESTER 0 TO 4 KV AC 0 TO 5 KV DC BIDDLE
Square D LCL36400 8041 circuit breaker 3p 400amp LCL364008041 type LC Warranty!
Acme Electric AE010100 AE Series, 100 VA, 120 X 240 Primary Volts, 24 Secondary
Bacharach 24-3004
2 XINRUILIAN Axial AC Fans RAH1238S2-C AC 100-125V 0.17/0.18A Fan Assembly
Cutler Hammer Eaton D100 Expansion Chassis D100ERA20 Series A1
ARMSTRONG Y STRAINER 3/4"
Plate Back P/Puma V400 Series PV400109 L51412053 Daewoo/Doosan !
Fanuc Servo Amplifier A06B-6127-H207 aiSV 40/40HV 5,7kw Neuwertig
McQuay Daikin 1/3Hp 56Frame Ball Bearing Mtr OEM 107654201
HIPOTRONICS HC3-AT-AD 3KV AC-DC HIPOT TESTER WITH REMOTE CONTROL
Square D PQ4203 30amp 240v 3ph 4 wire bus duct busplug disconnect busway Ser 2
FORD GENUINE OEM BOLTS W500593-S439
Rheem 51-23012-31
Lot of 4 Buss Bussman Fuse Holder H60030-2CR 30 amp 600 V w/ Fuses FRS-R-1-1/4
Lot of 2 Fanuc BMD88A1 A03B-0808-C010 BMD88P1 A03B-0808-C200 Digital Interface
NORGREN PILOT OPERATED REGULATOR 11-008-130
Fanuc Servo Amp Unit A06B-6093-H154 A06B6093H154 With Warranty
Siemens Simodrive 6SN1118-0NK01-0AA2 Ver. B unused UNBENUTZT
Carrier Products 1/3Hp Cond Fan Motor 1100Rpm OEM HC41AE232
TTC ACTERNA 41800 DATA INTERFACE MODULE 2.048M Nx64k
Siemens 17CP92BF1191 Nema size 0 combo starter series enclosure New!
ACT Ideal 30-072 300 Volt Thermoplastic Twist On Wire Connector Blue Pack of 100
Lennox 56L50
Lot of 2 Buss R25030-2CR Fuseholder 30 Amp 250 Volt 2 Pole
Eaton Cutler-Hammer C320WC27 IT Wiring Connector link
Mettler Toledo pH 2100 e Transmitter pH 2100/2H
Fanuc Board With Daughter Boards A16B-2203-0031/03B A16B22030031
Rexroth INDRAMAT Eco Drive DKC03.1-040-7-FW FWA-ECODRV-PDP-03VRS-MS TOP ZUSTAND
A.O. Smith 1Hp 200-230/460V 1140Rpm Motor OEM FC3106F
LINE TOOL CO K MODEL SLIDE TRANSLATION STAGE - B
Square D EDB24035 2pole 35amp 480v circuit breaker New in box 1 year warranty!
Genuine OEM GE WB31M20 GE Range Stove Drip Pan Burner Bowl Black 6 Inch PS244375
Lennox 606458-02
Square D LC36600, 600 Amp 600 Volt Circuit Breaker- USED
LOT OF 3 Allen BradleyTerminal Blocks 2 - 1492-CD2 & 1 - 1492 -CD8
TELEMATIC TRANSMITTER SURGE PROTECTOR TP48-N-NDI
Yaskawa Varispeed AC Inverter Drive CIMR-PBEB1PST B1P5T0B