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咨詢熱線--17750626260
3)從控制速度上看，繼電器控制系統(tǒng)依靠機(jī)械觸點(diǎn)的動作以實(shí)現(xiàn)控制，工作頻率低，機(jī)械觸點(diǎn)還會出現(xiàn)抖動問題。而PLC通過程序指令控制半導(dǎo)體電路來實(shí)現(xiàn)控制的，速度快， 程序指令執(zhí)行時間在微秒級，且不會出現(xiàn)觸點(diǎn)抖動問題。
4)從定時和計(jì)數(shù)控制上看，電器控制系統(tǒng)采用時間繼電器的延時動作進(jìn)行時間控制，時間繼電器的延時時間易受環(huán)境溫度和溫度變化的影響，定時精度不高。而PLC采用半導(dǎo)體集成電路作定時器，時鐘脈沖由晶體振蕩器產(chǎn)生，精度高，定時范圍寬，用戶可根據(jù)需要在程序中設(shè)定定時值，修改方便，不受環(huán)境的影響，且PLC具有計(jì)數(shù)功能，而電器控制系統(tǒng)一般不具備計(jì)數(shù)功能。
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廈門莫格電氣自動化有限公司
聯(lián)系人：張芳（銷售工程師）
手 機(jī)：17750626260
Q Q：177763184
郵 箱：177763184@qq.com
傳 真：0596-6514751（請備注張工收）
網(wǎng) 址：http://www.mogget.cn/
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5)從可靠性和可維護(hù)性上看，由于電器控制系統(tǒng)使用了大量的機(jī)械觸點(diǎn)，其存在機(jī)械磨損、電弧燒傷等，壽命短，系統(tǒng)的連線多，所以可靠性和可維護(hù)性較差。而PLC大量的開關(guān)動作由無觸點(diǎn)的半導(dǎo)體電路來完成，其壽命長、可靠性高，PLC還具有自診斷功能，能查出自身的故障，隨時顯示給操作人員，并能動態(tài)地監(jiān)視控制程序的執(zhí)行情況，為現(xiàn)場調(diào)試和維護(hù)提供了方便。
CASCADE PUSH/PULL LIFT TRUCK ATTACHMENT 45E-LB-300
YAJIMA KOGYO 10" VIBRATORY BOWL PARTS FEEDER NFSIS-0010
CLEVELAND TRAMRAIL 75AMP 600 VOLT TYPE ST
ZIMMERMAN HANDLING SYSTEMS CONTROL KIT 15300-12 NIB
YAJIMA KOGYO 10" VIBRATORY BOWL PARTS FEEDER NF-SSS-0005
DENGENSHA 16" VIBRATORY BOWL PARTS FEEDER AF-VNS-H0G25-10?-DLH
AURORA CRANE 12000lbs. WINCH ACC-12 W/ ROLLER STATOR MOTOR, NO CABLE
GREENLEE 3548 MOBILE WORK BOX, 23.0 CUBIC FEET, 48" X 24" X 35"
UNIFIED INDUSTRIAL 1000LBS. HOIST TROLLEY DET 113-C 105493
REXNORD TROUGHING TRAINING IDLER 42-C6310-0
SERVICE ENGINEERING INC BULK RATE VIBRATORY FEEDER BOWL 238636
TOTER INCORPORATED POWER UNIT 3078-00-3003 W/ 1755/1420RPM 5HP LINCOLN MOTOR
YAJIMA KOGYO 10" VIBRATORY BOWL PARTS FEEDER NFSIS-0006
FMC 115V 60HZ MAGNET, 215498-K
REXNORD CONVEYOR IDLER ROLLER 48-FC6041-17
LYON 10-DRAWER SAFETY
BALL NUT, AN-15,NIB
PALMGREN 6.5" OPEN HEAVY DUTY VISE
AERO-MOTIVE 3.6-6.8KG RETRACTOR BALANCER, 15FGG
INGERSOLL-RAND 10-18KG / 22-40LB CAPACITY, 2000MM / 6.6FT LIFT BALANCER B41
REXNORD TROUGHING TRAINING IDLER 42-GC6312-01
CHICAGO PNEUMATICS 2100 AGER TOOL BALANCER, 45-60 lbs
AERO-MOTIVE 3.6-6.8 KG CAPACITY BALANCER, 15F-LR
GLEASON ECONOLINE TR2030AA RETRIEVER WHEEL, NNB
METTLER TOLEDO CHECK WEIGHING CONVEYOR MODEL 8142
CASCADE CORP. LIFT FORK ATTACHMENT PLATE 125D-RR
REXNORD TROUGHING TRAINING IDLER 36-GC6056-01
INGERSOLL-RAND ARO 550LB SERIES 7700 INDUST. ROLLER CHAIN HOIST, PART LABEL
REXNORD TROUGHING TRAINING IDLER 42-GC6310-01
BROWNING 26 TOOTH SPROCKET 060026
VITAX LEVOMAT 250KG CRANE LIFT AID VLK25-0334
REXNORD 60" CONVEYOR RETURN TRAINING IDLER BD-5052-13
KNAACK STORAGE CABINET JOBSITE CHEST JOBMASTER 68, BROKEN HINGES
REXNORD TROUGHING TRAINING IDLER 36-GC6200-02
7.5" OPEN HEAVY DUTY MACHINE VISE
REXNORD 15-
REXNORD TROUGHING TRAINING IDLER 42-GC6302-01
LYON METAL PRODUCTS 45 GAL. FLAMMABLE SAFETY CABINET CAT. NO. 5444, FADED
GARDNER DENVER COPPER MOTOR TOOL 921220
HERCULES INDUSTRIES DRUM HANDLING ATTACHMENT, PART LABEL
DODGE 30 X 40 CONVEYOR PULLEY HE 50 104965
VITAX LEVOMAT 250KG CRANE LIFT AID VLK25-0469
K & K WELDING PRODUCTS 300 Amp CABLE AND WELDING GUN
GREENLEE 3548 MOBILE WORK BOX, 23.0 CUBIC FEET, 48" X 24" X 35"
FMC CONVEYOR ROLLER E4620-36 A37850 1732-269-A
CHICAGO PNEUMATICS 155-180LBS, SUPER DUTY BALANCER 2200 BPER
STORAGE CABINET, 36.5" X 18.5" X 72", NO LABEL
ERIEZ MAGNETICS 115V 54.9A SUSPENDED ELECTROMAGNETIC SEPARATOR MODEL SE 7435
INGERSOLL-RAND 150LBS @ 100PSI LIFTING AND BALANCING UNIT BW01508B00
CREFORM BOLT ON FIXED CASTER W/ 136 X 30 WHEEL, K-130
WHX 4885 RIV CHAIN, 12" PITCH, ROLLER 1.75" DIA. 3.25"W, PLATE 2.5"H, PIN 1.25"D
REXNORD TROUGHING TRAINING IDLER 42-GC6056-01
ADB 30,000lb NICKEL PLATED HOIST RING X83200-C-3.8-NI?CKEL *RUST*
INGERSOLL-RAND 150LBS @ 100PSI LIFTING AND BALANCING UNIT BW01508C
28' X 9" MEDIUM DUTY GENERAL PURPOSE CONVEYOR BELT B1200COS
MSI 50,000LBS. TRANS-WEIGH CRANE SCALE MSI 6260C D01
REXNORD WELDED FLAT TOP CONVEYOR CHAIN WHX 132 / WHXR 132R, 20-
CASTERS & EQUIP. CO. MED/HEAVY DUTY COLD FORGED WHEEL RUBBER/ POLYOLEFIN NNB
STANLEY 33"H, 30"W, 28"D VIDMAR SENTRY 100 STATIC PROOF CABINET
REXNORD TROUGHING TRAINING IDLER 36-GC6312-02
INGERSOLL-RAND 200LBS AT 90PSI LOAD POSITIONER, PART LABEL
INDUSTRIAL MAGNETICS INC. TRAMP METAL PLATE MAGNET EMD19A037
REXNORD TROUGHING TRAINING IDLER 42-GC6312-02
LOCTITE CORPORATION PUMP-A-BEAD II 850 ml DISPENSE SYSTEM 986000, PARTS/REPAIR
KNIGHT 100PSI 225LBS. AIR BALANCER MODEL KBA 225-073 99373
ROPER WHITNEY PEXTO 22 GA CAPACITY SLIP ROLL FORMER MODEL 381 D
CM COLUMBUS McKINNON 2-TON 8 F.P.M. 1HP ELECTRIC HOIST MODEL R, NO PENDANT
YALE 1 TON HOIST, PARTS/REPAIR
MOORE 110/120V 60HZ 4A PRESSURE SEALER MODEL 4100, PARTS/REPAIR
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