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DR45AT-1100-00-000-0-000P00-01通讯板
DR45AT-1100-00-000-0-000P00-01通讯板
DR45AT-1100-00-000-0-000P00-01通讯板
PLC编程语言与一般计算机语言相比,具有明显的特点,它既不同于语言,也不同与一般的汇编语言,它既要满足易于编写,又要满足易于调试的要求。目前,还没有一种对各厂家产品都能兼容的编程语言。如三菱公司的产品有它自己的编程语言公司的产品也有它自己的语言。但不管什么型号的其编程语言都具有以下特点图形式指令结构:程序由图形方式表达,指令由不同的图形符号组成,易于理解和记忆。系统的软件开发者已把工业控制中所需的独立运算功能编制成象征性图形,用户根据自己的需要把这些图形进行组合,并填入适当的参数。在逻辑运算部分,几乎所有的厂家都采用类似于继电器控制电路的梯形图,很容易接受。如西门子公司还采用控制系统流程图来表示,它沿用二进制逻辑元件图形符号来表达控制关系,很直观易懂。较复杂的算术运算、定时计数等,一般也参照梯形图或逻辑元件图给予表示,虽然象征性不如逻辑运算部分,也受用户欢迎,明确的变量常数:图形符相当于操作码,规定了运算功能,操作数由用户填人,如等中的变量和常数以及其取值范围有
简化的PLC程序结构:的程序结构通常很简单,典型的为块式结构,不同块完成不同的功能,使程序的调试者对整个程序的控制功能和控制顺序有清晰的概念
4.简化应用软件生成过程:使用汇编语言和语言编写程序,要完成编辑、编译和连接三个过程,而使用编程语言,只需要编辑一个过程,其余由系统软件自动完成,整个编辑过程都在人机对话下进行的,不要求用户有高深的软件设计能力。强化调试手段:无论是汇编程序,还是语言程序调试,都是令编辑人员头疼的事,而的程序调试提供了完备的条件,使用编程器,利用和编程器上的按键、显示和内部编辑、调试、监控等,并在软件支持下,诊断和调试操作都很简单。
总之的PLC编程语言是面向用户的,对使用者不要求具备高深的知识、不需要长时间的专门训练。
一、前言
当前,可编程控制器(PLC)作为一种成熟稳定的控制器,以的稳定性、可靠性、抗干扰性和编程简单、容易掌握等特点在工业控制领域得到了越来越广泛的应用。在控制系统中,PLC作为主控设备,与控制对象中的各种输入信号(如:按钮、接近开关、编码器等检测信号)和输出设备(如继电器线圈、电磁换向阀等执行元件)相关联,随着控制系统的复杂程度和控制设备增多,PLC需要的输入输出点数也大量增加,这就有必要通过采用各种方法对I/O点进行优化,来减少系统占用I/O点数使用数量,提高I/O的利用率,降低硬件使用成本,下面以西门子PLC为例从软件和硬件两个方面进行探讨。
二、软件方法
1. 单按钮控制启动/停止
通常情况下,PLC控制的外部设备至少要有一个启动和一个停止按钮作为输入信号来控制程序的运行和停止,因此至少需要两个输入点,在点数紧张的情况下可采用单按钮控制进行优化,将节省下的点留作扩展功能。
图1为PLC的外部接线,SBl接输入I0.0,Q0.0接继电器输出,通常情况下,继电器应反向并联一个二极管。
图2中,输入信号I0.0第一次短暂闭合,在正向脉冲指令下,辅助继电器M0.0输出一个周期的脉冲,则使网络3接通,输出Q0.0并实现自锁,输入信号I0.1第二次闭合,则网络2接通,使辅助继电器M0.1接通,常闭点M0.1打开,使网络3断开,输出Q0.0停止输出。
除了上述的方法外还可以采用计数器,R/S指令,寄存器等方法实现。图3为采用R/S指令方式的方法
2. 典型问题和解决方法
在实际运用的过程中,如果对PLC的运行原理不了解或理解的不够透彻,那么在程序的编写上很容易出现问题,左图也为单按钮实现启动/停止的梯形图,但在实际的调试中确是不可行的,达不到为我们预期的效果,通过与图2的对比我们发现:在网络1上少一个正向脉冲指令,这个指令是关键。这样我们就清楚问题的所在:由于I0.0.接通的时间比一个扫描周期的时间长,有时为N个或N+1个,要达到我们的目的每次都是奇数才可以,所以导致调试时的不成功,因此加一个正向脉冲指令可解决这个问题。同样如果将图2中网络2和网络3颠倒,其结果是Q0.0没有输出,原因是:在一个扫描周期内,网络2和网络3先后接通,然后将运算结果存人映像寄存器当中,所以就不会有任何的输出
在R/S方法中,容易出现的问题是锁存器的R/S端不能采用图5这种结构,系统会提示错误,所以只能是图2中的结构,才能正确执行
上述是用单触点实现启动/停止方法中比较常见的典型问题,尤其是初学者容易出现,这些问题虽然不大,但往往都是关键,如果在设计和调试中考虑到这些因素的存在,那会减少错误和缩短调试的周期。
三、硬件方法
1. 优化输入点数
在某些应用场合下有“自动控制/手动控制”的要求,并且在运行过程中,自动和手动不会同时进行,这样就可以将自动和手动按照不同的控制状态分组接入PLC输入端,可减少输入点,提高输入点的利用率,图6中的示例节省了50%的I点,相当于输入点数扩充了一倍
其中SA为手动/自动切换开关,SBl,SB2,SB3为一组输入,SBl0,SB20,SB30为一组输入。
在某些联锁情况下,如果PLC内部不采集该触点信号的状态,可采用物理联锁的方式进行,即硬件连接上进行联锁(不必每一个开关量都接到PLC的输入端),也可在程度上减少输入点数。
2. 优化输出点数
除了优化输入点数外还可优化输出点数,对系统整个运行过程中,输出状态完全一样的执行元件可以采用并联的方式,但要注意负载的功率情况,通常情况下采用继电器加续流二极管。此外还可以采用三八线译码器等方法,但需采用外部元器件,操作略微复杂一些。
四、结论
上述的几种方法虽然比较简单,但切实可行并且容易掌握,在不同的PLC中实现的途径略微不同,但基本思路都是一致的,通过对系统的优化可以进一步提高I/O的利用率,节省输入和输出点的数量,减少PLC的体积,降低硬件成本,具有很高的实用价值。
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【主营产品】
1:Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。
2:Invensys Triconex: 冗余容错控制系统、基于三重模件冗余(TMR)结构的现代化的容错控制器。
3:Westinghouse(西屋): OVATION系统、WDPF系统、WEStation系统备件。
4:Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、
MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、
Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
5:Schneider Modicon(施耐德莫迪康):Quantum 140系列处理器、控制卡、电源模块等。
6:ABB:工业机器人备件DSQC系列、Bailey INFI 90等。
7:Siemens(西门子):Siemens MOORE, Siemens Simatic C1,Siemens数控系统等。
8:Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
9:XYCOM:I/O 、VME板和处理器等。
10:GE FANUC(GE发那科):模块、卡件、驱动器等各类备件。
11:Yaskawa(安川):伺服控制器、伺服马达、伺服驱动器。
12:Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
13:Woodward(伍德沃德):SPC阀位控制器、PEAK150数字控制器。
14:工业机器人系统备件。
llen-Bradley Model: 100-A30NZ*3 Starter, Series B
Klockner Moeller: DIL00M4-G Starter w/11DILM Aux. Module
Schneider Electric Model: LC2D129B7 Reversing Contactor W
EAO Model: 01-121.25 Push Button Switch, White Ready
EAO Model: 01-121.25 Push Button Switch, Blue Run
EAO Model: 01-121.25 Push Button Switch, Yellow Ind.
Hampton Product Bi-Directional Option PCBA, PN: 1806
Hampton Product Bi-Directional Option PCBA, PN: 1806M
Torrington Bearings : CRS-14 7/8" Cam Follower. New Old Stock
Cutler-Hammer Model: QBHW1020 Quicklag Circuit Breaker W
Glentek Model: GM 1510B Servo Motor. P/N: GM1510-5-01000000. New Old Stock
Siemens Model: 6EP1333-1AL11 SITOP Power 5 Power Supply. DC 24V DC
Cutler Hammer Model: C10CN3 Motor Starter w/ C320KB2 Auxiliary Contact
Siemens Model: 6ES 158-0AD00-0XA0 Profibus DP/DP Coupler w/ 6ES7 972 Cable
ABB Model: BFE HE 10/40-3E Terminal Interface Module. Unused Old Stock
Allen Bradley Model: 500-BOD94 Contactor
SQUARE D 9080 GK6 SERIES B TERMINAL BLOCKS QTY (37) UNUSED OPEN BOX
Siemens Model: 3RH1131-1BB40 Contactor with 3RT1916-1BB00
Cutler-Hammer: GFCB115 Ground Fault Circuit Breaker. New Old Stock No Box J
Dalton Gear Company: OSD-225 Torque Limiter. ? Bore. New Old Stock J
Fuji Electric Model: CP32E/25N Circuit Breaker. 25 Amp, 250V
Paragon 42PN0040 Gear Head with Extras
Togi Model: ATK-100 Direct Mounting Terminal Block
Lot of Square D Model: B6.90 Thermal Units, Qty. 2
Carlingswitch Model: DA1-B0-34-610-121-C Breaker. New Old Stock
Lot of Veris Industries 721 "Hawkeye" Analog Sensors
Telemecanique Model: LR2-D1312 Overload Relay.
Telemecanique Model: LR2-D1316 Overload Relay.
Telemecanique Model: LR2-D1314 Overload Relay.
Siemens Model: 6GK1 500-0AA00 Busterminal RS485. SINEC L2
Telemecanique Model: LR2-D1308 Overload Relay.
Telemecanique Model: LR2-D1306 Overload Relay.
Allen-Bradley Cat. #: 193-A4E1 Overload Relay. Series A
Siemens Model: 52BAJ Contact Block. New Old Stock. No Box
Square D Class: 9065, Type: AR0-1R Thermal Overload Relay. New Old Stock
Lof of Siemens (3) 3TH2040-0AK6 & (1) 3TH4040-0A
Allen Bradley Model: 1305-KBA06 Dynamic Brake. K
Siemens Model:1P 6ES7 151-1AA04-0AB0 Profibus Module. New Old Stock. No Box
Klockner-Moeller Model: P1-25 Emergency Switch
Square D Model: LBA363206 Power Distribution Block. Series 9080.
Lot of Allen Bradley Cat. # 100-F Contact Blocks, Series A. Qty. 3 W
Phoenix Contact Typ UM Microstep Motor Controller
Allen-Bradley Cat. # 1492-SP3C040 Breaker. Series C.
Oriental Motor: SS21-UL Control Pack w/ IDEC Base
Allen-Bradley Cat. # 1492-SP3C160 Breaker. Series C. W
Allen-Bradley Cat. # 1492-CB3-G100 Breaker. 10A. Series B. W
Allen-Bradley Cat. # 1492-CB2-G050 Breaker. 5A, 1?HP. Series C. W
Allen-Bradley Cat. # 1492-CB2-G050 Breaker. 5A, Series B. W
Allen-Bradley Cat. # 1492-CB2-G200 Breaker. 20A, Series B. W
Allen-Bradley Cat. # 1492-CB2-G120 Breaker. 12A, Series B. W
Allen-Bradley Cat. # 1492-CB2-G200 Breaker. 20A, Series B. W
Electroid Model: 142 BEC-26C-8-8-6V-L Break Clutch.
Oriental Motor: SS21-UL Control Pack w/ PCB Assembly
ABB Type: S261 B6-230/400 Single Pole Circuit Breaker
Fuji Electric Co. Model: SG32 Earth Leakage Breaker w/
Graham Transmissions: 176B6014 Varispeed 2000 DC Contr
ABB Type: S271 K10 240/415 Single Pole Circuit Breaker
ABB Type: S261 B10 230/400 Single Pole Circuit Breaker
ABB Type: S271 K16 240/415 Single Pole Circuit Breaker
Siemens Catalog Number: GB141 Ground Bar Kit. New Old Stock
Siemens Model: 5 TE 3 16A 250V Single Pole Circuit t Breaker
Siemens Model: 5 TE 7 16A 230V Single Pole Circuit t Breaker
Siemens Model: 4NC5121-0CC20 Current Transformer
SQUARE D Class: 9065, Type: C01R Therm. Overload Relay. New Old Stock
Allen Bradley Cat #: 700DC-M310*. MB310, Series A W2
Moeller Model: DIL00M Starter / Contactor w/ 22D DIL M Aux. Unit
Klockner Moeller Model: Z0a-3.7 Overload Relay
Superior Electric: BP30-10GN Test Connector. New Old Stock
Square D Class: 8910 Contactor. 600 VAC Max.
ABB Model: 003755920 Cable. LA100/HE10-40/2XOMN 20/153. Unused Old Stock
Klockner Moeller: DIL00M4-G Starter / Contactor
TORQUE GEAR REDUCER TYP Z 20 Md MAX 2500 NCM i 190 NEW
Siemens Model: 3RH1140-1BB40 Contactor with 3RT1916-1BB00
Oriental Motor Model: SS31MA-J Control with Base
Oriental Motor Model: 2RK5GK-CE Reversible Motor
Sprecher+Schuh Model: CT3-0.62 Thermal Overload Relay
Mixed Lot of Square D Overload Relay Thermal Units
Allen-Bradley Cat. No. 700-C1 Contact Cartridge, Series A. New Old Stock
Lot of Togi 35 Position Terminal Blocks
WESTINGHOUSE Series C HMCP 3 Amps 3 Pole 600VAC =
Cutler Hammer: HM2P250K5M01 Circuit Breaker. 250A, 2 Pole, 600V. 250VDC W1
Cutler-Hammer: C25DND325A Definite Purpose Contactor. 3 Poles, 25A, Open Sty W
Altech Corporation 1GU2 Manual Motor Controller, G 2A
Altech Corporation 1GU10 Manual Motor Controller, G10A
Altech Corporation 1GU5 Manual Motor Controller, G 5A
Altech Corporation 1GU25 Manual Motor Controller, G25A
CAMCO FERGUSON 92C85797020000 IM-pAC SPEED INDEXING CONTROLLER W
Altech Corp. 1GU05 Manual Motor Controller, G 0.5A
F&K DELVOTEC P/N: KRT-01086 SMI X-Y STEPPER MOTOR BOARD
Allen Bradley Cat #: 500F-AOD920 Starter, with 595-A. Series B
Set of Allen Bradley 100-A09NZ*3 w/ 199-MCA1 Interlock
Allen Bradley Cat #: 190-MN, Series: A w/ 190-T11-11, Series: A & Base W2
Encoder Products (EPC): 220C Hollow Shaft Encoder
Load Controls Model: UPC, Universal Power Cell
Square D Model: H321N Safety Switch w/ (3) FRN-R-15 Fuses. 30A, 240V AC
Square D Class 2510, Type: MCG3 Manual Starter. 3 Phase, 200/230, 380/460 V AC
Eaton / Cutler-Hammer Model: 10250T Contact Block
Eaton / Cutler-Hammer: 8530A-6501 Output Device Relay
BOSCH SCHWENKANSCHLAG 3842184750 NEW
Allen Bradley 800T-D Momentary Switch. Series T.
Square D: Class: 9007, Type: DA-1 Lever Arm. 2?" Long. New Old Stock
ALLEN BRADLEY 1492-SP3C060 SER C 6 AMP CIRCUIT BREAKER
ALLEN BRADLEY 1492-SP3C040 SER C 4 AMP CIRCUIT BREAKER
Motion Control Products Centent, Model: CN0165. Genltly Used
ALLEN BRADLEY 1492-SP2C040 SER C 4 AMP CIRCUIT BREAKER
Danfoss Type: CH-16 Contactor with Danfoss Type: TI-16C Overload Relay
Superior Electric Model: A201053-41 Phase Shifting Cap
Allen-Bradley Cat. # 1492-CB2-G050 Breaker. 5A, 1?HP. Series B.
ORIENTAL MOTOR 3RK15GN-A REVERSIBLE MOTOR 15WATT 100V 0.42/0.45A
Siemens Model: 6ES7901-0AE00-0XA0 5M USB Cable. New Old Stock
Heinemann AM3-A3-A 3 Pole Breaker, AM3--A3-0015-02E
Lot of Togi ATK-20 Direct Mounting Terminal Blocks. 2
Hitachi Earth-Leakage Circuit Breaker, Model: EX50B
Fuji Electric Model: EG53A Circuit Breaker. 40A.
Lot of Telemecanique Model: LA4KC1B Contactor Suppressors. New Old Stock
Allen-Bradley Cat. # 1492-SP3C400 Circuit Breaker. 3 Poles, 40A. Series C.
Allen-Bradley Cat. # 1492-SP3C020 Circuit Breaker. 3 Poles, 2A. Series C.
Allen-Bradley Cat. # 1492-SP3C060 Circuit Breaker. 3 Poles, 6A. Series C.
Allen-Bradley Cat. # 1492-SP2C040 Circuit Breaker. 2 Pole, 4A. Series C.
Fuji Electric Model: EG33A Circuit Breaker. 20A.
Fuji Electric Model: SRCa361-0/X Contactor.
Fuji Electric Model: 26 Magnetic Contactor. P/N: SC-1N/S.
Fuji Electric Model: CP32D Breaker. 30A
Fuji Electric Model: 13 Magnetic Contactor. P/N: SC-0/C.
Electroid Model: BEC-42C-0-8-90V-H Clutch. New Old Stock
Allen-Bradley Cat. #: 193-EB1DB Overload Relay. Series B
Allen-Bradley Cat. # 1492-FB3C30-L Fuse Holder. Series A.
Danfoss Model: 176G7310 Remote Kit, 2 Meter
Square D Catalog Number: SDSA3650 Secondary Surge Arrestor. 650VAC Max.
Allen-Bradley Cat. # 1492-FB2C30 Fuse Holder. Series A.
Siemens Model: 5SX25 (C10) Circuit Breaker with 5SX9100HS Auxiliary Contact
ABB Model: 1SNA021053R1000 BF0M-16-TF Interface Module
Fuji Electric Model: 65 Magnetic Contactor. P/N: SC-3N/S.
Fuji Electric Model: 19 Magnetic Contactor. P/N: SC-4-1/C
Fuji Electric Model: EG63A Circuit Breaker. 60A.
Square D Model: DPA 23 SER. A 35 AMP. DEFINITE CONTACTOR *W2
Graham Transmissions: 27121 Speed Control Parts Kit
Siemens Model: 3RT1016-1JB42 Starter Contactor
Lot of Allen-Bradley Cat. # 140M-C-A Auxiliary Contacts. Series A. Qty. 2 W
Sprecher + Schuh Model: CS4C-22Z Motor Starter
Telemecanique Model: LC1 D18 10 Contactor w/LA 8 DN 20
Moeller Model: PKZM0-4 Manual Motor Controller *
Moeller Model: PKZM0-1,6 Manual Motor Controller *
Square D Type: SK5271N, Class 9070 Transformer Diconnect. W1
Moeller Model: FAZ-2-B20 Circuit Breaker *
Sprecher + Schuh Model: CA3-16-10 16 amp Contact
Moeller Model: FAZN-B16-2 Starter / Contactor
Oriental Motor: SS21-UL Control Pack with Omron 11PFA Base
Klockner-Moeller Model: DIL0052d Starter with Z0a-6.7IL M Aux. Gentlly Used
Hitachi Earth-Leakage Circuit Breaker, Model: ES-50B
Siemens: 6ES7193-4CA50-0AA0 Universal Terminal Module. Qty. 5. New Old Stock
Lot of EAO Model: 704.950.1 Lamp Holders. Qty. 2. New Old Stock J
Allen Bradley Cat. #: 592-B0V169 Overload Relay. Series B =
Torque Systems MT-2110-003KJ DC Servo Motor, PN: 135-
Klockner-Moeller Model: P1-32 Emergency Switch
Moeller Model: FAZ-L6A Starter / Contactor.
Moeller Model: AZG-25A Starter / Contactor.
Sprecher + Schuh Model: KTA3-25 Motor Protector.
Cutler Hammer: C306DN3 Circuit Breaker With H2001 Overload Heater Elemet
Sprecher + Schuh Model: KT3-25-A3 3 Pole Motor Protector Supply Block
Moeller Model: FAZ-2-B10 Starter / Contactor
AEG Model: SH04 Motor Contactor.
Siemens Model: 5SY6304-7 / 5SY63MCB-C4 Breaker. 400V, 3 Pole.
Siemens Model: 5SY6202-8 / 5SY62MCB-D2 Breaker. 400V, 2 Pole.
Siemens Model: 5SY6106-7 / 5SY61MCB-C6 Breaker. 230/ 400V, 2 Pole.
Oriental Motor Model: SS31MA-J Control without Base
Allen Bradley Model: 700DC-MB400* Contactor, Series A
ALLEN BRADLEY 800T-N51 CLUSTER PILOT LIGHT LENS NEW
Siemens Model: 3TH2040-0BA4 Contactor
Traco Engineering TB5-5 Speed Controller in Hoffman w/
Sprecher + Schuh Model: KTA3-25 Motor Protector. New Old Stock
Siemens BERO Inductive Sensor, Model: 3RG1613-0AB00. 65 V DC pnp. 0.2A
Allen-Bradley: 700-F400A1, Series B Control Relay
Cutler-Hammer: HFD3040L Series C Circuit Breaker. 40A; 3 Pole. New Old Stock
Cutler-Hammer: H2023-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Cutler-Hammer: H2004B-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Cutler-Hammer: H2011B-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Cutler-Hammer: H2015B-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Cutler-Hammer: H2022-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Cutler-Hammer: H2008B-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Lot of Cutler-Hammer Model: E22B1 Contact Blocks, 2
Siemens Model: 3TF44 Contactor w/: 3TY7561-1B & 3TY7561-1A Aux. W2
Siemens Model: 3UA59 00-1G Contactor. 4-6, 3A W2
Allen Bradley Cat #: 700DC-MB220* Contactor. Series A
ABB Model: 017926920 Communication Cable. 1SNA179269R2000. New Old Stock
Allen Bradley Cat #: 195-MA04 Auxiliary Contact Adder Deck. Series A W2
Lot of Allen Bradley Cat #: 199-MSMD1 Surge Supressor. Qty. 2. Series A
SIEMENS 3TH2022-OBB4 RELAY =
Cutler-Hammer: H2002B-3 Freedom Series Heater Pack. Set of 3. New Old Stock
Oriental Motor: SS21-UL Control Pack w/o Base
Siemens Model: 3VU1300-1ML00 Circuit Breaker
Mars Model: 35006 Motor Overload. New Old Stock.
Merlin Gerin Model: DPNa vigi. Multi9 C16 Circuit Breaker.
Klockner Moeller Model: DIL EM-10-G Contactor
Allen-Bradley: 193-BSB 16 Overload Relay, Series B
Allen Bradley Model: 100-A09ND3 Contactor. Series B
Cutler-Hammer Model: E22E2 Red Extd PB. New Old Stock
Sprecher + Schuh Model: CT3-32 Thermal Overload Relay O
ITT Neo-Dyn: 200P183C Adjustable Press. Switch. Incr. Range:1K - 10K PSIG
Allen Bradley Model: 500-BOD93 Contactor
Square D Model: 8501 Industrial Control Relay
Square D Model: FA36100 Molded Case Circuit Breaker
ALLEN BRADLEY 700-CP1 SERIES A. New Old Stock
Allen-Bradley: 500-AOD950 w/ 595-A Auxiliary Contact
Tazmo Model: E0R05-17895B Pulse Control Board
ABB Model: CBK-EP1 Enclosure with ABB CE4T-10R-02 Emergency Stop Pushbotton
Square D Cat. No.: FA62407010 Circuit Breaker
Reliance Electric IMPakPlus VS Drive
Allen-Bradley Cat. #: 193-A4D1 Overload Relay. Series A
Allen-Bradley Cat. #: 193-EA1EB Overload Relay. Series B
Danfoss Type: T1 16C Overload Relay.
ALLEN BRADLEY 1492-CB1H070 B CIRCUIT BREAKER 7AMP NEW
Danfoss Type: CI-16 Contactor with Danfoss Type: CB-NO Aux. Contactor
Danfoss Type: CI-9 Contactor
Danfoss Type: C-10 Contactor with Danfoss Type T16C Overload Relay
Slo-Syn / Fico Trim & Form Systems Motor Control Cable
Sprecher + Schuh Model: CS4-P Auxilary Contact. New Old Stock. No Box
Moeller Model: DIL00A M AC Contactor / Starter
Benedikt & Jager Model: K16 A21s Circuit Breaker
Oriental Motor Model: 2RK6GN-AWM AC Magnetic Brake Motor O
Oriental Motor: 2RK6GK-AM w/ Oriental Motor: 2GK30K Gearhead Servo Motor O
Lot of Siemens Model: 5SX21 Mini. Circuit Breakers. K
Lof of Siemens Starters and Thermal Overload Relay K
Parvalux Gear Motor. Ref: SD 1C SiS / 618561 / 7D
Allen Bradley Cat #: 700DC-M400* Miniature Relay. Series A
Varitap Model: VP-05C Potentiometer with Light Star 605A-S Guage