可編程邏輯控制器或 PLC 在當(dāng)今的各種流程和制造行業(yè)中無處不在。PLC 最初旨在取代機電繼電器系統(tǒng)，以便為修改控制系統(tǒng)的操作提供更簡單的解決方案。無需重新連接大量繼電器，只需從 PC 或編程設(shè)備快速下載，即可在幾秒鐘內(nèi)更改控制邏輯。

PLC 是一種工業(yè)級數(shù)字計算機，旨在執(zhí)行控制功能，尤其適用于工業(yè)應(yīng)用。

今天的大多數(shù) PLC 都是模塊化的，允許用戶添加各種功能，包括離散和模擬輸入和輸出、PID 控制、位置控制、電機控制、串行通信和高速網(wǎng)絡(luò)。與繼電器組等較舊的技術(shù)相比，PLC 更易于故障排除和維護、更可靠、更具成本效益且用途更廣泛。

Modicon 是“模塊化數(shù)字控制器”的縮寫，它既是1968 年發(fā)明的第一個 PLC 產(chǎn)品的名稱，也是發(fā)明它的品牌，盡管現(xiàn)在歸施耐德電氣所有。

雖然它可能看起來不像典型的家用計算機，但 PLC 的核心與大多數(shù)人在日常生活中使用的計算機和智能設(shè)備中所見的技術(shù)完全相同。

基本組件

PLC由幾個基本部分組成。它們可能看起來與各個制造商略有不同，但每個組件的用途和范圍是相同的。其中包括電源、中央處理單元 (CPU)、輸入/輸出卡以及放置輸入/輸出 (I/O) 卡的背板或機架。

如圖 2 所示，背板在所有獨立組件之間建立了電氣連接，從而為 PLC 提供了模塊化設(shè)計。這種電連接包括電源和通信信號。許多 PLC 制造商在背板上使用專有通信協(xié)議，以便 I/O 可以安全地與 CPU 通信。

電源

根據(jù)應(yīng)用和安裝環(huán)境，電源可接受 120VAC 或 24VDC。如上所述，此電壓通過背板為 CPU 和 I/O 模塊提供電源，這些模塊以“卡”的形式出現(xiàn)。這些卡可以從它們在載體中的插槽中快速添加或移除。

需要注意的是，CPU 的電源并不為傳感器和線圈等現(xiàn)場設(shè)備供電。此電源連接必須單獨與卡建立。

中央處理器 (CPU)

CPU 是 PLC 的實際“大腦”，使其成為計算機。即使是小型的非模塊化 PLC 也包含一個 CPU。輸入信號來自 I/O 卡，邏輯程序根據(jù)信號做出決策。如果需要，CPU 然后命令輸出隨著信號和條件的變化而打開和關(guān)閉。

程序可能包括高級功能，例如數(shù)學(xué)運算、計時、計數(shù)和通過現(xiàn)代網(wǎng)絡(luò)協(xié)議共享信息。對于較舊的中繼系統(tǒng)，其中許多操作即使不是不可能，也是極其困難的。

輸入/輸出卡

傳感器、按鈕、開關(guān)、繼電器、螺線管甚至網(wǎng)絡(luò)設(shè)備與連接到 I/O 卡上的螺絲端子的 I/O 信號共享信息。可以根據(jù)每臺機器和設(shè)??施的需要選擇這些卡。在一些小型 PLC中，I/O 端子不是模塊化卡，而是方便地安裝在 PLC 的側(cè)面。

由于 I/O 設(shè)備結(jié)構(gòu)種類繁多，分立和模擬模塊的種類繁多，模擬模型的術(shù)語有“源”與“灌”，“電壓”與“電流” 。

編程設(shè)備和人機界面

PLC 本身之外有兩個非常重要的組件：編程設(shè)備和人機界面 (HMI)。編程設(shè)備可以是來自同一制造商的臺式計算機、膝上型計算機或手持式儀器。一些小型 PLC 甚至在前面有按鈕，可以在不需要計算機的情況下對非?；镜倪壿嫴僮鬟M行編程。

雖然編程設(shè)備允許用戶查看和修改運行在 PLC 上的代碼，但 HMI 提供了一種顯示信息和獲取輸入的方法，將控制系統(tǒng)建模為一個整體。HMI 通常不提供任何修改邏輯程序的方法。

圖 3 顯示了一個HMI 觸摸屏，它可以在控制室中使用，也可以在更靠近過程的“現(xiàn)場”中使用。這些類型的交互式顯示器非常常見，通常直接安裝在 PLC 外殼上或附近供操作員使用。

M6HLON-0090-00 - PACIFIC SCIENTIFIC - DRIVE MILLENNIUM NON-REGEN 100HP 3PH 50/60HZ
SC755A040-08 - PACIFIC SCIENTIFIC - SERVO DRIVE BRUSHLESS
C0753.N4CH000NNNN - PACIFIC SCIENTIFIC - DRIVE 75HP 82/149A 3PH 460V CHASIS NON-REGENERATIV
R88GENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA54Q1110000 - PACIFIC SCIENTIFIC - SERVO MOTOR
S32ANAH-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 640VDC 1.9KW
SC904NN00101 - PACIFIC SCIENTIFIC - SERVO DRIVE
SC752B-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE BRUSHLESS 230VAC 3PHASE 3.8AMP
R45SEBAHSNFNV02 - PACIFIC SCIENTIFIC - MOTOR
PMA57R10100000 - PACIFIC SCIENTIFIC - MODULE
PMA57S1110000 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA54R0010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA43P-11100-00 - PACIFIC SCIENTIFIC - 1.9KW 3.8A 3600RPM 560/640V
OC950-603-01 - PACIFIC SCIENTIFIC - PROGRAMMABLE POSITIONING MODULE ENHANCED 32KX8 RAM
R46GEAAR2NSNV00 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA45N0110000 - PACIFIC SCIENTIFIC - SERVO MOTOR
SC753A-001-02 - PACIFIC SCIENTIFIC - SERVO DRIVE
R67GENAR2NSNV00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R67GENAR2NSVS00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R46GCNA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR
F45GENAR2NSNV00 - PACIFIC SCIENTIFIC - MOTOR
F46HCNAR2NSNV00 - PACIFIC SCIENTIFIC - DRIVE
SC902AN00101 - PACIFIC SCIENTIFIC - SERVO DRIVE
SCE935AN-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 400VAC 3PHASE
R34JENCTSNSNV00 - PACIFIC SCIENTIFIC - MOTOR
SCE902NN00101 - PACIFIC SCIENTIFIC - CONTROLLER
SCE905AN00101 - PACIFIC SCIENTIFIC - SERVO DRIVE
SC723B001-01 - PACIFIC SCIENTIFIC - SERVO CONTROLLER STANDARD 7.5AMP115/230VAC 1/3PH
SC756A-001-01 - PACIFIC SCIENTIFIC - SERVO CONTROLLER 230VAC 3 PHASE 38 FLA
R46GENA-TS-NG-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R35KENCR2NSVS00 - PACIFIC SCIENTIFIC - SERVO MOTOR
SC903NN-001-01 - PACIFIC SCIENTIFIC - SERVO AMPLFR
PMA57R-00100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS NO BRAKE
R65GMNA-TS-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 13.1AMP 115LB-IN 600VDC
M5HHON-00091-00 - PACIFIC SCIENTIFIC - DRIVE MILLENNIUM NON-REGEN 75HP 3PH 50/60HZ
R45-GCNA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 48LB-IN 6.7A 320VDC 1.4KW 2500RPM
PMA54R1010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
R45HCNAR2NSVS00 - PACIFIC SCIENTIFIC - SERVO
SC904-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 18AMP 3PHASE 230VAC 50/60HZ
F46GCNAR2NSNV00 - PACIFIC SCIENTIFIC - SERVO MOTOR
SC750 - PACIFIC SCIENTIFIC - SERVO CONTROL
OC950-502-01 - PACIFIC SCIENTIFIC - PROGRAMMABLE POSITION MODULE 32KX8 NV RAM
S24HNNA-RNVC-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 6.3AMP
SC752A-001-02 - PACIFIC SCIENTIFIC - SERVO DRIVE SC750 115/230V 50/60HZ 1/3PH 2200W
PMA55Q1010000 - PACIFIC SCIENTIFIC - MOTOR
R32GEACR2NSNV00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R8AHENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 451 IN-LB 2000 RPM 60 AMP
R65GMNA-R2-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1700RPM 320VDC 13.1AMP
R45-GCAA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 48LB-IN 6.7AMP
M5HLON-00115-00 - PACIFIC SCIENTIFIC - DRIVE MILLENNIUM NON-REGEN 50HP 3PH 50/60HZ
S32GNAARNVE00 - PACIFIC SCIENTIFIC - SERVO MOTOR
DSDSD402A001 - PACIFIC SCIENTIFIC - SERVO
R84HEAA-R2-NS-VS-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 240AC 320DC 44.5NM PEAK 4POLE SYNCH
R45GENATSNSNV00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R45GCAAR2NSNV80 - PACIFIC SCIENTIFIC - SERVO
R46GEBAR2NSVS00 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA54Q1010000 - PACIFIC SCIENTIFIC - MOTOR
S32HNNAHSNS02 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA45R-11100-02 - PACIFIC SCIENTIFIC - SERVO MOTOR DC
M5HLEN-00115-00 - PACIFIC SCIENTIFIC - DRIVE MILLENNIUM NON-REGEN 50HP 3PH 50HZ
SC904AN-046-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 230VAC 3PH 50/60HZ
PMA44P0010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
S24HNNARNNM00 - PACIFIC SCIENTIFIC - MOTOR
R35KENC-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 32IN/LBS 3.6NM 58V/KRPM .56V/RAD/SEC
SC905-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 29AMP 240VAC 3PHASE
SC905NN-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 240VAC 3PHASE
6445-001-K-N - PACIFIC SCIENTIFIC - SERVO CONTROL 3.5/2.5AMP 120/230VAC 50/60HZ
R33GMNC-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 3000RPM 320VDC
R65GEAAR2NSVS00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R45-HENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1060RPM 13.4AMP 320VDC
52219563E285 - PACIFIC SCIENTIFIC - ET018-010-S-RM180-92 (W/THIXOGREASE) GEARS - MACHINED - GEAR BOX
PMA65R1110000 - PACIFIC SCIENTIFIC - CONTROL
PMA45Q1010000 - PACIFIC SCIENTIFIC - MOTOR
SCE902AN00101 - PACIFIC SCIENTIFIC - SERVO DRIVE
R45HEAA-RS-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 13.4AMP 320VDC
R45HEAA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 13.4AMPS 320VDC .81OHMS
R24-HENA-R1-NS-NV-01 - PACIFIC SCIENTIFIC - SERVO MOTOR 3.6AMP 8.92LB-IN W/ENCODER
S34GNNA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1.9KRPM
PMA45R0010000 - PACIFIC SCIENTIFIC - MOTOR
SC943T200101 - PACIFIC SCIENTIFIC - SERVO DRIVE
SC933-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 120/240V 1/3PH 50/60HZ W/OC930
SC933-001-NN-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 120/240V 1/3PH 50/60HZ W/OC930
165-032033-01 - PACIFIC SCIENTIFIC - SERVO DRIVE SC903 IN 115/230V 1/3PH
S21GNNA-RNNL-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1.9AMP 12.0OHMS
S32GNNA-RNNE-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS
S33GNAA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3.4A 320VDC .45KW 900RPM
R46HSNATSSSVS02 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA23V101000 - PACIFIC SCIENTIFIC - MOTOR
PMA23V1010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
SC753A-005-01 - PACIFIC SCIENTIFIC - DRIVE SERVO 12/12AMP 115/230VAC 1/3PH 50/60HZ
PMA55R-10100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 4.3KW 3000RPM 560VDC 3PHASE
S31HNNA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 2.2NM 4.1AMP
S33HNNA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 6.9AMP 2.1OHM 5.1NM
SC902TN00101 - PACIFIC SCIENTIFIC - SERVO DRIVE
SC933-NN-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 120/240V 1/3PH 50/60HZ NO OPTION
CFRO100750 - PACIFIC SCIENTIFIC - CABLE
R43-HCNA-NP-RW-VS-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 33INLBS 3700RPM 360VDC
S32GMNARNNE00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R22-GENA-R1-NS-NV-01 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS
PMA24C1110000 - PACIFIC SCIENTIFIC - AC SERVO
PC834-001-T - PACIFIC SCIENTIFIC - SERVO DRIVE 120-240V 3PHASE
SC753-A010-02 - PACIFIC SCIENTIFIC - SERVO DRIVE 115/230V 1/3PHASE 12/12AMP 50/60HZ
R43-HCNA-NP-RW-VS-03 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 33INLBS 3700RPM 240VAC
SR3632-8292-84-7-56HC - PACIFIC SCIENTIFIC - SERVO MOTOR 1/3HP 90VDC 1750RPM TENV
R63HENA-R2-NS-VS-00 - PACIFIC SCIENTIFIC - BRUSHLESS SERVO MOTOR
S32GNNA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3.8AMP 6.4OHM
R43HEAAR2N5VS02 - PACIFIC SCIENTIFIC - SERVO MOTOR
SC452-011-15 - PACIFIC SCIENTIFIC - SERVO DRIVE
R46GENA-TS-LS-NV-02 - PACIFIC SCIENTIFIC - MOTOR 6.7AMP 6.5IN/LB
S33TEM - PACIFIC SCIENTIFIC - STEPPER MOTOR
R43-HCNA-NP-RW-VS-02 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 33INLBS 3700RPM 240VAC
SC903TN00101 - PACIFIC SCIENTIFIC - SERVO
PMA42N-01100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 24VDC BRAKE
S31GMNARNNNM00 - PACIFIC SCIENTIFIC - MOTOR
PMA42M0010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMA24D-10100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3.7A 9.6MN 5850RPM
PMA57R-01100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 2100RPM 3PH 560/640VDC
SC-755A001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE STANDARD UNIT 24K MEMORY 30AMP 230VAC
SCE905-N-N-001-01 - PACIFIC SCIENTIFIC - SERVO CONTROLLER 480VAC 3 PHASE 10 FLA
R63GENA-TS-NF-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3000RPM 13.5AMP 320VDC 2.1KW 8LB-IN
6440-001-N-N - PACIFIC SCIENTIFIC - MICROSTEPPING INDEXER DRIVE
S33ANAH-RNVE-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 4.9AMP 137V 5.1NM 5.2OHMS
M4LH0R-00000-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 20HP DC
SC723A-001 - PACIFIC SCIENTIFIC - DRIVE SERVO CONTROL 3PHASE 115/230V
R43HEAA-R2-NS-VS-02 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 64V/RPM 6.9AMP 2.5OHM
S33GNNA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3.4AMP 5.1NM 174V/KRPM 1.67V/RAD/SEC
PMA21B-00100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 3PH 6050RPM 320VDC
52219579E315 - PACIFIC SCIENTIFIC - ET014-004-S-RM142-96 SPL GREASE SEE ENG GEARS - MACHINED - GEAR BOX
PMA24D0010000 - PACIFIC SCIENTIFIC - SERVO MOTOR
C003-5R2CH000NN - PACIFIC SCIENTIFIC - DRIVE 3HP REGENERATIVE 230V MODEL500 3PH 230V 7.4A
R35JEACR2NSNV00 - PACIFIC SCIENTIFIC - CONTROL
M4LH0R-00104-01 - PACIFIC SCIENTIFIC - SERVO DRIVE
SC903-001-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 7.5AMP 120/240V SC900 SERIES
R65GENA-NP-RW-VS-02 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 70LB-IN 13.5AMP
N42HLHLLSSNS03 - PACIFIC SCIENTIFIC - MOTOR
PMA22B-00100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 240VAC
PC833-001-T - PACIFIC SCIENTIFIC - SERVO DRIVE SINGLE AXIS BRUSHLESS
PMA43Q-10100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 6000RPM 560/640VDC 3PH CLASS F
SC90200101NNN - PACIFIC SCIENTIFIC - CONTROLLER
PC3405DD001E - PACIFIC SCIENTIFIC - SERVO DRIVE 18-74VDC/5A INPUT 0-74VDC/5A OUTPUT
R35KENT-TS-M1-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR W/ TACSYN
SC953-TN-501-01 - PACIFIC SCIENTIFIC - MOTION CONTROLLER
52219579E314 - PACIFIC SCIENTIFIC - ET014-004-S-RM142-82A SPL GREASE SEE ENG GEARS - MACHINED - GEAR BOX
121-236 - PACIFIC SCIENTIFIC - SERVO DRIVE 230VAC 3PH 50/60HZ
S31GNAA-RNNM-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 2.1A 2.2LBS/IN 1300RPM
R32GENC-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1.6NM 52V/KRPM 3.6AMP
6435-001-N-N - PACIFIC SCIENTIFIC - STEP DRIVER
6430-001-N-N - PACIFIC SCIENTIFIC - DRIVE CONTROL DIGITAL ELECTRONIC DAMPING 120/230V
R67HENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 27.6AMP 320VDC 3.4KW 2000RPM
R67HEN-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 82RPM 27.6AMP .37OHM
PMA13B-00100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 480VAC 9000RPM
R82SSNA-NP-RM-NV-02 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 16.8AMP 79RPM
R63GENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - BRUSHLESS SERVO MOTOR 13.5AMP 320VDC 3000RPM 2.1KW
R45-HENA-NP-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 1060RPM 13.4AMP 320VDC
PMA12A1010000 - PACIFIC SCIENTIFIC - SERVO
SCE955NN-501-01 - PACIFIC SCIENTIFIC - SERVO DRIVE 15.9/31.8AMP
R33GSNC-HS-NS-NV-02 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 3.9A 6.9OHM 21LB-IN 70V/KRPM
F43GCNA-R2-NS-VS-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS 3.6AMP
R43HENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 6.9AMP 3700RPM
SC754A-001-02 - PACIFIC SCIENTIFIC - SERVO DRIVE 3PH 230VAC 18FLA 50/60HZ
R46GENH-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 64IN-LB 3000RPM 6.7A W/HIGH VOLT WINDG
PMA42N-00100-00 - PACIFIC SCIENTIFIC - SERVO MOTOR BRUSHLESS NO BRAKE
R43HCNA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR
R45-GENA-R2-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR 360VDC 6.7AMP 3.2OHM
R24GENA-R1-NS-NV-00 - PACIFIC SCIENTIFIC - SERVO MOTOR
PC834-101-N - PACIFIC SCIENTIFIC - SERVO DRIVE 240VAC 50/60HZ
S31GNNARNUM00 - PACIFIC SCIENTIFIC - SERVO MOTOR
PMB120B24E24MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.5 BORE, 4250 LB-IN, 24V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B24E26MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.75 BORE, 4250 LB-IN, 24V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B24M40MRD - PACIFIC SCIENTIFIC - 11.9 OD, 40 MM BORE, 4250 LB-IN, 24V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B24M45MRD - PACIFIC SCIENTIFIC - 11.9 OD, 45 MM BORE, 4250 LB-IN, 24V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B90E24MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.5 BORE, 4250 LB-IN, 90V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B90E26MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.75 BORE, 4250 LB-IN, 90V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B90M40MRD - PACIFIC SCIENTIFIC - 11.9 OD, 40 MM BORE, 4250 LB-IN, 90V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B90M45MRD - PACIFIC SCIENTIFIC - 11.9 OD, 45 MM BORE, 4250 LB-IN, 90V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B190E24MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.5 BORE, 4250 LB-IN, 190V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B190E26MRD - PACIFIC SCIENTIFIC - 11.9 OD, 1.75 BORE, 4250 LB-IN, 190V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B190M40MRD - PACIFIC SCIENTIFIC - 11.9 OD, 40 MM BORE, 4250 LB-IN, 190V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT
PMB120B190M45MRD - PACIFIC SCIENTIFIC - 11.9 OD, 45 MM BORE, 4250 LB-IN, 190V, SPRING-SET POWER OFF BRAKE W/MAN. RELEASE TORQUE ADJUSTMENT NUT