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Allen Bradley PLCs

Allen Bradley PLCs

Rockwell Automation - Allen-Bradley PLC Product Development and Model/Series

Shortly after the death of co-founder Harry Bradley in July 1965, Allen-Bradley embarked on a journey that began with a challenge from General Motors to improve on the concept of standard computer control. This already existed, to a point, in the form of extremely large relay boxes - sometimes the size of entire rooms - that were designed to control another machine. By 1968, advancements in computing technology were bringing engineers ever closer to the possibility of making computer control a manageable, highly functional process.

Whether the future was wholly envisioned at this time, the ultimate goal would be a computer, or network of computers, that would make full industrial automation possible.

Pre-1970 - PDQ-II and PMC

A-B did not necessarily "win" the challenge brought by GM, but instead moved to purchase Bunker-Ramo Corporation, as well as Information Instruments, Inc., which had already developed the Program Data Quantizer, or PDQ-II controller. This model proved too big and too hard to program, even after several upgrades. But, Allen-Bradley persisted, and from the ashes of PDQ-II the programmable matrix controller arose.

1970 - PLC-1

The PMC was A-B's first functional controller; however, it still did not fully serve customer needs for machine controls. Improvements made based on these needs would result in the first A-B programmable logic controller, PLC-1, developed in part by Odo Struger, who also coined the now industry-wide acronym PLC.

Around this time, seven companies were in the PLC business, including contenders Allen-Bradley, Modicon, General Electric, Square D and Industrial Solid State Controls. And although PLCs were obviously a breakthrough that would revolutionize automation, they were still comparatively primitive. They were largely developed and used for specific applications, most often in the automotive industry.

But, Allen-Bradley was quick to implement improvements to its PLC and take advantage of the leaps in computing technology that were seemingly occurring by the hour. The company introduced its first computer interface and necessary offline software for PLCs by 1972, and followed that with the first PLC enabled with a CRT-based panel, to allow more efficient user programming.

In 1976, A-B famously introduced remote input/output systems, or Remote I/O, which would connect a PLC to devices, including operator interfaces, that are located elsewhere. This innovation would help reduce costs and increase efficiency when integrating and maintaining PLCs, and usher in the next generation.

1978 - PLC-2

The PLC-2 family is likely the oldest family of Allen-Bradley PLC still being used today. Parts are still available for these legacy controllers, and requests for software updates arise, if infrequently. Whatever innovation the model itself may have brought to the PLC market, however, was outshined a year later by A-B's introduction of the Data Highway - the industry's first plant floor network.

PLC-2s could bask in the reflected light, though, of being among the first PLCs to be connected via a Local Area Network (LAN) cable system, and provide peer-to-peer capabilities between PLC controllers and computers. This family was based on the Intel 8080 microprocessor, which supported 256 I/O ports, essentially turning a little power into a powerhouse for its time.

1981 - PLC-3

Increased demand in an integrated PLC framework required more processing power, and that's what the PLC-3 family delivered. This model was based on a significantly more advanced "bit-slice" AMD microprocessor, and offered the ability for multiple configurations and expansion options depending on the user's current needs vs. potential growth.

This was a time of great a varied development in the PLC community, but one problem that still remained was a lack of standardization across systems. These two movements were in conflict, and created a need for some kind of organization.

In 1985, A-B introduced an IBM-compatible programming terminal, and shortly after that it succeeded in linking controllers to personal computers, which ushered in the modern era of highly adaptable PLCs.

1986 - PLC-5

The PLC-5 is used all around the globe and marked a turning point in flexible PLC technology for A-B, despite its being bought out by Rockwell Automation in the year it was introduced.

Based on the Motorola 68000, this controller made a quantum leap in terms of processing power, as well as having the capability of forward compatibility - the ability to adapt to further evolutions of the PLC platform. This would prove essential as A-B fully embraced the imminent explosion of Internet utility in industrial automation, and communication in general.

There are more than 450,000 PLC-5 controllers being used worldwide in a wide array of industries, including wastewater treatment, automotive manufacture, metals production and all aspects of shipping. And, A-B has ensured a continued presence in these industries by designing controllers that have the network ability and flexible connectivity that enables them to work with the PLCs that would come next, as well as handle Internet-based applications.

1991 - SLC 500 System

The SLC 500 series was largely designed to answer one major question left by its predecessor - how to deliver industrial automation in a smaller package. Rockwell Automation estimates that more than 75% of companies that make up the Dow Jones Industrial Average use the SLC 500 System. This, along with a current global distribution that well exceeds the PLC-5 may easily make this Allen-Bradley's most widely used series.

In 1993 this series, along with the compatible PLC-5, fully entered the global communications community when A-B reached beyond LAN to introduce Ethernet and TCP/IP connectivity. This, along with the ability of using computer-based software to interface with PLCs allow for more software application integration, leading to enhanced debugging and scanning, which increases efficiency.

1994 - MicroLogix 1000

A-B experienced a burst of development in 1994, beginning with the launch of the MicroLogix family - a "micro-control" option that even further reduced the size of the standard PLC, while still offering an amazing amount of power and expansion options for growing industrial needs.

A-B also launched DeviceNet, an innovative "open-standard" communications protocol that A-B makes available to third parties and is managed by an independent company, which encourages A-B PLC use through increased compatibility. In tandem, A-B also introduced Flex I/O, which allows users increased input/output modules without the need for additional physical storage space. A-B then showcased ControlNet in 1995, in addition to shipping its one millionth PLC. ControlNet is a high-speed, high-performance open network option similar to DeviceNet that allows even more efficient PLC communication and interface capability.

Micrologix is available in the 1000, 1100, 1200, 1400 and 1500 models, with each offering more power, connectivity and expansion flexibility than the last.

2001-Present - Pico Controller

Development through the rest of the 1990s focused more on modernization or alternation of existing protocols, rather than creating new PLCs. An example of this is Allen-Bradley's latest and last PLC offering - a controller that is more of a relay. The Pico (Series A and B) is a stripped-down "PLC" that designed for simple cost-efficient control applications, such as parking lot lighting operation.

Along with the Pico, evolution continued in the A-B brand line during the early 2000s up until the current time with an expansion into a new version of the PLC, designated as a PAC, or programmable automation controller, which is aimed to emphasize a fuller integration between PLC and computer interface. The A-B line of PACs, including CompactLogix, ControlLogix, FlexLogix, SoftLogix and Drivelogix systems, offer a more user-friendly experience, and can reduce time spent on traditional logistical issues (operation, maintenance, etc.). But, in terms of their function, they still fall within the PLC family."

  • CompactLogix System
  • ControlLogix System
  • FlexLogix System
  • SoftLogix System
  • Drivelogix System

It would appear that as the bigger needs were being met and exceeded by more powerful microprocessors, more connectivity, more I/Os and more flexible options, a back-to-basics approach seemed to be the only direction to go. Indeed, Rockwell Automation's slogan, "Welcome to the World of Complete Automation," would seem to suggest a dawn of perfection in the world of PLC development.

CompactLogix, ControlLogix, FlexLogix, SoftLogix and Drivelogix systems

Allen Bradley

Product Description
1785-L86B PLC-5/86 Processor, 100K Protected Memory, 3072 I/O
1785-L80B PLC-5/80 Processor, 100K Memory, 3072 I/O
1785-L60L PLC-5/60L Processor, 64K Memory, 3072 I/O, Extended Local
1785-L60B PLC-5/60 Processor, 64K Memory, 3072 I/O
1785-L46B PLC-5/46 Processor, 48K Protected Memory, 2048 I/O
1785-L40L PLC-5/40L Processor, 48K Memory, 2048 I/O, Extended Local
1785-L40B PLC-5/40 Processor, 48K Memory, 2048 I/O
1785-L30B PLC-5/30 Processor, 32K Memory, 1024 I/O
1785-L26B PLC-5/26 Processor, 16K Protected Memory, 512 I/O
1785-L20B PLC-5/20 Processor, 16K Memory, 512 I/O
1785-L11B PLC-5/11 Processor, 8K Memory, 512 I/O
1785-ENET PLC-5 EtherNet Interface Module
1771-SDN PLC DeviceNet Scanner Module
1771-PSC Power-supply chassis, 4 slots
1771-PS7 Power Supply, 120/220 VAC, Remote
1771-P7 Power Supply, 120/220 VAC
1771-P6S1 Power Supply, 200 VAC
1771-P6S Power Supply, 220 VAC
1771-P6R Power Supply, 220 VAC, Redundant
1771-P5E Power Supply, 24 VDC, Selectable Power Loss Delay
1771-P5 Power Supply, 24 VDC
1771-P4S1 Power Supply, 100 VAC
1771-P4S Power Supply, 120 VAC
1771-P4R Power Supply, 120 VAC, Redundant
1771-P10 Power Supply, 125 VDC
1771-OZL Output Module, Relay, N.O., 8 pt.
1771-OX Output Module, Relay, Isolated, 4 pt.
1771-OWNA Output Module, Relay, N.O., 32 pt.
1771-OWN Output Module, Relay, Selectable, 32 pt.
1771-OW16 Output Module, Relay, Isolated, 16 pt.
1771-OW Output Module, Relay, Selectable, 8 pt.
1771-OVN Output Module, 10-32 VDC, Sink, 32 pt.
1771-OR Output Module, 220 VAC, Isolated, 6 pt.
1771-OQ16 Output Module, 10-32 VDC, Sink/Source, Isolated, 16 pt.
1771-OQ Output Module, 24 VDC, Source, Isolated, 8 pt.
1771-OP Output Module, 120 VAC, Protected, 4 pt.
1771-ON Output Module, 24 VDC, 8 pt.
1771-OMD Output Module, 220 VAC, 16 pt.
1771-OM Output Module, 220 VAC, 8 pt.
1771-OGD Output Module, 5 VDC, 16 pt.
1771-OG Output Module, 5 VDC, 8 pt.
1771-OFE3 Analog Output, Current, 0-50 ma, 4 ch.
1771-OFE2 Analog Output, Current, 4-20 ma, 4 ch.
1771-OFE1 Analog Output, Voltage, 4 ch.
1771-ODZ Output Module, 120 VAC, Isolated, 8 pt.
1771-ODD Output Module, 120 VAC, Isolated, Fuse Indicator,16 pt.
1771-OD16 Output Module, 120 VAC, Isolated, 16 pt.
1771-OD Output Module, 120 VAC, Isolated, 6 pt.
1771-OC Output Module, 40-60 VDC, Source, 8 pt.
1771-OBN Output Module, 10-30 VDC, Source, 32 pt.
1771-OBDS Output Module, 10-40 VDC, Source, Electronic Fuse, 16 pt.
1771-OBD Output Module, 10-60 VDC, Source, 16 pt.
1771-OB Output Module, 10-30 VDC, Source, 8 pt.
1771-OAN Output Module, 120/220 VAC, 32 pt.
1771-OAD Output Module, 120 VAC, 16 pt.
1771-OA Output Module, 120 VAC, 8 pt.
1771-IXHR Thermocouple Input, B, E, J, K, R, S, T ; High-resolution, 8 ch.
1771-IXE Thermocouple Input, E, J, K, R, S, T ; 8 ch.
1771-IVN Input Module, 10-30 VDC Source, 32 pt.
1771-IV Input Module, 12-24 VDC Source, 8 pt.
1771-IT Input Module, 12-30 VDC Sink, 8 pt.
1771-IR RTD Input, 6 ch.
1771-IQ16 Input Module, 10-30 VDC Sink/Source, 16 pt.
1771-IQ Input Module, 5-30 VDC Sink/Source, 8 pt.
1771-IND Input Module, 24 VAC/DC, 16 pt.
1771-IN Input Module, 24 VAC/DC, 8 pt.
1771-IMD Input Module, 220 VAC/DC, 16 pt.
1771-IM Input Module, 220 VAC/DC, 8 pt.
1771-IL Analog Input, Voltage/Current, Isolated, 8 ch.
1771-IH Input Module, 24-50 VDC Sink, 8 pt.
1771-IGD Input Module, 5 VDC, 16 pt.
1771-IG Input Module, 5 VDC, 8 pt.
1771-IFMS Analog Input, Millivolt, Fast Response, 8 ch.
1771-IFF Analog Input, Voltage/Current, Fast Response, 8 ch.
1771-IFE Analog Input, Voltage/Current, 8 ch.
1771-ID16 Input Module, 120 VAC/DC, Isolated, 16 pt.
1771-ID01 Input Module, 220 VAC/DC, Isolated, 6 pt.
1771-ID Input Module, 120 VAC/DC, Isolated, 6 pt.
1771-ICD Input Module, 20-60 VDC Sink, 16 pt.
1771-IC Input Module, 40-60 VDC Sink, 8 pt.
1771-IBN Input Module, 10-30 VDC Sink, 32 pt.
1771-IBD Input Module, 10-30 VDC Sink, 16 pt.
1771-IB Input Module, 10-30 VDC Sink, 8 pt.
1771-IAN Input Module, 120 VAC/DC, 32 pt.
1771-IAD Input Module, 120 VAC/DC, 16 pt.
1771-IA Input Module, 120 VAC/DC, 8 pt.
1771-DB PLC BASIC Module
1771-AM2 I/O chassis with integral remote I/O adapter and power supply, 2 slot
1771-AM1 I/O chassis with integral remote I/O adapter and power supply, 1 slot
1771-A4B I/O chassis for 1771 I/O modules, 16 slots
1771-A3B1 I/O chassis for 1771 I/O modules, 12 slots
1771-A3B I/O chassis for 1771 I/O modules, 12 slots, Rack mount
1771-A2B I/O chassis for 1771 I/O modules, 8 slots
1771-A1B I/O chassis for 1771 I/O modules, 4 slots
1756-PH75 Power Supply, 125 VDC, Series B
1756-PC75 Power Supply, 48 VDC, Series B
1756-PB75R Power Supply, 24 VDC, Redundant, Series B
1756-PB75 Power Supply, 24 VDC, Series B
1756-PB72 Power Supply, 24 VDC, Series A/B
1756-PA75R Power Supply, 120/240 VAC, Redundant,Series B

Allen Bradley

Product Description
1756-PA75 Power Supply, 120/240 VAC, Series B
1756-PA72 Power Supply, 120/240 VAC, Series A/B
1756-OX8I Output Module, Relay, Isolated, 8pt.
1756-OW16I Output Module, Relay, Isolated, 16 pt.
1756-OV32E Output Module, 12/24 VDC, Sink, Electronic Fuse, 32 pt.
1756-OV16E Output Module, 12/24 VDC, Sink, Electronic Fuse, 16 pt.
1756-ON8 Output Module, 24 VAC, 8 pt.
1756-OH8I Output Module, 120 VDC, Sink/Source, Isolated, 8 pt.
1756-OG16 Output Module, 5 VDC, 16 pt.
1756-OF8 Analog Output, Voltage/Current, 8 ch.
1756-OF6VI Analog Output, Voltage, Isolated, 6 ch.
1756-OF6CI Analog Output, Current, Isolated, 6 ch.
1756-OF4 Analog Output, Voltage/Current, 4 ch.
1756-OC8 Output Module, 48 VDC, Source, 8 pt.
1756-OB8I Output Module, 12/24 VDC, Source, Isolated, 8 pt.
1756-OB8EI Output Module, 12/24 VDC, Source, Isolated, Electronic Fuse, 8 pt.
1756-OB8 Output Module, 12/24 VDC, Source, 8 pt.
1756-OB32 Output Module, 12/24 VDC, Source, 32 pt.
1756-OB16I Output Module, 12/24 VDC, Sink/Source, Isolated, 16 pt.
1756-OB16E Output Module, 12/24 VDC, Source, Electronic Fuse, 16 pt.
1756-OB16D Output Module, 12/24 VDC, Source, Diagnostic, 16 pt.
1756-OA8E Output Module, 120 VAC, Electronic Fuse, 8 pt.
1756-OA8D Output Module, 120 VAC, Diagnostic, 8 pt.
1756-OA8 Output Module, 120/240 VAC, 8 pt.
1756-OA16I Output Module, 120/240 VAC, Isolated, 16 pt.
1756-OA16 Output Module, 120/240 VAC, 16 pt.
1756-L64 ControlLogix Processor, 16,384K Memory, 478K I/O, 64M Non-volatile
1756-L63 ControlLogix Processor, 8196K Memory, 478K I/O, 64M Non-volatile
1756-L62S ControlLogix Processor, 4096K Memory (1024M Safety), 478K I/O, 64M
1756-L62 ControlLogix Processor, 4096K Memory, 478K I/O, 64M Non-volatile
1756-L61S ControlLogix Processor, 2048K Memory (1024M Safety), 478K I/O, 64M
1756-L61 ControlLogix Processor, 2048K Memory, 478K I/O, 64M Non-volatile
1756-L55M24 ControlLogix Processor, 3584K Memory, 208K I/O, 3.5M Non-volatile
1756-L55M23 ControlLogix Processor, 1536K Memory, 208K I/O, 1.5M Non-volatile
1756-L55M22 ControlLogix Processor, 750K Memory, 208K I/O, 750K Non-volatile
1756-L55M16 ControlLogix Processor, 7680K Memory, 208K I/O
1756-L55M14 ControlLogix Processor, 3584K Memory, 208K I/O
1756-L55M13 ControlLogix Processor, 1536K Memory, 208K I/O
1756-L55M12 ControlLogix Processor, 750K Memory, 208K I/O
1756-L1M3 Processor, 2M Memory
1756-L1M2 Processor,1M Memory
1756-L1M1 Processor, 512K Memory
1756-L1 Processor, 160K Base Memory, Expandable
1756-IV32 Input Module, 12/24 VDC, Source, 32 pt.
1756-IV16 Input Module, 12/24 VDC, Source, 16 pt.
1756-IT6I2 Thermocouple Input, Isolated, B, E, J, K, R, S, T, N, C, L, D; 6 ch.,
1756-IT6I Thermocouple Input, Isolated, B, E, J, K, R, S, T, N, C; 6 ch., 1 CJC
1756-IR6I RTD Input, Isolated, 6 ch.
1756-IN16 Input Module, 24 VAC,16 pt.
1756-IM16I Input Module, 240 VAC, Isolated,16 pt.
1756-IH16ISOE Input Module, 125 VDC, Sink/Source, Isolated, Sequence of Events, 16
1756-IH16I Input Module, 125 VDC, Sink/Source, Isolated, 16 pt.
1756-IG16 Input Module, 5 VDC, Source, 16 pt.
1756-IF8 Analog Input, Voltage, 8 ch.
1756-IF6I Analog Input, Voltage, Isolated, 6 ch.
1756-IF6CIS Analog Input, Current Sourcing, Isolated, 6 ch.
1756-IF16 Analog Input, Voltage, 16 ch.
1756-IC16 Input Module, 48 VDC, Sink, 16 pt.
1756-IB32 Input Module, 12/24 VDC, Sink, 32 pt.
1756-IB16ISOE Input Module, 24/48 VDC, Sink/Source, Isolated, Sequence of Events,16
1756-IB16I Input Module, 12/24 VDC, Sink/Source, Isolated, 16 pt.
1756-IB16D Input Module, 12/24 VDC, Sink, Diagnostic, 16 pt.
1756-IB16 Input Module, 12/24 VDC, Sink, 16 pt.
1756-IA8D Input Module, 120 VAC, Diagnostic, 8 pt.
1756-IA32 Input Module, 120 VAC,32 pt.
1756-IA16I Input Module, 120 VAC, Isolated, 6 pt.
1756-IA16 Input Module, 120 VAC,16 pt.
1756-CNB Bridge module

 

Pub Time : 2015-08-18 15:59:49 >> News list
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