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What Is Allen-Bradley? A Comprehensive Overview
Industrial Automation · PLC & Drive Reference
What Is Allen-Bradley? A Comprehensive Overview — and What to Use Instead
Allen-Bradley, a brand of Rockwell Automation, is one of the most widely used names in industrial automation. This page covers the history, product lineup, and innovations behind Allen-Bradley — and, because IAC does not carry Allen-Bradley products, a full alternatives table showing exactly which IAC-stocked products replace each AB product line.
A Brief History of Allen-Bradley
Founded in 1903 by Lynde Bradley and Stanton Allen in Milwaukee, Wisconsin, Allen-Bradley built its early reputation on motor control components. Over the next century the company expanded into PLCs, variable frequency drives, servo systems, and HMIs, becoming the dominant industrial automation brand across North American manufacturing.
Rockwell Automation acquired Allen-Bradley in 1985. Today the Allen-Bradley name appears across the entire Rockwell Automation product catalog, from entry-level MicroLogix PLCs to enterprise ControlLogix rack systems and Kinetix servo platforms. Rockwell's Studio 5000 Logix Designer software ties these products together under a single programming environment.
Allen-Bradley Product Lineup at a Glance
- PLCs: MicroLogix (entry), CompactLogix (mid-range), ControlLogix (enterprise)
- Variable Frequency Drives: PowerFlex 4, 40, 525, 753, 755 series
- Servo Drives & Motors: Kinetix 300, 5500, 6500 series
- HMIs: PanelView 400 through PanelView Plus 1250
- Safety: GuardLogix, SmartGuard, safety relays
- Networks: EtherNet/IP, DeviceNet, ControlNet
Studio 5000 Logix Designer is the primary programming environment for all Logix-family PLCs. It supports Ladder Logic, Function Block Diagram, Structured Text, and Sequential Function Chart — all four IEC 61131-3 languages.
Can't Source Allen-Bradley? IAC Carries These Equivalents
IAC is not an authorized Allen-Bradley distributor. However, we stock direct equivalents from every major competing brand — all with a 2-year IAC warranty and same-day shipping.
Have a specific AB part number? Submit it here — our team will cross-reference it and find the match.
| AB Product | AB Model | IAC Alternative | Brand | IAC Collection |
|---|---|---|---|---|
| PLC (high-end) | ControlLogix | S7-1500 | Siemens | View → |
| PLC (mid-range) | CompactLogix | S7-1200, FX5U | Siemens, Mitsubishi | View → |
| PLC (entry-level) | MicroLogix 1100/1400 | CP1E, Modicon M221 | Omron, Schneider | View → |
| VFD (standard) | PowerFlex 525 | ACS580, GA500 | ABB, Yaskawa | View → |
| VFD (industrial) | PowerFlex 755 | ACS880, A1000 | ABB, Yaskawa | View → |
| VFD (compact) | PowerFlex 525 | Optidrive E3, S100 | Invertek, LS Electric | View → |
| Servo Drive | Kinetix | Sigma-7, IndraDrive | Yaskawa, Bosch Rexroth | View → |
| HMI | PanelView | SIMATIC HMI, GOT2000 | Siemens, Mitsubishi | View → |
PanelView HMI Screen-Size Cross-Reference
| Your PanelView | Screen Size | IAC Alternative |
|---|---|---|
| PanelView 400 | 4" | Siemens KTP400 Basic |
| PanelView 600 | 6" | Siemens KTP600 Basic |
| PanelView 700 | 7" | Siemens KTP700 Basic |
| PanelView 1000 | 10" | Siemens KTP1000 Basic |
| PanelView Plus 1250 | 12" | Maple Systems HMI |
Mitsubishi GOT2000 panels also available — compatible with non-Mitsubishi PLCs via Ethernet and serial. Browse HMIs →
Have a specific Allen-Bradley part number? Submit it at /pages/quote-request — IAC's team will cross-reference it and provide a quote for the equivalent, typically within 4 minutes during business hours.
PLC Software Cross-Reference for AB Programmers
If your controls team lives in Studio 5000, the transition to an alternative PLC platform is shorter than most engineers expect. Core instructions — XIC, XIO, OTE, TON, CTU — exist across all three platforms listed below. AB-trained engineers are typically productive within days.
| Software | PLC Brand | Cost | Learning Curve for AB Programmers |
|---|---|---|---|
| TIA Portal | Siemens S7-1200/1500 | Free (Basic) | Low — similar to Studio 5000 |
| Sysmac Studio | Omron NX/CP | Free trial | Low — clean interface |
| GX Works3 | Mitsubishi FX5U/iQ-R | Free | Low — familiar structure |
XIC, XIO, OTE, TON — these instructions exist in all three platforms under the same logic. The main adjustment is navigating a new IDE, not relearning automation fundamentals.
Frequently Asked Questions
Does IAC sell Allen-Bradley products?
No. IAC is not an authorized Allen-Bradley or Rockwell Automation distributor and does not carry Allen-Bradley parts. IAC stocks direct equivalents from Siemens, ABB, Yaskawa, Omron, Mitsubishi, Invertek, LS Electric, Bosch Rexroth, and Schneider Electric — covering every major Allen-Bradley product category.
What is the best replacement for a PowerFlex 525?
The closest equivalents to the Allen-Bradley PowerFlex 525 are the ABB ACS580 and the Yaskawa GA500. Both cover the same horsepower range, use identical input/output wiring (L1/L2/L3 in, T1/T2/T3 out), and support similar parameter structures. Engineers typically pay 20–45% less than PowerFlex 525 pricing. IAC also stocks the Invertek Optidrive E3 and LS Electric S100 as alternatives.
What replaces a ControlLogix PLC?
The Siemens S7-1500 is the most direct replacement for the Allen-Bradley ControlLogix. Both are rack-based, enterprise-grade PLC platforms with high I/O counts, redundancy options, and network connectivity. The S7-1500 supports Ladder Logic programming, minimizing retraining for AB-trained controls engineers.
What replaces a CompactLogix PLC?
The Siemens S7-1200 and Mitsubishi FX5U are the most common CompactLogix replacements. The S7-1200 offers modular I/O expansion with built-in Ethernet. The FX5U includes built-in analog I/O and Ethernet as standard. Both support Ladder Logic and IEC 61131-3 programming.
What replaces a MicroLogix PLC?
The Omron CP1E and Schneider Electric Modicon M221 are direct MicroLogix equivalents. Both match the I/O count of MicroLogix 1100 and 1400 models at significantly lower cost. IAC stocks both.
What replaces Allen-Bradley PanelView HMIs?
Siemens SIMATIC KTP series panels are screen-for-screen PanelView replacements: KTP400 Basic (4"), KTP600 Basic (6"), KTP700 Basic (7"), and KTP1000 Basic (10"). Mitsubishi GOT2000 and Maple Systems HMIs are also stocked by IAC. Browse IAC HMIs →
What replaces Allen-Bradley Kinetix servo drives?
The Yaskawa Sigma-7 (SGDV series) and Bosch Rexroth IndraDrive (DKC/HCS series) are the most common Kinetix replacements. IAC specializes in Bosch Rexroth IndraDrive refurbished inventory and stocks Yaskawa Sigma-7 as a top-selling servo line. Browse servo drives →
Is Ladder Logic programming the same across PLC brands?
Yes. Ladder Logic is standardized under IEC 61131-3. Core instructions — XIC, XIO, OTE, TON, CTU — exist in Siemens TIA Portal, Omron Sysmac Studio, and Mitsubishi GX Works3. AB-trained controls engineers typically adapt to an alternative platform within a few days.
Does IAC offer a warranty on Allen-Bradley alternative products?
Yes. All products IAC ships carry a 2-year IAC warranty, regardless of brand or whether the product is new, surplus, or IAC Certified Refurbished.
Can IAC cross-reference my Allen-Bradley part number to find an equivalent?
Yes. Submit your Allen-Bradley part number via the IAC quote request form. IAC's team will identify the equivalent model from a stocked brand, confirm compatibility, and provide a quote — typically within 4 minutes during business hours.
Ready to find your Allen-Bradley equivalent? IAC's team responds in minutes.