Product Details
Product Description
The Allen Bradley 1761-L32BWA is a MicroLogix 1000 series programmable logic controller (PLC) designed for compact automation systems requiring reliable digital input and relay output control. With 32 I/O points, integrated EEPROM memory, and RS-232 communication, this controller provides dependable performance for small-scale industrial applications.
Technical Specifications
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Manufacturer: Allen Bradley
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Product Line: MicroLogix 1000
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Category: Programmable Logic Controllers
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Model / Part Number: 1761-L32BWA
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Weight: 2 lbs (0.91 kg)
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I/O Count: 32 points total
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Inputs: 20 DC inputs (sinking/sourcing, 14–30 VDC)
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Outputs: 12 relay contact outputs
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Memory: 1K EEPROM (approx. 737 instruction words, 437 data words)
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Communication Port: RS-232, DF1 protocol
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Safety Feature: Master Control Relay (MCR)
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Isolation Voltage: 1500 VDC
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Power Supply: 120/240 VAC
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Input Power Consumption: 16 VA @ 120 VAC; 22 VA @ 240 VAC
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Inrush Current: 30 A for 4 ms
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Operating Frequency: 47–63 Hz
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Mechanical Endurance: 50,000 cycles minimum
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Shock Resistance: 10 G operating, 20 G non-operating
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Mounting Options: DIN rail or panel screws
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Dimensions: 7.87 × 2.87 × 3.15 in.
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Lifecycle Status: Discontinued / Obsolete
Application Scenarios
The 1761-L32BWA is suitable for small machine control, packaging systems, and basic automation tasks. Its relay outputs make it ideal for switching AC and DC loads, while the RS-232 port ensures straightforward integration with legacy communication networks.
FAQ
Q: How many inputs and outputs does this controller support? A: It provides 20 DC inputs and 12 relay outputs, totaling 32 I/O points.
Q: What type of communication protocol is used? A: The controller supports RS-232 communication using the DF1 protocol.
Q: Is this model still in production? A: No, the 1761-L32BWA is discontinued/obsolete but remains widely used in legacy systems.
Q: What is the isolation voltage rating? A: The module is rated at 1500 VDC isolation.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.