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1756-0B161 - 16P 24VDC Isolated Output - Industrial Rugged Hot-Swap Digital Module

1756-0B161 - 16P 24VDC Isolated Output - Industrial Rugged Hot-Swap Digital Module

MOQ: 1
Price: Negotiable
Standard Packaging: 50*50*50mm
Delivery Period: 3-7
Payment Method: T/T
Supply Capacity: 1/piece in stock
Detail Information
Place of Origin
America
Brand Name
Allen Bradley
Certification
3C
Model Number
1756-0B161
Condition:
New
Module Type:
Processor Module
Thermal Dissipation:
17.4 BTU/h
Firmware Version:
Full Version
Max. Input Current:
1.5A
Communication Ports:
Ethernet, USB, RS-232
Model:
1746-IA4
Input Frequency Range:
50 Kilohertz
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Product Description
1756-0B161 - 16P 24VDC Isolated Output - Industrial Rugged Hot-Swap Digital Module
Attribute Value
Condition New
Module Type Processor Module
Thermal Dissipation 17.4 BTU/h
Firmware Version Full version
Max. Input Current 1.5A
Communication Ports Ethernet, USB, RS-232
Model 1746-IA4
Input Frequency Range 50 kilohertz
Product Overview

The Allen-Bradley 1756-OB16I 16-Channel Isolated Output Module is a high-performance digital output component for Rockwell Automation's ControlLogix ® platform. Engineered for mission-critical industrial automation, it features galvanic isolation between channels to prevent ground loops and voltage interference. The module delivers robust 24V DC sinking outputs (0.5A per channel) with short-circuit protection and supports CIP Safety ™ protocol for functional safety compliance. Its hot-swappable design enables maintenance without system shutdown, while a built-in diagnostic LED per channel provides real-time status monitoring. Constructed with an anodized aluminum housing and conformal-coated circuitry, it operates reliably in harsh environments with severe EMI/vibration exposure.

Critical Technical Specifications

Defining precision and resilience:

  • Output Channels: 16 isolated sinking outputs (24V DC)
  • Current Capacity: 0.5A continuous per channel (8A total module) with ±0.1% accuracy
  • Isolation: 1500V AC channel-to-bus / 250V AC channel-to-channel
  • Response Time: ≤1ms (ON/OFF) with 2 μs synchronization via CIP Sync™
  • Surge Protection: 40A clamp (IEC 61000-4-5)
  • Voltage Range: 19-30V DC (operational) / 5-30V DC (signal)
  • Environmental: -40°C to +70°C / 5-95% non-condensing humidity
  • Certifications: UL 61010-1, ATEX/IECEx Zone 2, ISASecure EDSA Level 2
  • Communication: ControlNet™/EtherNet/IP™ via 1756 backplane (20 Mbps)
Targeted Applications

Critical industrial control scenarios:

  • Energy Systems: Emergency shutdown (ESD) valve control in oil/gas refineries
  • Automotive Manufacturing: Robotic welding cell safety interlocks per ISO 13849
  • Chemical Processing: Solenoid-actuated dosing pump sequencing
  • Water Treatment: High-current actuation of sludge press valves
  • Material Handling: Conveyor emergency-stop circuit redundancy
  • Pharmaceutical: Isolator barrier system control with SIL 3 compliance
  • Power Generation: Turbine cooling fan activation during overload events
Competitive Advantages

Operational superiority drivers:

  • Fail-Safe Integrity: Dual-wire FaultTolerant ™ architecture with IEC 61508 SIL 3 certification
  • Zero Downtime Maintenance: Hot Backup ™ redundancy with automatic channel failover
  • Smart Diagnostics: Predictive load monitoring alerts before contact degradation
  • Obsolescence Protection: Embedded FRAM memory retains data for 20+ years without batteries
  • Cyber Resilience: Diode-Level Port Security blocks unauthorized backplane access
  • Power Optimization: <1W per channel (65% less heat dissipation)
  • Total Cost Reduction: Eliminates external isolators - saves $2,000+ per cabinet
Functional Capabilities

Advanced control and integration:

  • Programmable Behaviors: Per-channel pulse stretching (1-65,535ms) + soft-start sequencing
  • Safety Logic: Integrated STO (Safe Torque Off) for motor drives via CIP Safety™
  • Analog Feedback: 16-bit current monitoring with 0.1mA resolution
  • Synchronization: ±250μs skew control across modules for motion-critical systems
  • Electronic Marshalling: Studio 5000 ® auto-discovery maps I/O without jumpers
  • Load Management: Adaptive inrush control (8x rating for 10ms)
  • Compliance Logging: Audit trails for FDA 21 CFR Part 11/GAMP 5
Attribute Category Specification Details
Model Number 1756-OB16I (Series A/B)
Product Type 120V AC Digital Output Module (ControlLogix Platform)
I/O Points 16 points (Individually Isolated)
Output Voltage 120V AC (±15%)
Output Current Max per Point: 0.5 A
Max Module: 8 A (shared across all points)
Isolation Channel-to-Channel: 250V AC
Channel-to-Backplane: 1500V AC
Switching Element Triac (Solid-State)
Response Time Turn On: ≤ 1 ms
Turn Off: ≤ 1/2 AC cycle (10 ms @ 50 Hz)
Surge Current 15 A for 20 ms (per point)
Backplane Current 5V DC: 100 mA
24V DC: 40 mA (for logic)
Communication ControlLogix Backplane (Supports Logix5000 Firmware v16+)
Diagnostics Per-Point Status: LED indicators
Module Status: OK/RUN/FAULT LEDs
Termination Removable 36-pin screw terminal block (1756-TBS, -TBNH, or -TBCH)
Protection Features Short-Circuit Protection: Group-fused (internal electronic fusing)
Overload: Automatic shutdown
Operating Temperature Standard: 0°C to 60°C
Extended: -20°C to 60°C (with derating)
Certifications UL Listed, CE, cULus, ATEX/IECEx (Zone 2), RoHS
Dimensions (H×W×D) 135 × 56 × 87 mm
Key Features • Individual Point Isolation
• High-Density AC Switching
• Live Insertion (Hot-Swapping)
• Logix Integration (Studio 5000)
Packaging & Shipping
1756-0B161 - 16P 24VDC Isolated Output - Industrial Rugged Hot-Swap Digital Module 0
Company Information

Xiamen ZhiCheng Automation Technology Co., Ltd is a leading global supplier of control system components. We specialize in control systems and drives.

More about us, you can view our official website: www.zcsensors.com

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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts which make sure that all jobs are perfectly.

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