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Allen-Bradley 1756-OBV8S ControlLogix Output Module

Allen-Bradley 1756-OBV8S ControlLogix Output Module

Allen-Bradley 1756-OBV8S Price $238

Manufacturer:Allen-Bradley
Series: ControlLogix
Model Number: 1756-OBV8S
Weight:0.45 kg KG
Condition: In Stock
Availability: 100% Original Brand New
Product Origin:USA
Shipping port: Xiamen
Warranty: 12 Month

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Product Overview

The Allen-Bradley 1756-OBV8S ControlLogix output module delivers eight isolated sourcing outputs for reliable discrete control. You can use it with any ControlLogix chassis. It provides diagnostic feedback and electronic protection. This module ensures high‑density output in a compact design.

Technical Specifications

The 1756-OBV8S offers eight isolated 24V DC sourcing outputs. Each output supports up to 2A continuous current. The module provides electronic short‑circuit and overload protection. It includes open‑wire and load‑powered diagnostics. The operating temperature range spans 0°C to 60°C. Storage temperature extends from -40°C to 85°C. Relative humidity tolerance reaches 5% to 95% non‑condensing. The module withstands 50g mechanical shock and 5g vibration. It delivers isolation up to 1500V between outputs and backplane. The 1756-OBV8S uses a high‑speed backplane interface for deterministic control. This design minimizes signal delay and improves system response.

Installation and Guidance

  1. Power down the ControlLogix chassis completely before installation.
  2. Select an available slot in the chassis for the 1756-OBV8S.
  3. Align the module’s top and bottom guides with the chassis slot.
  4. Push the module firmly into the slot until it clicks securely.
  5. Tighten the module’s top and bottom screws to secure it.
  6. Connect the 24V DC power supply to the module’s power input.
  7. Wire each output channel to your field devices using proper gauge wire.
  8. Verify all connections for correct polarity and tightness.
  9. Power up the chassis and verify the module’s diagnostic LEDs.
  10. Configure the module in your ControlLogix programming software.

Packing List & Shipping

  • Included Items:
    • One Allen-Bradley 1756-OBV8S ControlLogix output module
    • One removable terminal block (RTB)
    • One keying band for correct slot orientation
    • One printed quick‑start guide
  • Shipping Methods: FedEx, UPS, DHL

 

PRODUCT FIELDS DATA

Field Name Value
Manufacturer Allen-Bradley (Rockwell Automation)
Series ControlLogix
SKU (Model) 1756-OBV8S
Product Type I/O Modules
Product Origin USA
Weight (kg) 0.45
Expected Selling Price (RMB) 3500
Condition New / Original
Shipping Port Xiamen
Warranty 12 Month
ShippingDetails Fast shipping via FedEx, UPS, DHL
HasMerchantReturnPolicy 30-day return policy for defective items

Allen-Bradley 1756-OBV8S FAQ

Frequently Asked Questions (FAQ)

Q1: How do I troubleshoot a module that shows no output on any channel?
First, check the power LED to confirm the module receives 24V DC. Then verify that the chassis backplane supplies proper power. Finally, inspect your wiring for loose connections.

Q2: Can I use this module with a 1756‑L7x controller?
Yes, the 1756-OBV8S works with all ControlLogix 1756‑L7x and newer controllers. You must use a compatible firmware revision in your chassis.

Q3: What happens if an output channel detects an overload condition?
The module electronically shuts down that channel and sets a diagnostic bit. You can read the fault via the backplane. Reset the fault by cycling power or through the controller.

Q4: Does the module provide any built‑in surge protection for inductive loads?
No, the 1756-OBV8S does not include internal surge suppression. You should always add external flyback diodes or snubbers when driving solenoids or relays.

Q5: What is the typical response time from a change in control signal to output state?
The module updates outputs every 0.5 ms when using a local backplane. For remote I/O, add transmission delay. Always test your specific application timing.

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