1746-OBP8 Allen-Bradley | Output Module

Allen-Bradley 1746-OBP8 SLC 500 Digital DC Output Module

Core Technical Specifications

• Brand & Manufacturer: Allen-Bradley
• Series & Model: SLC 500 Series, 1746-OBP8
• Module Type: 8-Channel Digital DC Output (Sourcing)
• Output Voltage Range: 20.4 to 26.4 Volts DC
• Nominal Output: 24V DC
• Output Current: 2.0 Amps per point (0-60°C)
• Total Module Current: 8.0 Amps maximum
• Output Groups: 2 groups with 4 points each
• Backplane Current: 135 mA at 5V DC
• Signal Delay: 1.0 ms ON, 2.0 ms OFF (fast turn-off)
• Wire Size: Recommended maximum 2 mm² (14 AWG)

Performance & Electrical Ratings

• On-State Voltage Drop: 1.0V maximum at 2A
• Surge Current: 4A per point for 10ms maximum
• Off-State Leakage: Maximum 1 mA
• Minimum Load Current: 1 mA per output
• Heat Dissipation: 0.300W per point, 3.08W total module
• Isolation Voltage: 1500V AC (I/O to logic)
• Noise Immunity: Rated per NEMA ICS 2-230 standard
• Protection: No built-in electronic protection

Environmental & Mechanical Ratings

• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Storage Temperature: -40 to 85 °C (-40 to 185 °F)
• Relative Humidity: 5% to 95% (non-condensing)
• Operating Vibration: 2.5G at 57-2000 Hz
• Operating Shock: 30G

Frequently Asked Questions (FAQ)

• Q: What is the key feature of this output module?
  A: The 1746-OBP8 provides high current (2A per point) and a fast 2ms OFF response time.
• Q: Does it have built-in short-circuit protection?
  A: No. The 1746-OBP8 does not have electronic protection. You must provide external fusing.
• Q: What is your shipping and return policy?
  A: We ship within 5 days via major carriers and offer a 30-day return policy.
• Q: Can I use it to control 120VAC devices directly?
  A: No. You must use an interposing relay to interface with AC voltage loads.
• Q: How is the module divided internally?
  A: It has two independent groups, each containing 4 output points.