Output Module 1746-OB32 - Allen-Bradley

Allen-Bradley 1746-OB32 SLC 500 Digital DC Output Module

Core Technical Specifications

• Brand & Manufacturer: Allen-Bradley
• Series & Model: SLC 500 Series, 1746-OB32
• Module Type: 32-Channel Digital DC Output (Sourcing)
• Output Voltage Range: 5 to 50 Volts DC
• Nominal Output: 24V DC
• Output Current: 0.5 Amps per point (0.25A at 60°C)
• Total Module Current: 8 Amps maximum
• Points per Common: 16 points (2 isolated groups)
• Backplane Current: 190 mA at 5V DC
• Signal Delay: 0.1 ms ON, 1.0 ms OFF

Performance & Safety Features

• Output Isolation: Tested at 1500V AC for 1 minute
• Circuit Protection: No electronic fusing (relies on external protection)
• Off-State Leakage: Maximum 1 mA
• Voltage Drop: 1.2V maximum in ON state at 0.5A
• Surge Current: 1.0A per point for 1ms, repeatable every 2 seconds
• Heat Dissipation: 0.172W per point, 6.45W total module
• Noise Immunity: Rated per NEMA ICS 2-230 standard
• Safety Certification: C-UL, UL Listed for Class I, Div. 2, Groups A,B,C,D

Environmental & Durability Ratings

• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Relative Humidity: 5% to 95% (non-condensing)
• Vibration Resistance: 2.5G at 10-200 Hz
• Shock Rating: 30G operational
• Minimum Load: 1 mA per output channel

Frequently Asked Questions (FAQ)

• Q: How many output groups does the module have?
  A: The 1746-OB32 has two output groups with 16 points per common.
• Q: Can I use this module to directly control an AC motor?
  A: No. The module outputs DC voltage. You must use an interposing relay to switch AC loads.
• Q: What is your shipping and return policy?
  A: We ship within 5 days via major carriers and offer a 30-day return for unused items.
• Q: Does the module have built-in electronic fuses?
  A: No, the 1746-OB32 does not include electronic protection. External circuit protection is required.
• Q: What is the main application for this module?
  A: It is ideal for high-density, low-current applications like indicator lamps, buzzers, and small solenoids.