ControlLogix 1756-OB32 Digital Output Module Overview

The ControlLogix 1756-OB32 is a high-density digital output module designed for industrial automation systems, offering robust performance and reliable output control for a wide range of applications.

Electrical Specifications

• Outputs: 32 (16 points per group)
• Voltage Category: 12/24V DC source
• Operating Voltage Range: 10…31.2V DC
• Output Delay Time:
  • Off to On: 60 µs nominal / 1 ms max
  • On to Off: 200 µs nominal / 1 ms max
• Current Draw:
  • @ 5.1V: 300 mA
  • @ 24V: 2 mA
• Total Backplane Power: 1.58 W
• Power Dissipation, Max: 4.8 W @ 60 °C (140 °F)
• Thermal Dissipation: 16.37 BTU/hr
• Off-State Leakage Current Per Point, Max: 0.5 mA
• On-State Voltage Drop, Max: 200 mV DC @ 0.5 A
• Current Per Point, Max:
  • 0.5 A @ 50 °C (122 °F) linear derating
  • 0.35 A @ 60 °C (140 °F)
• Current Per Module, Max:
  • 16 A @ 50 °C (122 °F) linear derating
  • 10 A @ 60 °C (140 °F)
• Surge Current Per Point, Max: 1 A for 10 ms, repeatable every 2 s @ 60 °C (140 °F)
• Load Current, Min: 3 mA per point

Mechanical Specifications

• Scheduled Outputs: Synchronization within 16.7 s max, reference to the Coordinated System Time
• States in Fault Mode Per Point: Hold last state, On or Off (default Off)
• States in Program Mode Per Point: Hold last state, On or Off (default Off)
• RTB Keying: User-defined mechanical
• Slot Width: 1
• Wire Category: Category 1
• Enclosure Type: None (open-style)

Environmental Specifications

• Temperature Code: T4
• Vibration Resistance: IEC 60068-2-6 (Test Fc, Operating): 2 g @ 10…500 Hz
• Shock Resistance:
  • Operating: IEC 60068-2-27 (Test Ea, Unpackaged Shock): 30 g
  • Non-operating: IEC 60068-2-27 (Test Ea, Unpackaged Shock): 50 g
• Operating Temperature Range: 0…60 °C (32…140 °F)
• Storage Temperature Range: -40…85 °C (-40…185 °F)
• Relative Humidity: 5-95%, non-condensing
• Standards Compliance: IEC 60068-2-1, IEC 60068-2-14, IEC 60068-2-2, IEC 60068-2-27, IEC 60068-2-30, IEC 60068-2-6, IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-6-4

Additional Features

• Product Series: ControlLogix
• Component Type: PLC & I/O
• Number of Digital Outputs: 32
• Digital Output Type: 12/24V DC sourcing type
• Digital Output Range: 10…31.2V DC
• Rated Current per Digital Output, Max: 0.35 A
• Rated Current per Module, Max: 10 A
• Module Specific Functions: ControlLogix DC (10…31.2V) output module, 32 (16 points/group)