ALLEN BRADLEY 1771-OBD OUTPUT MODULE

Brand: Allen-Bradley

General Specifications:

• Wiring Arm Screw Torque: 7-9 inch-pounds

  • Indicates the recommended torque range (7-9 inch-pounds) for securing the wiring arm screws.

• Field Wiring Arm Compatibility: 1771-WH; 1771-WHF; 1771-WHFB

  • Specifies the compatibility of the module with different field wiring arms, including 1771-WH, 1771-WHF, and 1771-WHFB.

• Keying: Between 10 and 12; Between 22 and 24

  • Describes the keying options, allowing compatibility between keying 10 and 12, as well as keying 22 and 24.

• Compatible Chassis: 1771 I/O chassis

  • Indicates the compatibility of the module with 1771 I/O chassis, ensuring proper integration into the system.

• Thermal Dissipation: 53.3 BTU/hr

  • Specifies the thermal dissipation of the module, measured in British Thermal Units per hour (BTU/hr).

• Power Dissipation: 15.6 Watts

  • States the power dissipation of the module, indicating the amount of power it consumes during operation.

• Minimum Load Current: 2.5 mA

  • Specifies the minimum load current required for proper functioning of the module.

• Maximum Surge Current: 4 A per output for 10 ms, repeatable every 2 s; 25 A per output for 10 ms, repeatable every 2 s

• Describes the maximum surge current the module can handle per output for specific durations, with repeatable intervals.

• Output Specifications:

• Output Current Rating per Channel:

  • 2 A per output resistive, not to exceed 8 A per module
  • 0.2 A per output pilot duty

  This indicates that each output channel can handle a current of up to 2 A for resistive loads, with a maximum limit of 8 A for the entire module. Additionally, for pilot duty applications, each channel can handle up to 0.2 A.

• Nominal Output Voltage: 48 VDC Indicates the nominal or standard output voltage, which is 48 volts DC.

• Operating Voltage Range: 10-60VDC Specifies the acceptable range of operating voltages, ensuring functionality within the range of 10 to 60 volts DC.

• Number of Outputs: Sixteen (16) outputs Indicates the quantity of output channels available on the module, totaling sixteen outputs.

• Module Information:

  • Series: 1771 Product Bulletin

    • This module belongs to the 1771 series, as outlined in the product bulletin.

  • Part Number/Catalog No.: 1771-OBD

    • The unique identifier or catalog number assigned to this discrete output module.

  • Module Type: Discrete output module

    • This module functions as a discrete output module, indicating it is designed for handling digital outputs.

  • Number of Outputs: 16 Outputs

    • The module is equipped with 16 discrete output channels.

  • Voltage Category: 10 to 60 Volts DC, Source

    • The permissible voltage range for this module is from 10 to 60 Volts DC, and it operates as a source for the connected devices.

  • DC Operating Voltage: 10 to 60 Volts

    • The specified operating voltage range for the module is from 10 to 60 Volts DC.

  • Backplane Current: 400 Milliamps

    • The current drawn from the backplane of the system by the module is 400 milliamps.

  • Max Continuous Current Per Output: 2 Amps

    • Each output channel can handle a maximum continuous current of 2 Amps.

  • Max Continuous Current Per Module: 8 Amps

  • The entire module can sustain a maximum continuous current of 8 Amps.

  • Additional Details:

    • Wiring Arm: 1771-WH or 1771-WHF

      • Compatible wiring arms for this module are either 1771-WH or 1771-WHF.

    • Coating: Conformal Coat

      • The module is coated with a conformal coat, which is a protective coating to enhance resistance against environmental factors.

    • Data Format: BDC or Natural Binary

      • The supported data formats are BDC (Binary Coded Decimal) or Natural Binary.

    • Typical AC Signal Delay (Off): 45 (+/- 15) milliseconds

      • The typical signal delay for AC signals to turn off is 45 milliseconds with a variation of +/- 15 milliseconds.

    • Typical DC Signal Delay (Off): 50 milliseconds

      • The typical signal delay for DC signals to turn off is 50 milliseconds.

    • Mounting: Rack Mountable

      • The module is designed to be rack-mountable, facilitating its installation within a rack structure.