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Allen Bradley PLC 5 1771-OBDS

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1771-OBDS

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The 1771-OBDS digital output module is a current limiting type of output module that operates on DC voltage. It has been manufactured by Allen-Bradley/Rockwell Automation in the PLC 5 series. The 1771-OBDS current limiting digital output module has 16 outputs, its voltage category is 10 to 60 Volts DC, and its operating voltage range is 10 to 40 Volts DC. This digital output module does not have an enclosure, but it does have a conformal coating for protection against corrosion and liquids. The 1771-OBDS current limiting digital output module is designed to be immune to ESD or electrostatic discharge, and it can withstand 4 kilovolts of contact discharge and 8 kilovolts of air discharge.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1771-OBDS

ManufacturerAllen Bradley
CategoryPLCs
Product LinePLC 5
Part Number1771-OBDS
Weight2.81 lbs (1.28 kg)
Module TypeDigital DC Output Module
Number of Outputs16 Outputs
Voltage Category10-60 Volts DC, Source
DC Operating Voltage10-40 Volts
Backplane Current300 Miliamperes
Max Continuous Current Per Output1 Ampere
Max Continuous Current Per Module8 Amperes
Wiring Arm1771-WH
CoatingConformal Coat
Data FormatBDC or Natural Binary
Typical AC Signal Delay (Off)45 (+/- 15) ms
Typical DC Signal Delay (Off)50 ms
MountingRack Mountable
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The Allen Bradley 1771-OBDS is a DC Current Limiting Output module, which comes with 16 outputs. Its maximum on state voltage drop is 1.5 Volts, and its maximum off state leakage current is 0.5 mA per output.

The 1771-OBDS has a power dissipation of maximum 14 Watts and minimum 2 Watts; its thermal dissipation is 47.8 BTU/hour at its maximum and 6.9 BTU/hour at minimum.

With an operating temperature of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) and a nonoperating temperature of -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit), this unit is capable of withstanding many different conditions. Additionally, the relative humidity of this unit can normally stay between 5% and 95% without condensation.

The Isolation voltage of this module has been tested to withstand 500 Volts for 60 seconds, while its ESD immunity is 4 kV contact discharges and 8 kV air discharges.

The 1771-OBDS is supplied as open type equipment, intended for use in industrial environments that do not exceed Pollution 2 (as defined in EN / IEC0664-1) when applied in a Zone 2 environment; additionally, the enclosure should be accessible only by means of the appliance. After checking the fuse, check the field wiring arm to be sure it is firmly in place. Do this before checking the status of the other indicators.

Revision Part #Also known as
1771-OBDS Ser A1771-OBDS/A, Series A, Rev A
1771-OBDS Ser B1771-OBDS/B, Series B, Rev B
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