1756-OB8 AB AB ControlLogix DC Output Module

1756-OB8 AB AB ControlLogix DC Output Module

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Product Details

The AB 1756-OB8 is a ControlLogix DC output module. It has 8 outputs available, with a maximum of 4 points per group. This module has a fused IFM that can be used to protect outputs. It is recommended to use only a 5x20mm 4A quick acting-fuse that is supplied by SOC p/n MQ2-4A for this module. Note that it is important to ground and install the chassis and power supply before installing the module with the required RTB, which can either be the 1756-TBNH or the 1756-TBSH (20 pins RTB).

This module has the following communication formats available: rack optimization, listen-only - rack optimization, output data, listen-only output data, and scheduled output data. Pilot duty is also available for the 1756-OB8 module.

The 1756-OB8 module has a voltage category of 12/24 volts DC source and an operating range of 10 to 30 volts DC. Its current draw is 165 mA at 5.1V and 2 mA at 24V. It has a backplane power of 0.89 W, with a maximum dissipation of 2.5 W at 60 Degrees Celsius (140 degrees Fahrenheit), and a thermal dissipation of 8.53 BTU/hr. The maximum off-state leakage current of this module is 1 mA per point and during an on-state, it has a maximum voltage drop of 1.2V DC at 2 A. It also has a maximum current of 2 A per point at 60 Degrees Celsius and a maximum current of 8 A at 60 Degrees Celsius per module. Its surge current per point is 4 A for 10 ms each that is repeatable every 1 s at 60 Degrees Celsius and its minimum load current is 2 mA per point. The module's isolation voltage is continuous at 250V.

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