1771-OWNA/A Allen Bradley 1771 Series I / O Digital Output Module
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1771-OWNA/A Allen Bradley 1771 Series I/O Digital Output Module
Product Specificaion
Product Details The controller or I/O chassis power supply, connected through the backplane of the I/O chassis, powers the logic circuitry of the contact output modules. This supply also provides the necessary power to energize the coils of the module relays. The maximum current drawn from this supply when all coils are energized is 2.5A. Nominal backplane current is 1.8A.
The module has 32 status indicators on the module front plate. These represent the control status of the outputs. Each indicator is lit when its corresponding output is energized. An additional indicator is provided to indicate a blown fuse condition.
The 1771–OWNA module is a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771–IN075 for detailed information on acceptable chassis, proper installation and grounding requirements. Limit the maximum adjacent slot power dissipation to 10W maximum.
The outputs are arranged in 4 groups of 8, each group with its own common. The module can simultaneously switch all 32 outputs to separate loads, with a maximum of 12A per module. Each output can conduct a maximum load of 1.0A continuously at 30W at 45oC, and 15W at 60oC maximum. Ac loads switched by the modules should have a power factor (PF) of 1.0. Maximum interconnect cable length for this module is 1000 ft. (304.8 meters).
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