Allen Bradley 1956-OB16E is a discrete output module that is part of the ControlLogix programmable automation controller (PLC) platform. This module is a DC output module with an output voltage range of 10-31.2 VDC and a nominal value of 24VDC. It has sixteen (16) output channels, divided into two (2) electron fusion groups, each with eight (8) channels. This module is typically used to drive 24VDC rated equipment, such as relay coils, solenoid drive devices, indicator lights, alarms, and other similar electrical loads. 1756-OB16E is a single slot wide module that is compatible with any 1756 ControlLogix controller. It can be installed on any 1756 ControlLogix rack, especially 1756-A4; 1756-A17; In 1756, A10; 1756-A13 and 1756-A17. In addition, it can also serve as a local I/O or distributed I/O component. 1756-OB16E provides an output current of 1 A for each channel at 60 ° C (140 ° F), or 8 A for each module at 60 ° C (140 ° F). Its surge current rating is 2 A, 10 ms per point, repeated every 2 seconds at 24 V DC at 0 ° C (32 ° F). In addition, the minimum load current of the module is 3 mA per channel. Each group provides built-in electronic fuses. The maximum off to on output delay time for each output channel is 70 s nominal value/1 ms, and the maximum on to off delay time is 360 s nominal value/1 ms. The current it draws from the backplane is 250 mA at 5V DC and 2 mA at 24V DC, with a total power consumption requirement of 1.32 watts and a maximum power consumption of 4.1 W (60 ° C (140 ° F)).

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