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Allen Bradley | PLC-5 | 1771-OA | Image

Allen Bradley | PLC-5 | 1771-OA | Image Allen Bradley | PLC-5 | 1771-OA | Image

SKU 2173016  UPC 0799705797444

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The Allen-Bradley 1771-OA is an AC output module with 8 outputs. The module occupies a single slot in the Input/Output chassis and it has a voltage range (output) of between 92 and 138 Volts AC at 47 to 63 Hertz. The output current rating for the 1771-OA module is 1.5 Amps per output module and it is a maximum of 6 Amps per module. The module’s maximum surge current is 4 Amps per output at 120 Volts AC for a period of 8.3 milliseconds (at 1-second repetition), a minimum load current of 50 milliamps/output at 120 Volts at 60 Hertz.

The on-state voltage drop for the 1771-OA module is rated at 2 Volts at 100 milliamperes and a maximum off-state leakage current of 5 milliamps/output at 120 Volts AC. The 1771-OA has an off-on signal delay of 1 milliseconds and an on-off delay of 8.3 milliseconds at 60 Hertz. The 1771-OA AC output module draws a current (from the backplane) of 210 milliamperes at 5 Volts DC, +/-5 percent. The power dissipation rating for the module is at 10.7W (maximum) and it is a minimum of 1.1W, its thermal dissipation rating is a maximum and minimum of 36.6 and 3.4 BTU per hour, respectively.

The 1771-OA module uses the 1771-WA field wiring arm which has a wiring screw torque of 7 to 9 pounds on an inch. Additionally, the 1771-OA uses keying pins between 4 and 6 and 12 and 14 and uses a fuse rated 2 Amps, 250 Volts. For monitoring and troubleshooting, the 1771-OA module has 9 LED indicators (one for each output channel and one to cater for the blown fuse). A single 1771-OA output channel can be used to drive a motor starter (max. size 4) when the supply voltage is greater than or equal to 92 Volts.


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