The Allen Bradley 1771-OQ is a digital output module in the Rockwell PLC-5 system. Its function is exactly the opposite of the it input module. It is responsible for transmitting on-site signals to the PLC, while this OQ module is responsible for receiving instructions from the PLC to control the switches of external devices. It belongs to the relatively old 1771 series and is a large component that needs to be inserted into the rack. However, it remains an indispensable pillar in many old factories. If you are looking for replacement parts for old equipment and need to buy this module, it is particularly important to choose a reliable supplier. We guarantee that every product we have is an original and brand-new one, which can ensure the stable operation of your equipment. Avoid using second-hand or refurbished goods, as it would be troublesome if the equipment suddenly stops running one day.
The core function of this device is a switch, but it doesn't need to be manually pressed. Instead, it will operate according to the instructions of the PLC. The PLC performs calculations in the program and will issue instructions for the lights to turn on or the valves to open, and then it will send signals to 1771-OQ. Once this module receives the signal, it will click and connect the corresponding circuits, providing power to the external indicator lights, solenoid valves or motors, enabling them to function properly. Since the model contains the letter "Q", it is specifically designed to handle 220-volt alternating current. It doesn't care about direct current.
The benefits of using the Allen Bradley 1771-OQ product are numerous. Firstly, it is extremely safe because it has a barrier that separates the dangerous 220-volt high voltage electricity from the PLC's 5-volt low voltage electricity. Even if there is a problem with the external wiring, it will not damage the PLC. It is sturdy and durable, and is manufactured using the same materials as the older industrial-grade products. It performs exceptionally well in factory environments with noisy and chaotic conditions, and the possibility of faults is relatively low. The most convenient feature is that each output point has a small indicator light. Once it starts working, the light will turn on. If the equipment stops running, you just need to look at the state of the light to know whether it is on or off. This allows you to immediately determine whether the PLC has not issued an instruction, or if there is a problem with the module itself or the external wires, making fault diagnosis very rapid.
Sensor detection
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PLC decision
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Allen Bradley 1771-OQ execution
1.Specific application scenarios 1.Because the Allen Bradley 1771-OQ is an output communication module, it is specifically used in places where 220V/110V AC electrical equipment needs to be controlled, especially on those old equipment that have been in operation for many years.
2.On large production lines, such as automobile manufacturing plants or food processing plants, its presence can be seen everywhere. Workers use it to control the motors of conveyor belts, pumps in hydraulic stations, and electromagnetic valves that push products or clamp workpieces.
3.In some chemical plants or water treatment systems, it is also the main force. Engineers use it to start and stop high-power AC water pumps or control AC valves on pipelines for regulating flow.
4.In addition, many old building automation systems also cannot do without it. It is used to centrally control the air conditioning fans, domestic water pumps and public lighting of entire buildings.
5.Many large equipment manufacturers, such as those producing injection molding machines and packaging machines, also extensively use this module to integrate various AC output control functions within their early models.
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