The Allen-Bradley 1756 OF4 module is a 4-channel analog output module that provides high-speed analog output control in a ControlLogix system. The 1756 OF4 module provides four isolated, 16-bit resolution analog outputs, which can be configured for voltage or current output, and provides an output range of 0 to 10 volts DC or 0 to 20 milliamps DC.
Wiring Diagram
The wiring diagram for the 1756 OF4 module is fairly straightforward, as each channel is independent and must be wired separately. The module has four RJ45 connectors, one for each channel. The following is a step-by-step guide on how to wire the module:
Step 1: Choose the Correct Wiring Option
The 1756 OF4 module can be wired in one of two ways: voltage or current. You must select the correct option based on your application. For voltage output, set the jumper on the module to V. For current output, set the jumper to I.
Step 2: Connect Power to the Module
The 1756 OF4 module requires a power source to operate. Connect a 24-volt DC power supply to the module through the DIN rail connector. The power supply must be capable of providing a minimum of 700 mA.
Step 3: Wire the Channels
Each channel on the 1756 OF4 module has two connections: one for the positive output and one for the negative output. Connect the positive output of each channel to the positive terminal of the load, and connect the negative output of each channel to the negative terminal of the load.
If you are using voltage output, connect the positive output of each channel to the positive terminal of the load and the negative output of each channel to the negative terminal of the load. If you are using current output, connect the positive output of each channel to the negative terminal of the load and the negative output of each channel to the positive terminal of the load.
Step 4: Connect the Load
The load should be connected to the channel outputs. The load can be a motor, valve, or any other device that requires analog output control. The load should be rated for the voltage or current output of the module.
Step 5: Check Wiring
Before powering on the module, double-check all wiring connections to ensure they are correct. Incorrect wiring can damage the module or the load.
FAQ
| Question | Answer |
|---|---|
| What is the maximum output range of the 1756 OF4 module? | The maximum output range is 0 to 10 volts DC or 0 to 20 milliamps DC. |
| How many channels does the 1756 OF4 module have? | The module has four channels. |
| Can the 1756 OF4 module be wired for both voltage and current output? | No, the module can only be wired for either voltage or current output. |
| What is the minimum power supply requirement for the 1756 OF4 module? | The power supply must be capable of providing a minimum of 700 mA. |
| What kind of devices can be controlled using the 1756 OF4 module? | The module can be used to control any device that requires analog output control, such as motors, valves, or other devices. |
Conclusion
The 1756 OF4 module is a high-speed analog output module that provides precise analog output control in a ControlLogix system. The wiring diagram for the module is fairly straightforward, and each channel must be wired separately. By following the steps outlined in this article, you can ensure that your 1756 OF4 module is wired correctly and that your analog output control is working properly.
