Mitsubishi Electric AL2 4EX A2, AL2 4EX, AL2 4EYR, AL2 4EYT v2 Installation Manual
![Mitsubishi Electric AL2 4EX A2, AL2 4EX, AL2 4EYR, AL2 4EYT manual cover](/images/7b8bd520397eb25040005f7a/thumbs/thumb175x175.webp)
The Mitsubishi Electric AL2 series modules require a power supply of 24V DC. Ensure that the power supply is stable and within the specified voltage range to avoid any operational issues.
To connect additional input modules to the AL2 4EX A2 controller, use the dedicated expansion ports. Ensure that all connections are secure and follow the wiring diagram provided in the user manual.
The AL2 4EX module can operate within a temperature range of 0°C to 55°C. Make sure the installation location is well-ventilated to avoid overheating.
To perform a factory reset on the AL2 4EYR unit, disconnect the power and locate the reset jumper on the circuit board. Move the jumper to the reset position, reconnect the power, and then move the jumper back to its original position.
If the AL2 4EYT module is not responding, first check the power supply and connections. Ensure that the input/output devices are correctly wired. If the issue persists, consult the diagnostic LEDs for error codes and refer to the troubleshooting section in the manual.
Yes, firmware updates for the AL2 4EX A2 controller can be performed via the manufacturer's software tool. Connect the controller to a PC using the appropriate communication cable, and follow the update instructions provided in the software documentation.
Regular maintenance should be performed at least once a year. This includes checking all electrical connections, cleaning the module to prevent dust accumulation, and verifying that all inputs/outputs are functioning correctly.
The AL2 4EYR module is designed for indoor use. If outdoor installation is necessary, ensure that it is housed within a suitable enclosure that provides protection against dust, moisture, and temperature extremes.
To replace a faulty output relay in the AL2 4EX model, first power down the module. Carefully remove the module from its mounting, unscrew the faulty relay from its position, and replace it with a compatible relay. Reassemble and test the module before returning it to service.
The AL2 4EYT inputs can be configured via the programming software. Select the input channel, specify the sensor type (e.g., NPN/PNP, voltage, etc.), and adjust the settings according to the sensor specifications. Refer to the manual for detailed configuration steps.