1761-L32AWA MicroLogix 1000 32 Point Controller 120V AC PLC

Overview

1761-L32AWA is a programmable logic controller (PLC) equipped with 32 I/O points, including 20 120V AC discrete inputs and 12 relay outputs. The relay outputs can adapt to the 24-125V DC, 0-240V AC voltage range; it has a built-in 1K byte EEPROM memory, which is divided into about 737 instruction words and 437 data table words, no backup battery needed to save data. The power supply adopts 120/240V AC power supply. The power consumption is 19 VA under 120V AC and 25 VA under 240V AC. The maximum surge current can reach 30A and lasts for 8 milliseconds.

FAQ:

1. What are the voltage operating ranges of each of the 20 discrete inputs and 12 outputs of the 1761-L32AWA?

1. 20 discrete inputs: The nominal input type is 120V AC, and its actual operating voltage range is 79 – 132V AC, of ​​which the voltage range in the off state is 0 – 20V AC.
2. 12 outputs: The output type is relay output, adaptable to both AC and DC voltages, and the voltage working range covers 24-125V DC and 0-240V AC; some technical data show that the relay output range can be expanded to 5-125V DC, 5-264V AC, and can be adapted to more load equipment of different specifications.

2.What type of communication cable is required to connect to the RS-232 communication port of the 1761-L32AWA?

1. 1761-CBL-PM02 (C Series): This is a commonly used special cable adapted to this PLC. The length is 2 meters. One end is connected to the 8-pin mini DIN port of the controller, and the other end is connected to the 9-pin Sub-D communication port of the programming workstation. It can also be used to connect human-machine interfaces, data acquisition systems and other equipment. It has strong adaptability.
2. 1761- CBL-HM02 (C series): It has similar functions to the former and is also adapted to the RS-232 port of 1761 – L32AWA. It can realize functions such as program downloading and device communication, and adapt to the connection requirements of programming workstations and other equipment.
3. 1761-CBL-AM00 (C series) and 1761-CBL-AP00 (C series): These two are also dedicated communication cables for the PLC. They can meet the RS-232 port communication requirements with corresponding programming equipment and peripheral associated equipment, and can be used for program transmission and data interaction between devices.

3.1761-L32AWA does not respond to input signals during operation. What may be the causes? How to troubleshoot?

1. Wiring failure: loose terminals, broken/short circuit, electromagnetic interference. Troubleshooting: Check the wiring, use a multimeter to test continuity, and route signal lines and power lines separately.
2. Input device failure: The device is not powered or damaged. Troubleshooting: Test the power supply of the device, test the output signal when the device is triggered, and replace the device for testing.
3. PLC input circuit/hardware failure: circuit damage, poor CPU contact. Troubleshooting: Observe the channel indicator light, change the channel to test, and use programming software to perform hardware diagnosis.
4. Program/configuration error: address mismatch, logic error. Troubleshooting: Check the program input address and wiring, correct duplicate addresses/logic errors, and download the program again.
5. Abnormal power supply: The input voltage is lower than 79V AC or fluctuates. Troubleshooting: Measure the input voltage and install a voltage regulator/surge protector.