Allen Bradley 1766-L32BXBA Micrologix 1400 PLC CPU Module

Manufacturers: Allen-Bradley

Model(s): Allen-Bradley MicroLogix, Allen-Bradley MicroLogix 1400

Alternative part number: 1766-L32BXBA/A, 1766-L32BXBA/B, 1766-L32BXBA/C

Additional Information: 12 Digital fast 24V DC Inputs, 8 Digital 24V DC Inputs, 6 Relay Outputs, 3 Fast 24V DC Outputs, 3 Normal 24V DC Outputs, 4 Analog (12 bits) Inputs, 2 Analog (12 bits) Outputs, 24V DC Power

1766-L32BXBA is a MicroLogix programmable logic controller (PLC). The controller is characterized by a compact controller, it also supports expansion, up to seven (7) 1762 MicroLogix I/O expansion modules can be installed. It is a cost-effective electronic device used to automate small applications in various industrial applications. The controller is also equipped with multiple communication channels, allowing simultaneous communication with multiple partners, such as human-machine interface (HMI), monitoring and data acquisition (SCADA), distributed control system (DCS), for process control (OPC) ) Server OLE, protocol converters, gateways, databases, reporting tools, and other industrial applications.

This embedded discrete I/O of this controller amounts to 32 I/O which comprise of Twelve (12) Fast 24VDC, Eight (8) Normal 24VDC, Six (6) Relay, Three (3) Fast DC, and Three (3) Normal DC outputs. As indicated by the letter ÒAÓ in the part number, this controller has embedded Two (2) Voltage inputs and Two (2) Voltage outputs.

The compatible voltage range of the analog input channel is 0-10VDC, and the resolution is a 12-bit unsigned integer. Embedded channels do not support loop power, which means that external power supply must be installed to power the connected device. The analog input will be converted to a 12-bit unsigned integer, also known as raw data. Use analog calibration instructions to further process this raw data and save it in data formats such as engineering units, raw/scale, PID scale, and percentage range. The analog input supports 2-wire, 3-wire, and 4-wire transmitters. The analog output channel is also a 12-bit resolution channel, and the output voltage range is 0-10VDC. Use the analog output to control regulating equipment, such as control valves and variable frequency drives (VFD).

1766-L32BXBA also installs a real-time clock. This component allows the execution of the logical processing of the scheduling, which is a typical method in the actuation of equipment and equipment for scheduling a controlled process. This is usually achieved in the manufacturing, HVAC, water and wastewater applications, and its main purpose is to evenly distribute equipment and equipment operating time in addition to automatic startup and shutdown.

The integrated communication channel of the module includes an isolated RS232/RS485 combination port, a non-isolated RS232 communication port, and an Ethernet communication port. The protocol supported by the serial communication port is DF1 full-duplex and half-duplex, DNP3, MODBUS RTU, ASCII, and DH485, while for Ethernet, it supports MODBUS TCP, DNP3, and Ethernet I/P.

The internal memory of the controller is 20KB, backed up by the 1746-BA battery to keep this memory. The internal memory is allocated to the 10KB user program and 10KB Program data. The controller has a battery to indicate the battery level. The controller also has a memory for data recording, a total of 128KB and the memory for recipes is 64KB. If the battery is exhausted, the battery must be replaced with the active power provided to the controller, otherwise, the content in the memory will be deleted. To prevent unnecessary erasure of the program due to exhaustion of battery power, please install a 1766-MM1 memory module with 20KB of memory. This memory module is non-volatile memory and does not require a battery to save its contents.

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