Triconex 3721 Analog Input Module

Description

Estimated Lead Time: 1-3 days

Manufacturer : Triconex

Product No. : 3721

Product type : Analog Input Module

Voltage : 0 to 5 VDC or -5 to +5 VDC1, + 6%

No. of Input Points : 32 differential, DC-coupled

Input Update Rate : 10 ms

Resolution : 12 bits or 14 bits programmable

Accuracy : < 0.15% of FSR from 0° to 60° C Common Mode Rejection : -85 dB (DC – 100 Hz) Input Overrange Protection : 150 VDC/115 VAC continuous Weight : 1.36 Kg Shipping Weight : 4 Kg In terms of structure, PLC is divided into fixed type and combined type (modular type). Fixed PLC includes CPU board, I/O board, display panel, memory block, power supply, etc. These elements are combined into a non-removable whole. Modular PLC includes CPU module, I/O module, memory, power module, backplane or rack. These modules can be combined and configured according to certain rules. CPU composition CPU is the core of PLC and plays the role of nerve center. Each set of PLC has at least one CPU. It receives and stores user programs and data according to the functions given by the system program of PLC. It collects the status or data sent by the field input device by scanning, and stores them in the specified register. At the same time, it diagnoses the working status of power supply and PLC internal circuit and syntax errors in the programming process. After entering the operation, read the instructions one by one from the user program memory, and after analysis, generate corresponding control signals according to the tasks specified by the instructions to command the relevant control circuits. CPU is mainly composed of arithmetic unit, controller, register and data, control and status bus to realize the connection between them. CPU unit also includes peripheral chips, bus interface and related circuits. Memory is mainly used to store programs and data, and is an indispensable component of PLC. From the user's point of view, it is not necessary to analyze the internal circuit of the CPU in detail, but there should be sufficient understanding of the working mechanism of each part. The controller of the CPU controls the work of the CPU. It reads instructions, interprets instructions and executes instructions. However, the work rhythm is controlled by the vibration signal. The arithmetic unit is used for digital or logical operations, and works under the command of the controller. The register participates in the operation and stores the intermediate result of the operation. It also works under the command of the controller. CPU speed and memory capacity are important parameters of PLC. They determine the working speed, IO quantity and software capacity of PLC, and therefore limit the control scale.