SIEMENS S7-300 PLC

The Siemens S7-300 PLC (6ES7321-1BP00-0AA0) is a robust and compact module designed for effective industrial automation solutions. With a rated voltage of 24V DC and a power rating of 1.5W, this PLC ensures stable and energy-efficient operation. The device operates seamlessly within a frequency range of 50/60 Hz and can withstand environments with up to 95% humidity, providing reliable performance in challenging conditions. Its IP20 protection level and operating temperature range of -20C to +60C ensure durability and safe functionality. Featuring a compact dimensional profile of 40 x 125 x 112 mm and a lightweight design of 230g, the S7-300 PLC supports DIN-rail mounting, making installation quick and efficient. The central processing unit comes with MPI interface, integrated power supply, and 32 KB work memory, delivering excellent computing power for system control. This PLC is equipped with a 40-pin connection for ease of integration and benefits from 500V DC isolation. It is ideally suited for automation tasks in manufacturing, process controls, and plant operations.

Siemens 6ES7321-1BP00-0AA0 SM 321 Digital Input Module

Spare Part SIMATIC S7-300

Type: Digital Input Module (SM 321)
Inputs: 64 DI, 24 V DC
Input Type: Sinking/Sourcing
Input Groups: Isolated in groups of 16
Required Accessories:

• Terminal blocks: 6ES7392-1*N00-0AA0

• Cable: 6ES7392-40-0AA0

Electrical Specifications

Supply Voltage

• Rated value (DC): 24 V

• Reverse polarity protection: Yes

Input Current

• From backplane bus (5 V DC): max. 100 mA

Power Loss

• Typical: 7 W

Digital Inputs

• Number of digital inputs: 64

• Input characteristic: IEC 61131 Type 1

Simultaneously Controllable Inputs

• All mounting positions

  • Up to 40C: 64

  • Up to 60C: 32

• Horizontal installation

  • Up to 40C: 64

  • Up to 60C: 32

• Vertical installation

  • Up to 40C: 32

Input Voltage & Current

• Type: DC

• Rated value: 24 V

• Signal 0: 30 to +5 V

• Signal 1: 13 to 30 V

• Input current for signal 1: typ. 4.2 mA

Input Delay (at rated voltage)

• Parameterizable: No

• Typical delay: 4.2 ms

• 0 1: 1.2 to 4.8 ms

• 1 0: 1.2 to 4.8 ms

Cable Length

• Shielded: max. 1000 m

• Unshielded: max. 600 m

Encoders

• 2-wire sensors: Not supported

Diagnostics & Status

• Alarms: No

• Diagnostics function: No

• Diagnostic alarm: No

• Hardware interrupt: No

• Diagnostic info readable: No

• Wire break detection: No

LED Indicators

• Group Error (SF red): No

• Input Status (green): Yes

• Encoder supply Vs (green): No

Isolation

• Channels isolated in groups of 16

• Isolation from backplane bus: Optocoupler

• Tested with 500 V DC

Connection Method

• Required front connector:

  • Cable: 6ES7392-4Bxx0-0AA0

  • Terminal blocks: 6ES7392-1xN00-0AA0

Mechanical Data

• Width: 40 mm

• Height: 125 mm

• Depth: 112 mm

• Weight: approx. 230 g
  
  

Technical Details 

FAQs of SIEMENS S7-300 PLC: