About SIEMENS PLC MODULES 6ES7331-7PF11-0AB0

The Siemens 6ES7331-7PF11-0AB0 is a digital output module for the SIMATIC S7-300 series of programmable logic controllers (PLCs). This module is used to control external devices that require digital output signals, such as actuators, relays, and other field devices. It is designed to interface with the S7-300 system, providing reliable and precise control of external hardware.

Key Features of the 6ES7331-7PF11-0AB0 (Digital Output Module):

• Digital Outputs: The 6ES7331-7PF11-0AB0 offers 16 digital output channels to control external devices, such as motors, valves, or relays. Each output can provide a signal to control the connected device, enabling it to switch on or off.

• 24V DC Output Signals: The module is designed to work with 24V DC digital output signals, which is a standard for controlling devices in many industrial automation systems.

• High Current Capacity: It is capable of handling higher current outputs, making it suitable for controlling devices that require more power, such as actuators or solenoids.

• Fast Switching Time: The module offers fast switching times, enabling rapid control of external devices. This feature is essential in applications where precise timing and high-speed switching are required.

• Signal Status and Diagnostics: The module includes diagnostic features that allow for monitoring the health and status of each output channel. This helps detect potential issues and enables easier troubleshooting and maintenance.

• Modular Design: As part of the S7-300 modular I/O system, the module can be integrated easily with other modules and PLC components, enabling flexible and scalable automation systems.

• Configuration through Step 7: The module can be configured and programmed using Step 7, Siemens engineering software platform, ensuring easy integration and setup within automation projects.

Data Sheet SM 331 Analog Input Module

Article No.: 6ES7331-7PF11-0AB0
SIMATIC S7-300 8 AI Thermocouple, Isolated

Supply Voltage

• Load voltage L+: 24 V DC (rated)

• Reverse polarity protection: Yes

Input Current

• From L+ (without load): max. 240 mA

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

Power Loss

• Typical: 3 W

Analog Inputs

• Number of inputs: 8

• Max permissible input voltage:

  • 20 V DC continuous

  • 75 V DC for 1 second (1:20 duty)

• Constant measurement current: 0.7 mA (typ.)

Supported Input Types

Voltage Input Not supported

Current Input Not supported

Thermocouples Supported

• Types: B, C, E, J, K, L, N, R, S, T, U, TXK/TXK(L) (GOST)

Resistance Thermometer Not supported

Resistance Inputs Not supported

Thermocouple Functions

• Temperature compensation:

  • Parameterizable: Yes

  • Internal compensation: Yes

  • External compensation (Pt100): Yes

  • External compensation socket: Yes

  • Define comparison temperature: Yes

• Linearization: Yes

• Cable length (shielded): max. 100 m

Analog Value Processing

• Resolution (including sign): 16-bit, twos complement

• Integration time: Parameterizable

• Conversion time per module:

  • Up to 4 channels: 10 ms

  • 5 channels+ : 190 ms

• Interference suppression: 400 / 60 / 50 Hz

Accuracy

Operational error (full temperature range)

• Thermocouples:

  • T: 0.18%

  • U: 0.15%

  • E: 0.12%

  • J: 0.12%

  • L: 0.17%

  • K: 0.15%

  • N: 0.17%

  • R: 0.08%

  • S: 0.10%

  • B: 0.13%

  • C: 0.10%

  • TXK/XK(L): 1.0% (lower range)

Basic error at 25C

• T: 0.13%

• U: 0.08%

• E: 0.05%

• J: 0.04%

• L: 0.06%

• K: 0.04%

• N: 0.04%

• R: 0.03%

• S: 0.03%

• B: 0.05%

• C: 0.02%

• TXK/XK(L): 0.67% (lower range)

Diagnostics / Alarms

• Diagnostic functions: Yes, parameterizable

• Diagnostic alarm: Yes

• Limit value alarm: Yes

• Hardware interrupt (channels 07): Yes

• Diagnostic info readable: Yes

• LED indication:

  • SF (red): Yes

Isolation / Potential Separation

• Between channels: Yes

• Between channels (groups of 2): Yes

• Between channels and backplane bus: Yes

• Between channels and electronics supply: Yes

• Tested at: 500 V DC

Connection

• Required front connector: 40-pin

Mechanical Data

• Width: 40 mm

• Height: 125 mm

• Depth: 120 mm

• Weight: 272 g 

Technical Details