Siemens | 6ES7331-7KF02-0AB0 | SIMATIC S7-300 Analog input

Overview

• Model: 6ES7331-7KF02-0AB0
• Product: SIMATIC S7-300 Analog Input SM 331
• Input Type: Isolated, 8 AI, with alarm and diagnostics

Electrical Specifications

• Rated Supply Voltage: 24 V DC
• Input Current: Max. 30 mA (without load), Max. 50 mA (from backplane bus)
• Power Loss: Typ. 1 W
• Short-circuit Protection: No (external protection required)
• Reverse Polarity Protection: Yes

Input Ranges

• Voltage:

  • 1 V to 5 V (Input resistance 100 kΩ)
  • -1 V to +1 V (Input resistance 10 MΩ)
  • -10 V to +10 V (Input resistance 100 kΩ)
  • -2.5 V to +2.5 V (Input resistance 100 kΩ)
  • -250 mV to +250 mV (Input resistance 10 MΩ)
  • -5 V to +5 V (Input resistance 100 kΩ)
  • -500 mV to +500 mV (Input resistance 10 MΩ)
  • -80 mV to +80 mV (Input resistance 10 MΩ)

• Current:

  • 0 to 20 mA (Input resistance 25 Ω)
  • -10 mA to +10 mA (Input resistance 25 Ω)
  • -20 mA to +20 mA (Input resistance 25 Ω)
  • 4 mA to 20 mA (Input resistance 25 Ω)

• Thermocouples:

  • Type E, J, K, L, N (Input resistance 10 MΩ)

• Resistance Thermometer:

  • Ni 100, Pt 100 (Input resistance 10 MΩ)

• Resistor:

  • 0 to 150 ohms, 0 to 300 ohms, 0 to 600 ohms (Input resistance 10 MΩ)

Performance & Diagnostics

• Resolution: Max. 15 bit, 9/12/14 bits (unipolar/bipolar)

• Integration Time: Parameterizable (2.5/16.67/20/100 ms)

• Basic Conversion Time: 3 / 17 / 22 / 102 ms

• Operational Error Limit:

  • Voltage: ±1%
  • Current: ±0.7%
  • Resistance: ±0.7%
  • Thermocouples: ±1.1%

• Diagnostics Function: Parameterizable

• Alarms: Diagnostic and limit value alarms, parameterizable

• LED Indications:

  • Group Error SF (red): Yes

Dimensions

• Width: 40 mm
• Height: 125 mm
• Depth: 117 mm
• Weight: 250 g

Additional Information

• Connection Method: 20-pin front connector required
• Isolation: Tested with 500 V DC
• Temperature Compensation: Internal and external with compensations socket