About SIEMENS PLC SM331 6ES7331-7NF10-0AB0

 SIMATIC S7-300, Analog input SM 331, isolated, 8 AI; +/-5/10V, 1-5 V, +/-20 mA, 0/4 to 20 mA, 16 bit, Single rooting (60 V COM.), 4-channel operation: 10 ms, 8-channel operation: 23-95ms, 1x 40-pole.

Data Sheet 6ES7331-7NF10-0AB0

SIMATIC S7-300 Analog Input Module SM 331 (Isolated, 8AI)
Signals: 5/10 V, 15 V, 20 mA, 0/420 mA, 16-bit
Connector: 1 40-pole

Supply Voltage

• Load voltage (L+): 24 V DC (rated)

• Reverse polarity protection: Yes

Input Current

• From load voltage L+ (no load): max. 200 mA

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

Power Loss

• Typical: 3 W

Analog Inputs

• Total inputs: 8

• Voltage destruction limit: 35 V continuous / 75 V for 1 s

• Current destruction limit: 40 mA

Supported Input Types

• Voltage: Yes

• Current: Yes

• Thermocouple / RTD / Resistance: No

Voltage Input Ranges

(Other voltage ranges: Not supported)

Current Input Ranges

(Other current ranges: Not supported)

Cable Length

• Shielded: max. 200 m

Analog Value Processing

• Resolution: 16-bit

• Integration time: 23 / 72 / 83 / 95 ms (parameterizable)

• Conversion time:

  • 4-channel: 10 ms

  • 8-channel: 2395 ms

• Interference suppression: 400 / 60 / 50 Hz

Encoder Connection

• Voltage measurement: Yes

• Current (2-wire): Yes, with external supply

• Current (4-wire): Yes

Accuracy

Operational error (full temp range):

• Voltage: 0.1%

• Current: 0.1%

Basic error at 25C:

• Voltage: 0.05%

• Current: 0.05%

Diagnostics & Alarms

• Diagnostics function: Yes

• Diagnostic alarm: Yes

• Limit value alarm: Yes (all channels)

• Hardware interrupt (channels 07): Yes

LEDs:

• SF (red): Group error

Isolation / Potential Separation

• Between channels: Yes (grouped in pairs of 2)

• Channels Backplane bus: Yes

• Channels Electronics supply: Yes

• Isolation test voltage: 500 V AC

Mechanical Data

• Front connector required: 40-pin

• Width: 40 mm

• Height: 125 mm

• Depth: 117 mm

• Weight: approx. 272 g 

Technical Details