Siemens SIMATIC User Manual

Analog modules
6.9 Analog input module SM 331; AI 8 x RTD; (6ES7331-7PF01-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
383
Technical specifications
Technical specifications
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight
approx. 272 g
Module-specific data
Configuration in RUN possible
Yes
Behavior of the non-configured inputs Provides the last valid process value before the
parameter assignment
Supports isochronous operation
No
Number of inputs
8
Cable length
• Shielded
max. 200 m
Voltages, currents, potentials
Supply voltage of the electronics L+
• Reverse polarity protection
24 V DC
Yes
Constant measurement current for resistance-type transmitter
max. 5 mA (pulsed)
Electrical isolation
• Between channels and backplane bus
• between channels and electronics power supply
• Between the channels
In groups of
Yes
Yes
Yes
2
Insulation tested with
500 V DC
Current consumption
• From backplane bus
• from supply voltage L+
max. 100 mA
max. 240 mA
Power loss of the module
typ. 4.6 W
Analog value formation
Measuring principle
Integrating
Mode
8-channel mode (hardware filter)
Integration/conversion time/resolution (per channel)
• Configurable
• Basic conversion time in ms
• Additional conversion time for resistance measurement in ms
• Additional conversion time for wire break monitoring in ms
• Resolution (including overrange)
• Interference voltage suppression at interference frequency f1 in
Hz
Yes
80
100*
0
16-bit (including sign)
400 / 60 / 50
Smoothing of the measured values None/Weak/Medium/Strong
Conversion time (per channel)
100 ms
Basic execution time of the module (all channels enabled)
200 ms

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)