Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-99
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 331; AI 8 x 14 bit High Speed
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 230 g
Data for Specific Module
Supports clocked operation Yes
Number of inputs 8
Length of cable
• Shielded max. 200 m
Voltages, Currents, Potentials
Rated supply voltage of the
electronics L +
24 VDC
• Reverse polarity
protection
Yes
Power supply of the
transmitters
• Supply current max. 30 mA (per channel)
• Short-circuit-proof Yes
Isolation
• Between channels and
backplane bus
Yes
• Between the channels No
• Between channels and
power supply of the
electronics
Yes
Permitted potential
difference
• Between inputs and
M
ANA
(UCM)
– At signal = 0 V
– Not for 2-wire
transmitter
VDC 11/VAC 8 V
• Between the inputs
(E
CM
)
VDC 11/VAC 8 V
• Between M
ANA
and
M
internal
(U
ISO
)
75 VDC / 60 VAC
Insulation tested with
• Channels against back
plane bus and load
voltage L +
500 VDC
Current consumption
• From the backplane bus max. 100 mA
• From load voltage L +
(without 2–wire
transducer)
max. 50 mA
Power dissipation of the
module
typ. 1.5 W
Analog value generation
Measuring principle Instantaneous value
conversion
Integration time/conversion
time/ resolution (per
channel)
• Parameters can be
assigned
Yes
• Basic conversion time
per channel
52 s
• Resolution (incl.
overrange)
14 bits
• Noise suppression for
frequency f1 in Hz
None 400 60 50
• Basic execution time of
the module
(independent of the
number of released
channels)
0.42 ms
Suppression of interference, Limits of Error
Noise suppression for f = n (f1 " 1 %),
(f1 = interference frequency) n=1.2...
• Common-mode
interference
(U
CM
< 11 V
SS
)
> 80 dB
• Series-mode
interference(peak value
of interference < rated
value of input range)
> 40 dB
Crosstalk between the
inputs
> 65 dB
Operational limit (in the entire temperature range, with
reference to the input range)
• Voltage input " 1 V " 0.3 %
" 5 V " 0.4 %
" 10 V " 0.3 %
1 to 5 V; " 0.4 %
• Current input " 20 mA " 0.3 %
0 to 20 mA; " 0.3 %
4 to 20 mA: " 0.3 %

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)