Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-88
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 331; AI 8 x 16 bits
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 272 g
Data for Specific Module
Supports clocked
operation
No
Number of inputs 8
Length of cable
• Shielded max. 200 m
Voltages, Currents, Potentials
Power rated voltage of the
electronics L+
24 VDC
• Reverse polarity protection Yes
Isolation
• Between channels and
backplane bus
Yes
• Between channels and
power supply of the
electronics
Yes
• Between the channels
In groups of
Yes
2
Permitted potential difference
• Between the inputs (ECM) 75 VDC / 60 VAC
• Between M
ANA
and
M
internal
(U
ISO
)
75 VDC / 60 VAC
Insulation tested with 500 VAC
Current consumption
• From the backplane bus max. 100 mA
• From the power supply L+ max. 200 mA
Power dissipation of the module typ. 3.0 W
Analog value generation
Measuring principle Integrating
Integration time/conversion
time/ resolution (per channel)
• Parameters can be
assigned
Yes
• Basic conversion time in
ms (8-channel mode)
95/83/72/23
• Basic conversion time in
ms (4-channel mode)
10
1)
• Resolution including sign 16 bits
• Noise suppression for
frequency f1
in Hz
All
2)
/50/60/400
Smoothing of the measured
values
None / low/
average/ high
Basic execution time of the
module, in ms
(8-channel-mode)
190/166/144//46
Basic execution time of the
module, in ms
(4-channel-mode)
10
1)
Suppression of interference, Limits of Error
Interference suppression for
F = n x (f1 ± 1%) (f1 = interference frequency, n = 1, 2,
...)
• Common-mode
interference (U
cm
< AC 60
V)
> 100 dB
• Series-mode interference
(peak value of interference
< rated value of input
range)
>90 dB
3)
Crosstalk between the inputs > 100 dB
Operational limit (in the entire temperature range, with
reference to the input range)
• Input voltage $0.1%
• Input current $0.1%
Basic error (operational limit at 25 °C, referred to input
range)
• Voltage input $0.05%
• Current input $0.05%
Temperature error (with
reference to the input range)
$0.005%/K
Linearity error (with reference to
the input range)
$0.01%
Repeatability (in steady state at
25 °C, referred to the input
range)
$0.01%
Status, interrupts, diagnostics
Interrupts
• Hardware interrupt if the
limit value is exceeded
Programmable
channels 0 – 7
• Hardware interrupt at end
of cycle
Parameters can be
assigned
• Diagnostic interrupt Parameters can be
assigned
Diagnostic functions Parameters can be
assigned
• Group error display Red LED (SF)
• Diagnostics information
read-out
Possible

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)