Siemens SIMATIC S7-300 Module data - Page 396

Analog Modules
4-190
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 334; AI 4/AO 2 x 8/8 bits
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 285 g
Data for Specific Module
Supports clocked
operation
No
Number of inputs 4
Number of outputs 2
Length of cable
• Shielded max. 200 m
Voltages, Currents, Potentials
Rated load voltage L + 24 VDC
Power rated voltage of the rated
electronics voltage and rated
load voltage L+
24 VDC
Isolation
• Between channels and
backplane bus
No
• Between channels and
power supply of the
electronics
Yes
Between the channels No
Permitted potential difference
• Between inputs and M
ANA
(U
CM
)
1 VDC
• Between the inputs (ECM) 1 VDC
Insulation tested with 500 VDC
Current consumption
• From the backplane bus max. 55 mA
• From power supply and
load voltage L+ (no load)
max. 110 mA
Power dissipation of the module typ. 3 W
Analog Value Generation for the Inputs
Measuring principle Instantaneous value
conversion
Integration/conversion time (per
channel)
• Parameters can be
assigned
No
• Integration time in
milliseconds
500
• Basic conversion time
including Integration time in
milliseconds
100
• Resolution including sign 8 bits
Time constant of the input
filter
max. 0.8 ms
Basic execution time of the
module (all channels enabled)
max. 5 ms
Analog Value Generation for the Outputs
Resolution including sign 8 bits
Conversion time (per channel) max. 500 s
Settling time
• For resistive load
• For capacitive load
• For inductive load
0.3 ms
3.0 ms
0.3 ms
Suppression of interference, Limits of Error for the
Inputs
Noise suppression for f = n (f1 " 1 %)
(f1 = interference frequency)
• Common-mode
interference (U
pp
< 1 V)
> 60 dB
Crosstalk between the outputs > 50 dB
Operational limit (in the entire temperature range, with
reference to the input range)
• Voltage input
• Current input
" 0.9 %
" 0.8 %
Basic error (operational limit at 25° C, referred to input
range)
• Voltage input
• Current input
" 0.7 %
" 0.6 %
Temperature error (with
reference to the input range)
" 0.005 %/K
Linearity error (with reference to
the input range)
" 0.05 %
Repeatability (in steady state at
25 C referred to input range)
" 0.05 %
Output ripple; range 0 to 50 kHz
(referred to output range)
" 0.05 %