Siemens SIMATIC S7-200 - EM 231 and EM 235 Specifications; Definitions of the Analog Specifications; Agency Standards

S7-200 Specifications
A-49
S7-200 Programmable Controller System Manual
A5E00066097-02
Table A-15 EM 231 and EM 235 Specifications
F ll Scale Inp t Range
Repeatability
1
Mean (average) Accuracy
1,2,3,4
Full Scale Input Range
% of Full Scale Counts % of Full Scale Counts
EM 231 Specifications
0 to 5 V
0 to 20 mA
± 24 ± 0.01%
0 to 10 V
± 0.075%
±
24
±
0.01%
± 32
± 2.5 V
±
0.075%
± 48
± 0 05%
±
32
± 5 V
± 48 ± 0.05%
EM 235 Specifications
0 to 50 mV ± 0.25% ± 80
0 to 100 mV ± 0.2% ± 64
0 to 500 mV
0 to 1 V
± 0.075% ± 24
0 to 5 V
± 0.075%
± 24
± 0.05% ± 16
0 to 20 mA
± 0.05%
± 16
0 to 10 V
± 25 mV ± 0.25% ± 160
± 50 mV ± 0.2% ± 128
± 100 mV ± 0.1% ± 64
± 250 mV
± 500 mV
± 0.075% ± 48
± 1 V
± 0.075%
± 48
± 0 05%
± 32
± 2.5 V
± 0.05% ± 32
± 5 V
± 10 V
1
Measurements made after the selected input range has been calibrated.
2
The offset error in the signal near zero analog input is not corrected, and is not included in the accuracy specifications.
3
There is a channel-to-channel carryover conversion error, due to the finite settling time of the analog multiplexer. The
maximum carryover error is 0.1% of the difference between channels.
4
Mean accuracy includes effects of non-linearity and drift from 0 to 55 degrees C.
Definitions of the Analog Specifications
• Accuracy: deviation from the expected value on a given point.
• Resolution: the effect of an LSB change reflected on the output.
Agency Standards
These modules adhere to the following agency standards: UL 508 Listed
(Industrial Control Equipment); CSA C22.2 Number 142 Certified (Process Control
Equipment); FM Class I, Division 2, Groups A, B, C, & D Hazardous Locations,
T4A; VDE 0160: Electronic equipment for use in electrical power installations;
European Community (CE) Low Voltage Directive 73/23/EEC, EN 61131-2:
Programmable controllers - Equipment requirements; European Community (CE)
EMC Directive 89/336/EEC.