Siemens SIMATIC S7 - RTD Expansion Modules (Ems)

Technical specifications
A.5 Thermocouple and RTD expansion modules (EMs)
S7-200 SMART
758 System Manual, V2.3, 07/2017, A5E03822230-AF
A.5.2
RTD expansion modules (EMs)
EM RTD specifications
Table A- 124 General specifications
Technical data
EM RTD 2 x 16 bit (EM AR02)
EM RTD 4 x 16 bit (EM AR04)
Article number
6ES7288-3AR02-0AA0
6ES7288-3AR04-0AA0
Dimensions W x H x D (mm) 45 x 100 x 81 45 x 100 x 81
Weight
148.7 grams
150 grams
Power dissipation 1.5 W 1.5 W
Current consumption (SM Bus)
80 mA
80 mA
Current consumption (24 V DC)
1
40 mA
40 mA
Table A- 125 Analog inputs
Technical data
EM RTD 2 x 16 bit (EM AR02)
EM RTD 4 x 16 bit (EM AR04)
Number of inputs
2
4
Type
Module referenced RTD and Ω
Module referenced RTD and Ω
Range
Nominal range (data word)
Overshoot/undershoot range
(data word)
Overflow/underflow (data word)
See RTD Sensor selection table See RTD Sensor selection table
Resolution
Temperature
0.1 °C / 0.1 °F
0.1 °C / 0.1 °F
Resistance
15 bits + sign bit
15 bits + sign bit
Maximum withstand voltage
±35 V
±35 V
Noise rejection
85 dB at 10 Hz / 50 Hz /60 Hz / 400 Hz
85 dB at 10 Hz / 50 Hz /60 Hz / 400 Hz
Common mode rejection
>120 dB
>120 dB
Impedance
≥10 M Ω
≥10 M Ω
Isolation Field side to
logic
500 V AC 500 V AC
Field to 24 V DC 500 V AC 500 V AC
24 V DC to logic
500 V AC
500 V AC
Channel to channel isolation
0
0
Accuracy
See RTD Sensor selection table
See RTD Sensor selection table
Repeatability
±0.05% FS
±0.05% FS
Maximum sensor dissipation
0.5 m W
0.5 m W
Measuring principle Sigma-delta Sigma-delta
Module update time
See Noise reduction selection table
See Noise reduction selection table