Siemens ET 200S - Page 458

Analog Electronic Modules
12-102
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
12.13 2AI RTD Standard Analog Electronic Module
(6ES7 134-4JB50-0AB0)
Order Number
6ES7 134-4JB50-0AB0
Features
 2 inputs for resistance thermometers or resistance measurement
 Input ranges:
– Resistance thermometers: Pt100, Ni100; resolution 15 bits + sign
– Resistance measurement: 150 , 300 , 600 ; resolution max. 15 bits +
sign
 Isolated from the load voltage L+
 Linearization of the sensor characteristic curves
Terminal Assignment
The resistance thermometers/resistors are measured in a four-conductor
connection. Constant current is fed to the resistance thermometers/resistors by
means of connections I
C
+ and I
C
–. The voltage generated at the resistance
thermometer/resistor is measured by means of the connections M + and M –. This
ensures highly accurate measurement results with the four-conductor connection.
With the two/three-conductor connection, you must apply corresponding jumpers to
the module between M+ and I
c
+ or M
–
and I
c
–. However, you have to expect a loss
of accuracy in the measurement results.