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27
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The above figure shows how to make a four-wire current measurement.
Connect two-wire sensor to ELC-E-AI(I).
Two-wire sensor wiring is as follows:
1. Connect the output of the sensor to the “I” terminal (0…20mA current measurement) of ELC-E-AI(I)
module.
2. Connect the attached connector of the sensor to the +24V(L+) of power supply.
3. Connect the current output terminal M to the corresponding M terminals(M1,M2,M3) of ELC-E-AI(I).
ELC-E-PT100
ELC-E-PT100
ELC-E-PT100
ELC-E-PT100
It can be connected with one two-wire or three-wire resistance-type thermocouple.
When two-wire technology applied, the terminals “M1+ and IC1” (this rule also shall be applied to” M2+ and
IC2”, “M3+ and IC3” ) would be short connected . Such connection can not compensate error/tolerance
caused by the resistance in measurement loop. The measurement error of 1 Ω impedance of power cord is
proportional to +2.5 °C
The three-wire technology can inhibit the influence of measurement results caused by cable
length (ohmic resistance).
Summary of Contents for xLogic
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Page 102: ...100 100 100 100 B B B B Blocks Blocks Blocks Blocks...
Page 105: ...103 103 103 103 G G G G M M M M status status status status...
Page 106: ...104 104 104 104 H H H H AM AM AM AM value value value value...
Page 164: ...162 162 162 162 If the Memory Read block had been triggered the Q1 of ELC 12 CPU will be set 1...
Page 204: ...202 202 202 202 Step Step Step Step 6 6 6 6 Moving Moving Moving Moving...
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