Rtd/Ma Input Connection - ABB RELION Series Technical Manual

1MRS758755 A
3.12.2.10
REC615 and RER615
Technical Manual
Temp Platinum TCR 0.00385
°C
Pt 100
80 130.89
90 134.7
100 138.5
120 146.06
140 153.58
150 -
160 161.04
180 168.46
200 175.84

RTD/mA input connection

RTD inputs can be used with a 2-wire or 3-wire connection with common ground.
When using the 3-wire connection, it is important that all three wires connecting the
sensor are symmetrical, that is, the wires are of the same type and length. Thus the wire
resistance is automatically compensated.
GUID-BC4182F7-F701-4E09-AB3D-EFB48280F097 V1 EN
Figure 36: Three RTD/resistance sensors connected according to the 3-wire
connection
Nickel TCR 0.00618
Pt 250 Ni 100
327.225 148.3
336.75 154.9
346.25 161.8
365.15 176
383.95 190.9
- 198.6
402.6 206.6
421.15 223.2
439.6 240.7
Section 3
Basic functions
Ni 120 Ni 250
177.96 370.75
185.88 387.25
194.16 404.5
211.2 440
229.08 477.25
238.32 496.5
247.92 516.5
267.84 558
288.84 601.75
Copper TCR
0.00427
Cu 10
12.124
-
12.897
13.669
14.442
-
15.217
-
-
93