SAMWONTECH
2nd Edition of TEMP2000_Series IM : July. 16. 2010 Page 17 / 87
③ CONTROL UNIT Power Wiring
1.3.3.1 ANALOG INPUT Wiring
▶ Be careful of the polarity of the signal. The wrong connection may cause a trouble.
▶ Use a shielded wire for analog input and the shield should be 1-point grounded.
▶ The wires of input signal should be apart from power line and grounding line.
▶ Use a wire of low resistance. The resistance difference between the wires is unfavorable especially for a
resistive sensor.
(A) RTD INPUT
(B) DC VOLTAGE INPUT (C) DC CURRENT INPUT
DC24V
R
-
+
3 Class Ground
SHIELD
DCmA
3 Class Ground
SHIELD
RTD
3 Class Ground
SHIELD
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