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
V
