SAMWONTECH
4th Edition of TEMI880 IM : Jan. 29. 2007 Page 12 / 119
1.4.2.4 Grounding and Power Wiring
▶ Use a cable 2 ㎟ or more thick for grounding with class 3 grounding(grounding resistance a 100Ω or
less) or higher. Do not extend the grounding cable over 20m.
▶ Ground from the ground terminal with a one-point contact. Do not wire between ground terminals.
▶ Use appropriate cables equivalent to vinyl insulation cable(KSC 3304) or more.
1.4.2.5 Analog Input
▶ Before starting analog input wiring, be sure to turn off the system or else you will get an
electrical shock.
▶ When connection, do not mix up the input polarity. Connecting with the wrong polarity can
cause the unit to malfunction.
▶ For input wiring, use a shielded cable. Ground the shield at one point and grounding circuits
as possible.
Resistance Temperature Detector(RTD) Input
DC Voltage Input DC Current Input
Ground FRAME GROUND(FG) Exactly.
CAUTION
100~240V AC
50/60Hz
Class 3 Ground
L
N
FG
Class 3 Ground
TEMI880
INPUT
SHIELD
RTD
A
b+
B-
Temp.: -1~2V
Humi.: 1~5V
Humi.
R = 250Ω: 1~5V
+
-
V
mA
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