I. INSTALLATION
IM TEMI 770E_C 2nd Edition: Sep. 1. 2003. 9/15
4-2-1. Grounding
■
Use a cable 2
㎟
or more thick for grounding with class 3 grounding(grounding
resistance a 100
Ω
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.
4-2-2. Analog input
CAUTION
Before starting analog input wiring, be sure to turn off the system or else you
will get an electrical shock.
IMPORTANT
■
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.
(1) Resistance Temperature Detector (RTD) INPUT
(2) DC VOLTAGE INPUT (3) DC CURRENT INPUT
B
b
A
SHIELD
RTD
INPUT 2
INPUT 1
RTD
B
SHIELD
A
b
SHIELD
DCV
_
+
mA
R
SHIELD
+
_
V : 1 ~ 5 V
R = 2 5 0
Ω
: 1 ~ 5 V
FG
100~240V AC
50/60 Hz
Ground FRAME GROUND (FG) EXACTLY.
Class 3 Ground
Class 3 Ground Class 3 Ground
100-240VAC
0.1A, 50/60Hz
Class 3 Ground Class 3 Ground
