Samwon Tech SDR100E Series, Instruction Manual

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11
▶ Resistance Temperature
Detector(RTD) Input
▶ DC Voltage input ▶ DC Current input
(3) Electric power circuit
(4) Measurement (Sensor) input circuit
● Use the cable with equivalent or above the vinyl insulated cable (KSC3340) or
electric cable for electric power circuit.
● Make the circuit for ground with the electric cable over 2mm and above the
third class ground (Unver100Ω of ground resistance)
● Make 1 point ground from the ground terminal and the wiring cross the ground
terminal shall not be made.
● Switch off the electric power to SDR100E main body and external power supply when the measurement (Sensor) input circuit
is made because of the electric shock risk.
● Use the cable with shield for the input circuit. In addition, make 1 point ground for the shield.
● Make the circuit off from the electric power circuit or ground circuit for the signal line for measuring input.
● Use the electric cable with small cable resistance and no difference in resistance among 3 cables.
'(
_7"$
The 3rd
class ground
SHIELD
RTD
R
+
-
+
-
1
2
3
A
b+
B-
The 3rd
class ground
SHIELD
1
2
3
A
b+
B-
V
The 3rd
class ground
SHIELD
1
2
3
A
b+
B-
mA
01. Cautions (Instructions) for safety