2-21
CHAPTER 2 Checks and Preparation
2.10 Connecting the Signal Input Cables
This section describes how to connect the signal input cables.
During wiring, confirm that the signal's supply source is turned OFF to prevent electrical shocks.
Also, position the GLT400 input cable away from any power lines and ground cables.
Terminal Arrangement and Signal Types
(Standard terminal: B-564, Withstand high-voltage high-precision terminal: B-565)
Terminal assignment of standard terminal and Withstand high-voltage high-precision terminal is common.
CH1
CH20
+
-
b
Connection diagram
(Standard terminal: B-564, Withstand high-voltage high-precision terminal: B-565)
+
-
A
B
b
+
-
b
+
-
+
-
DC voltage input
Thermocouple input
Resistance temperature detector input
DC current input
Voltage input
Compensationcopper wire
Lead wire resistance should be 10Ω or
less per wire, three wires need to be
same length.
Shunt resister
Ex: For 4 to 20mA current input, installing 250 ohms (0.1%)
resister for converting 1 to 5V.
* 250 ohms shunt register is the option B551.
+
.....................................High-voltage terminal (terminal for high-voltage input signals)
– .....................................Low-voltage terminal (terminal for low-voltage input signals)
b
.....................................Dedicated terminal when connecting resistance bulb
* Resistance bulb input terminals A (+) and B (–) are isolated within each channel. Terminal b is shorted
within all channels.