GRAPHTEC GL980 - Connection Diagram; DC Voltage Input; Thermocouple Input; Current Input

2-10
CHAPTER 2 Checks and Preparation
Connection diagram
Ex: The current is converted to the voltage using
the shunt register.
For 4 to 20mA current input, install 250 ohms
(0.1%) resister for converting 1 to 5V.
+ −
+ −
+ −
DC voltage input Thermocouple input Current input
DC voltage
Compensating lead wire
DC current
Please wire so that the main unit is not tugged by the signal input cable.
If the main unit is pulled, there is a danger where the device will tip over.
+ .....................................High potential terminal (The high potential side of the input signal is input.)
- ......................................Low potential terminal (The low potential side of the input signal is input.)
Item Description
Input conguration Isolated input
Measurement range 20, 50, 100, 200, 500 mV/F.S.; 1, 2, 5, 10, 20, 50, 100, 200, 500V/F.S.
1-5V/F.S
Thermocouples K, J, E, T, R, S, B, N, W (WRe 5-26)
A/D resolution 16-bit (Effective resolution: Approx. 1/40,000 of ± range)
Filter Off, Line, 5, 50, 500, 5k, 50 kHz
Input cable
This device conforms to the EMC directive when the core is attached to the input cable.
Please attach the supplied core to the input cable as shown in the gure below.
* Even without a core, measurement accuracy is not affected.
In case of thermocoupleWhen installing to 1 or 2When installing more than one (3 to 4 pcs.) at
the same time
Screw terminal
Recommended tightening torque of screw terminal is max. 6kgf/cm.
If the thermocouple tends to come off due to the use of a thin-type thermocouple, replace it with the supplied
M3.5 at screw.