4.CONNECTIONS
4.4 Measuring Input Terminals 
1Measuring input terminals
Make sure to turn off the power supply to prevent an electric shock.
(1)Measuring input terminals are located on the down left of the terminal board.
(2)For the connections to the input terminals, use cables terminated by crimp style terminals with insulation sleeves.
Caution Allowable input voltage
Input type | Allowable input voltage | |
Voltage, | ±10 VDC(range: ±2V or less) | |
Thermocouple input | ± | |
| ±60 VDC (range: 5V or more) | |
Resistance | ±6 VDC | |
thermometer input | ||
|
2Connections of DC voltage (current) input
Use twisted cables for instrumentation as the input cables for the purpose of suppressing noise. For current inputs, mount shunt resistors (Section 16.2) to the channels to be measured before connections.
1 2 3 4
(+)
Twisted cable for instrumentation
DC voltage input
3Connections of thermocouple inputs
Make sure to use thermocouple wires (or extension wires) to the input terminals of your recorder. If a copper wire is used halfway, a noticeable measuring error occurs. Don’t use a pair of thermocouple wires in parallel with other instruments (controller, etc.), otherwise a malfunction may occur.
1 2 3 4
Red (+)
White
Extension wire
Thermocouple
4Connectionsofresistancethermometerinputs
Use a
1 | 2 3 | 4 | ||
(Same | diameter, | A |
|
|
same | length) | B |
|
|
|
|
|
| |
B
Note: Use a
Terminal cover
Resistance thermometer
Warning 
mark of measuring input terminals
A high voltage may be applied to the measuring input terminals due to common mode noise. The allowable noise value is 30 VAC or less, or 60 VDC or less. Make sure that the noise is lower than the allowable value. Mount the terminal cover after connections for the purpose of preventing an electric shock and to protect the input wires. In the case of thermocouple input, the mounting of the terminal cover can reduce the reference junction compensation error.
－１６－
