2-9
Checks and Preparation
2.6 Connecting the Signal Input Cables
This section describes how to connect the signal input cables.
WARNING
Make sure the power is OFF while connecting the wires to avoid electric shock.
CAUTION
• Fix the signal wires to the back of the mounting panel. Pulling the input/output signal wires with
strong force may damage terminals and signal wires.
• Use wires that resist rated temperature 70°C or higher to avoid fire hazards.
• Do not apply voltage that exceeds the following to input terminals. Applying high voltage may
damage the device.
Maximum input voltage : ±60 VDC
Maximum common mode voltage : AC 33 Vrms or ±60 VDC
Caution on Connecting Cables
Follow the directions below when connecting the input signal cables.
• Use crimp terminals with insulating sleeves (for 4 mm screws) when connecting input signal wire to a terminal.
• Do not place the measurement circuit close to the power line (power circuit) and ground circuit.
• If the measured object is a noise source, refer to page 2-21 and perform the countermeasures.
• Connect the protective ground terminal. Resistance to ground must be 50Ω or less.
• Attach the terminal cover when conducting a temperature measurement using a thermocouple.
• Do not use wires with larger diameters, which have a high heat dissipation effect, when conducting a
temperature measurement using a thermocouple (0.65φ or smaller is recommended).
• Avoid environments with significant temperature changes. Turning a fan ON/OFF near the device, for
example, may cause a significant temperature change.
•
Parallel connection of input wires and other devices may cause measurement values on both devices to fluctuate.
• Do not power ON/OFF neither device during operation. This may cause some effect on the other device.
Connecting Cables
(1) Remove the terminal cover.
To remove the cover, pull the cover in direction B
while applying force in direction A.
(2) Connect the signal wire to the input terminal.
Recommended screw torque is 12 to 14 kgf/cm.
Refer to the following figure to connect wires to terminals.
A
B
To Next Page
Loading...