52
Connecting the Cables
Connecting voltage cables and thermocouples
Connecting wires to a screw-type terminal block
WARNING
For screw-type terminal blocks, use specially designed screws to
secure connections.
Use of other screws could result in electric shock or equipment damage.
Applicable modules: U8550, U8553, LR8530, LR8533
You will need: a Phillip’s head screwdriver (No. 2) and an input cable or thermocouple
Recommended wire diameter
Single-wire Diameter of 0.2 mm to 1.29 mm (AWG 32 to 16)
Stranded wire 0.03 mm
2
to 1.38 mm
2
(AWG 32 to 16)
Standard stripping length 10 mm
1
Open the terminal block cover.
2
Loosen the terminal block screw. Insert the tip of the cable as shown in the gure and
tighten the screw.
Tighten the terminal block screws to 0.4 N·m (recommended; 0.8 N·m at a maximum).
Cable insulation colors vary by country and manufacturer. Check before connecting.
3
Connect the cable to the measurement target.
4
Close the terminal block cover.
When measuring an instrumentation device (inputting a 4-20 mA current), connect a 250
Ω
shunt
resistor as shown in the gure. For more information about measuring instrumentation devices, see
“Measuring voltage” in the Instruction Manual.
Shunt resistor
250
Ω
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