FX2N-8AD Analog input block
Wiring 6
6-3
*1 Use a two-core, twisted, shielded cable for the analog input line, and separate it from
other power lines or a lines easily induced.
*2 If there is voltage ripple in the input or there is noise in the external wiring, connect a
capacitor of approximately 0.1 to 0.47
µ
F, 25 V.
*3 For the current input, make sure to short-circuit the “VO+” terminal and the “IO+” terminal
(O: input channel No.).
*4 Make sure to connect the
terminal to the
terminal of the PLC main unit to
which Class D grounding (100
Ω
or less) is performed.
*5 The 24 V DC service power supply of the PLC is also available.
*6 Use an isolated type thermocouple.
-
When using the thermocouple input, use compensating conductors suitable to the
thermocouple.
-
Never perform wiring to
terminals.
-
For the terminal arrangement, refer to Section 3.
*Compensating Lead Wire
To a wire resistance 10(
Ω
), Compensating Lead Wire gives approx. 0.12C
°
higher than
the actual temperature.
For accurate measuring, minus this temperature difference off from the measured value.
Check the wire resistance of Compensating Lead Wire before use.
A long Compensating Lead Wire is highly susceptible to Noise. Check that the Compen-
sating Lead Wire is shorter than 100m.
•
Содержание FX2N-8AD
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