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When a field input to plc is coming from 400 to 600 meters
and the input is in 24 V DC? So signal cable of which cross
section i should select for proper signal to plc?
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you can use 0.5 Sq mm shieled for analog .....Upto 600 m no
problem ....but generally as per standerds above 500m you
will have to go with Fibre optic cable
| Is This Answer Correct ? | 9 Yes | 6 No |
Answer / laxit
For this type of circuit, use Relay output instead of
direct driving through the PLC output. As these SOV's are
not the low power wattage, Prefer to use 2.5 Sq.mm as a
general for such digital output.Relay contact shall be
selected accordingly.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / jayeshpateler
as per the 1cm3 core wire will be find also check the
current require then as per the current if it is higher
than you can carry but if current is low then you need to
use the repeater for that.
| Is This Answer Correct ? | 4 Yes | 5 No |
Answer / mwah
yes gaurav kale is right about 0.5 sq.mm twisted pair
shielded cable but u have to install repeater to make sure
theres no degrading of the signal at the end.
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / janes
It is all depends on the Load of the Field Instrument.
After Getting the load apply the Voltahe Drop Formula.
Also the input is 24VDC but define the Amp. is it 20A/ 10A.
that is 24Vdc 10A.
For 24VDC 10A Power supply and the Field Instrument is SOV
with 18 Watts, and the Distance is 600 meter then use the 2
Core 2.5 Sqmm Cable as per below Formula.
% Voltage Drop = Length X Current X R Cos0 + X sign0 /
Number of run X Voltage X 10.
| Is This Answer Correct ? | 2 Yes | 5 No |
Why 4-20mA SIGNAL IS PREFERRED OVEA A 0-10v signal?
Why we. Don't measure current in parallel? Why we measure current in series and why we measure voltage in parallel only?
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