West Control Solutions KS98-1 - Manual (Page 26)

I-6.6 Analog inputs
Thermocouples
see general connecting diagram on page 25. No lead resistance adjustment.
Internal temperature compensation:
compensating lead up to the instrument terminals.
With AINP1, STK = int.CJC must be configured.
External temperature compensation:
Use separate cold junction reference with fixed reference temperature.
Compensating lead is used up to the cold junction reference. Copper lead between reference and instrument. With AINP1,
STK = ext.CJC and TKref = reference temperature must be configured.
Resistance thermometer
Pt 100 in 3-wire connection.
Lead resistance adjustment is not necessary, if RL1 is equal
RL2.
Resistance thermometer
Pt 100 in 2-wire connection. Lead resistance adjustment is
necessary: Ra must be equal to RL1 + RL2.
Two Resistance thermometer
Pt100 for difference. Lead resistance compensation: proceed
as described in chapter calibration page 27 - I-9.4.
Resistance transducer
Measurement calibration r proceed as described in chapter
calibration page 27 - I-9.4.
Standard current signals 0/4...20 mA
Input resistance: 50 [, configure scaling and digits behind the decimal point.
Standard voltage signals 0/2...10V
Input resistance: ? 100 k[
(Voltage input module U_INP: >1 G[),
configure scaling and digits behind the decimal point.
+ INP5 is a difference input, the reference potential of which is connected to terminal A9. With voltage input, A6 must
always be connected to A9.
a
The inputs INP1 / INP6 are interconnected (common reference potential). This must be taken into account if both
inputs must be used for standard current signal. If necessary, galvanic isolation should be applied.
Electrical connections - Safety hints 9499-040-82711
I-26 Analog inputs
RL2
14 16 15
RL1 = RL2
RL1
}
RL2
14 16 15
Ra = RL1+RL2
Ra
RL1
}
RL2
14 16 15
RL1
xeff = 1 - 2 } }
}1 }2