Analog Inputs - PMA KS 98-1 Mode D'emploi

9499-040-44318
7.7

Analog inputs

For thermocouples (a), see general connecting diagram on page 12
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 instru-
ment. With AINP1, STK = ext.CJC and TKref = reference temperature must be configured.
Resistance thermometerPt 100
in 3-wire connection (b)
16 15
RL1 = RL2
RL1
}
Leitungsabgleich ist nicht erforderlich,
sofern RL1 = RL2 ist.
Resistance transducer (e)
Measurement calibration: proceed as describedon page47 - 9.8..
Standard voltage signals 0/2...10V (g)
Input resistance: ? 100 k[, 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.
Standard current signals 0/4...20 mA (f)
Input resistance: 50 [, configre scaling and digits behind the decimal point.
a
The inputs INP1 / INP6 are interconnected (common reference potential). This must be taken into ac-
count if both inputs must be used for standard current signal. If necessary, galvanic isolation should
be used.
Resistance thermometer Pt 100
in 2-wire connection (c)
16
14
Ra = RL1+RL2
RL2
RL1
Lead resistance adjustment is necessary:
Ra must be equal to RL1 + RL2.
Two resistance thermometers
Pt100 for difference
15 14 16
Ra
RL2
}
Lead resistance compensation: proceed
as described in chapter calibration47 -
41
Electrical connections
15
xeff = 1 - 2
RL1
}1
INP5
4 4
5 5
+ mA
6 6
- mA
7 7
8 8
9 9
Analog inputs
14
} }
RL2
}2
INP5
+ Volt
- Volt