IB IL TEMP 4/8 RTD-EF-XC-PAC
8466_en_01 PHOENIX CONTACT 27
19 Configuration and analog values
The terminal only needs to be configured if the channels are
not to be operated with the default values (see “Parameters
for configuration” on page 17).
You can either configure the terminal via process data or
via PCP and transmit analog values accordingly.
If you have configured the terminal via PCP, the configura-
tion can no longer be modified via the process data.
Examples for terminal configuration via process data
20 Temperature and resistance mea-
suring ranges
20.1 Measuring ranges depending on the resolution
(IB IL format)
Where:
21 Measuring errors due to connec-
tion cables
21.1 4-wire technology
The terminal provides 4-wire technology for all eight chan-
nels and supports the maximum connection length of
250 meters for each sensor. Additional measuring toler-
ances caused by the cable length do not occur.
21.2 Systematic errors during temperature mea-
surement using 2-wire technology
Figure 10 Systematic temperature measuring error ΔT
depending on the cable length l
Curves depending on cable cross section A
(Measuring error valid for: copper cable χ = 57 m/Ωmm
2
,
T
A=
25°C and Pt 100 sensor)
Figure 11 Systematic temperature measuring error ΔT
depending on the cable cross section A
(Measuring error valid for: copper cable χ = 57 m/Ωmm
2
,
T
A
=
25°C, l = 5 m, and Pt100 sensor)
For easy terminal configuration a function block
can be downloaded at
www.phoenixcontact.net/catalog
.
Resolution Temperature sensors
00 -273°C to +3276.8°C;
Resolution: 0.1°C
01 -273°C to +327.68°C;
Resolution: 0.01°C
10 -459°F to +3276.8°F
Resolution: 0.1°F
11 -459°F to +327.68°F
Resolution: 0.01°F
Temperature values can be converted from °C to
°F with this formula:
T [°F] Temperature in °F
T [°C] Temperature in °C
T [ ° F ] = T [ ° C ] x + 3 2
9
5
(1) Temperature measuring error for A = 0.14 mm
2
(2) Temperature measuring error for A = 0.25 mm
2
(3) Temperature measuring error for A = 0.50 mm
2
0.0
3.0
6.0
9.0
12.0
15.0
0.0 2.5 5.0 7.5
10.0 12.5 15.0 17.5 20.0
K
l
m
57551014
(1)
(2)
(3)
D
T
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0
0.1
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
K
A
mm²
7567A012
D
T
