Küppersbusch EDG 6600.0, Руководство по обслуживанию

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H3-72-01 87
For internal use only
10.1 Food temperature sensor
Fault mechanisms
As soon as the output voltage of the temperature sensor wiring is below approx. 0.07 V (binary data
≤
4
“means a sensor short circuit”), or as soon as the voltage exceeds approx. 4.9 V (binary data
≥
252
means a “sensor interruption”), the display will show the fault indication F1. The mean value of the binary
data checked is taken in the appliance software over 16 readings.
In the event of a fault, the appliance control system switches off all of the actuators and switches over to
fault mode. It is not possible to start a procedure with a food sensor inserted until the fault has been
rectified or the food sensor has been removed.
Please note! The stability of the temperature sensor characteristic is guaranteed by the
manufacturer within the tolerance levels and is not monitored by the software. .
Possible causes of faults
• NTC temperature sensor defect (short circuit, discontinuity, etc.)
• Wiring defect (plug connections, cable discontinuity, cable short circuit)
• Plug-in mechanism defect
Technical data
Sensor element resistance NTC
Resistance at + 25°C 50k
Ω
Temperature gauging range +40°C... + 100°C
Accuracy of measurement see table
Temperature stability -10°C... +250°C for the sensor element
(up to +260°C short-term)
-10°C... +270°C for cables and handles (distance to
the infrared heater
≥
100 mm)
Electric strength between casing electrically connected with
connections and casing
1)
connection 2
Thermal time control
2)
approx. 6 sec.
Cable and handle colour approx. RAL 8019 /grey-brown
RESISTANCE SEQUENCE
T
(°C) R
(k
Ω
)
R
TOL
(± %)
T
TOL
(± %)
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 50,0
40.3
32.7
26.6
21.9
18.0
14.9
12.4
10.4
8.76
7.40
6.28
5.35
4.58
3.93
3.39
6.1
5.9
5.7
3.7
3.6
3.5
3.4
3.3
3.2
2.2
4.6
4.5
4.4
1.5
1.0
1.5