X20 system modules • Temperature modules • X20ATA492
X20 system User's Manual 3.10
2423
4.31.6.4 Status LEDs
Image
LED
Color
Status
Description
Off
Module supply not connected
Single flash
Reset mode
Blinking
PREOPERATIONAL mode
Green
On
RUN mode
Off
Module supply not connected or everything is OK
On
Error or reset state
Red
Single flash
A parameter or conversion error has occurred. This status is output in addition
to a single/double flash on the channel LED of the analog input where the error
occurs.
S
Steady red / single green flash Invalid firmware
Off
Input turned off or not supplied
Single flash
A parameter error has occurred. A single flash is output on the red "e" module
status LED.
Double flash
A conversion error has occurred. A single flash is output on the red "e" module
status LED.
Blinking
Overflow, underflow or wire break
1 - 2
Green
On
Analog/digital converter running, value OK
Table 842: X20ATA492 - Status LEDs
4.31.6.5 Pinout
TC+ 1
Sense+ 1
1
TC− 1
Sense− 1
Sensor− 1
TC+ 2
TC− 2
Sense+ 2
Sense− 2
2
Sensor− 2
1 2
X
20
A
T
A
49
2
S
4.31.6.6 Connection examples
Internal temperature compensation
The thermocouple terminal block X20TB1E with integrated PT1000 sensors is used for internal temperature com-
pensation.
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