7
GasLab Q2 displays and operating the device
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G a s Q u a l i t y A n a l y z e r
GasLab Q2
Correct the interference at point 6 (communication error)
The following measures can be taken if an error occurs in data communications.
If there are several devices on the bus, focus on the slowest participant
when selecting the operating mode! If the bus communication is not
working, it might be so that the device is set at wrong operating mode.
Steps to check the communication
1..
If changes have been made to the parameter settings, you must undo them
see chapter 8.3.5
2.
Check the communication cables for damage present.
Check each wire for the connection of "terminal to terminal"
3.
Test the function of the digital outputs in the disconnected device. Check with a measuring
device whether there is a connection between the switching signal line and the return line. There
must be no connections. Exception: Output DO_1, the opener.
4.
Navigate to display
I/O Overview
. Select "
On
" for the test mode of the corresponding hyperlink
(in the example Q2Base). Activate the hyperlink to switch to display
I/O Board details
.
(Prerequisites: I/O parameterization is available, device is ready for use)
Figure 7.61: Display I/O Overview and Board details
5.
Check the function of the digital outputs during operation.
Select the output to be checked under "
Channel
" in display
I/O Board details
. The display shows
the target state of the output next to the
Message (result)
. In the example, "
ON
". Now check with
a meter the displayed result. Repeat the procedure with "Message (result)" "
Off
" If the measured
results like the displayed results there is no error.
Behind "
Test output
" you can change the states of the output independently of the real conditions.
Measure each parameterized output in both states (On / Off) to get a complete overview of the
fault situation.
Do not forget to switch off the test mode!
Correct the interference at point 7 (sensor error)
Steps to check sensors
1.
If there entries in red in display "
Sensor values
", the sensor detected this value is outside the
valid range. This is a defect you
can’t resolve by yourself. Please inform Elster GmbH
If you have none success with the above methods, please contact Elster GmbH.
The contact details are on page 3 of this operating instructions
