MSA SUPREMATouch MCP 20, Operating Manual, Page: 84 / 241

84
Service
GB
SUPREMATouch
6.6 Digital Message Priority
The highest priority messages [with “1” being of highest priority] are displayed first. Messages with
a lower priority are displayed in addition if these use other indicating ranges for message display.
6.7 LED and Sounder Test
An LED and sounder test is provided for the MDO which enables a visual functional test of the
front panel LEDs and an acoustical test of the sounder. This test can be carried out independently
from the active operating state of the SUPREMATouch and does not affect the mode of operation
of the SUPREMATouch. To carry out this test, press the button shown in the illustration. The front
panel LEDs should now be illuminated (System–power, fail, inhibit and Signal–1st to 4th alarm,
fail). If there is an LED that is not illuminated when the switch is pressed, it is possible that the
MDO module needs to be replaced.
Fig. 53 MDO Module, Switch for LED Test
Message Priority Display [List] LEDs/Relays
Alarm 1 9 Measuring points status 1st Alarm Signal AL 1 on
Alarm 2 8 Measuring points status 2nd Alarm Signal AL 2 on
Alarm 3 7 Measuring points status 3rd Alarm Signal AL 3 on
Alarm 4 6 Measuring points status 4th Alarm Signal AL 4 on
System error 1 System Fail on
Signal error 3 Meas. point status Signal fail Signal Fail on
Module error 1 Module fail on
CAN bus failure 1
Free 1 Measuring point status free
Measuring 10 Measuring point status measuring
Inhibit 2 Measuring point status inhibited Inhibit on
DO [Disable Output] 2 Measuring point status Inhibit flashing
Calibration 6 Measuring point status calibration Inhibit on
Sensor warm-up 4 Measuring point status suppressed Inhibit on
Measuring range overflow 5 Measuring point status overflow Signal Fail on
New value 1 Signal flashing
LED and sounder test