MSA SUPREMATouch MCP 20, Operating Manual

Page: 15 / 241

15
System Concept
GB
SUPREMATouch
Fig. 3 Display with keys
2.4 Keys
WARNING!
All alarms, failures and overrange indications are reset with the keys (if the conditions no
longer apply).
It is possible to selectively reset alarms in two steps using the graphical user interface.
2.5 LED Indicators
The 8 LED indicators provide system and signal status information.
1 ACKNL (acknowledge) key 4 SYSTEM LEDs
2 RESET key
3 SIGNAL LEDs 6 Display
4
3
2
1
6
ACKNL key
To acknowledge all alarms, press the ACKNL key to make the LED change to
‘steady state’.
Pressing the ACKNL key silences the horn, regardless of whether or not the
alarm condition still exists.
RESET key
If a signal no longer exceeds the alarm threshold and the alarm has been
acknowledged, the LED is turned off by pressing the RESET key.
For non-latching alarms or if the signal still exceeds the alarm threshold, the
RESET key has no effect.
SYSTEM:
POWER (green) power supply on/off
FAIL (yellow) system specific error (e.g. defective CPU)
INHIBIT (yellow)
on: inputs are inhibited or a calibration is pending
flashing: outputs connected to one or more inputs are locked