Events Mask; Deleting The Events Log; Black Box For Parameters; Maintenance Signals - Mitsubishi Electric s-MEXT-G00 006 Technical Manual

TM_s-MEXT_ME28relC_00_12_19_EN
A screenshot of the filter-setting mask for the Service level is shown below:
Once the filter to be applied has been selected, press the [ENTER] key to access the event mask.
15.6.4

Events mask

Once the filter has been selected, as explained in the previous chapters, the operator may access the event history mask.
The layout contains the following information:
•
Event date and time.
•
Local network (LAN) address (if configured).
•
Event number.
•
Event status (Set / Reset).
•
Event code and type (Signal / Alarm / Warning).
•
Type of event reset (Auto / Man).
•
Text describing the event.
•
Location where the problem is found (COMPR, CIRC, UNIT, PLANT).
•
Alarm block action, that is, what the event has caused to block (COMPR, CIRC, UNIT, PLANT, CW, HU, EH, FN).
15.6.5

Deleting the events log

To delete the events log on the display, access the relative mask in the "Default" menu, which can be accessed by entering the "Factory" password.
15.7

BLACK BOX FOR PARAMETERS

The application software logs all changes made to the unit parameters, recording the date and time of the change and indicating the old value and the new one after the
change. It also keeps a record of all the unit parameters, to offer an overview of its status.
The file generated by the Parameters black box is encrypted and only readable using the Service software.
15.8

MAINTENANCE SIGNALS

The software displays, in the same form as an Alarm / Signal event, the need to perform maintenance on the devices inside the unit, i.e.:
•
Fan
•
Compressors
•
Electric heaters
•
Humidifier
The signal is displayed when the set number of operating hours is exceeded. If the number of hours is equal to 0 (default value) the maintenance signal for that device is
disabled and therefore never appears.
The unit devices that certainly require periodic maintenance are the air filters and the humidifier. As regards the air filters, the maintenance signal coincides with the
ventilation signal, as the filter operating hours are the same as the fan operating hours.
After the signal is acknowledged, the counter can be reset and the hours start from zero.
Both the setting of the operating hour thresholds and the reset procedure are performed on the "Settings" menu, accessible through the "Service" password.
Technical manual
Filter
for alarm event
Type: Alarm
Location: Plant
15:32:28 11/05/12
LAN Address: 01
Event n° 004
SET A002 Type:AUTO
Wrong Power Phases
Sequence
Location :PLANT
Action :UNIT
100
TRANSLATION OF THE ORIGINAL INSTRUCTIONS