B&C Technologies M720 Dryer Control (DE, DP, DI Series) - Manual (Page 38)

4.8 Alarm History
The alarm history list can be viewed by selecting Alarm history in the main menu. The alarm
history is a list with the last 50 alarms, warnings and messages which have occurred. The alarm
history is stored in the battery backed-up memory.
In the alarm history screen the upper line displays which record number is currently displayed.
Scrolling through the list of records is done with the A
RROW U P and A RROW D OWN keys. The
maximum number of items saved is 50.
The time the alarm started is shown on the right side of the upper line. The lower line shows the
alarm number and alarm text (see Chapter 5 on page 39 for a complete list of all available alarms,
warnings and other messages). The number of minutes the alarm has been active is displayed on
the right side of the lower line. The maximum value is 240. When an alarm is active for longer that
240 minutes (or 4 hours) the controller will stop counting. The minimum time is 1 minute. If an
alarm is active for less than 1 minute the number of minutes will be set to 1 anyway. If the alarm
is still active, a ? will be shown instead of a value. If an alarm was active when the controller was
switched off, the active time will also show a ?.
In order for the alarm history list to work properly it is important that the controller date and time
are set to the correct values. Section 4.7.1 on page 33 describes how to set the correct date and
time.
4.9 Edit Machine Configuration
The machine configuration is a list of parameters which can be programmed to set-up the avail-
able options of the machine. Because these parameters influence the way the machine works and
because setting the wrong values can cause a complete machine stop, these parameters are only
accessible with the highest password level. Usually, these parameters are programmed once after
installing the machine. If the configuration has been set-up properly during installation, there is
no need to change the values unless there are changes to the physical installation.
In the edit machine configuration screen, a parameter can be selected with the A RROW U P and
A RROW D OWN keys. A value can be changed with the P LUS and M INUS keys, or with the numeric
keys. Changing the value must be confirmed with the E NTER key. The upper line will show the
number and name of the parameter, followed by the value. On the lower line, the maximum and
minimum limit will be displayed. With the
icon is indicated if it is possible to still move up or
down in the list, with the icon is indicated if it is possible to increase or decrease the value.
If the S HIFT key is used in combination with the arrow keys, the controller will move to the first
or last item in the list. If the S HIFT key is used in combination with the plus and minus keys, the
value will be increased and decreased in larger steps.
Note: After changing the value of a machine configuration parameter, press the E NTER key to
confirm. After all changes are made, you must press the H OME key to confirm all changes.
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