B&C Technologies DI-325 Industrial - Manual (Page 47)

OPERATING AND PROGRAMMING INSTRUCTIONS
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4.1.3 Status line with humidity sensor
If a humidity sensor is present (and set in the machine configuration), the humidity sensor is
placed in the exhaust pipe. It can then measure the humidity of the outlet air to detect if the batch is
dry. Program parameter 10 is used to determine if the batch is dry. If a humidity sensor is present,
the 2
nd
line may look like:
24 / 75 °C 23 %
The value on the right is the current measured air humidity by the humidity sensor. If the
value is measured below the adjusted value for long enough, the batch is considered to be dried.
4.2 Status line with times
As explained, the status line with times may look like this:
30m + 40m
The symbol indicates that the drying step is active. The estimated remaining time for
drying is 30 minutes. If the cool-down step is active, the symbol will be replaced by the
symbol. The + symbol is a symbol for the total time remaining. The total time remaining is
the estimated remaining drying time plus the estimated remaining cool-down time. In this example,
the total estimated time left is 40 minutes. From this we can also derive that the estimated remaining
cool-down time is 10 minutes. Because the estimated remaining drying time is 30 minutes and the
estimated remaining total time is 40 minutes, the estimated remaining cool-down time is 40 – 30 =
10 minutes.
4.3 Numeric display
Just above the graphical display, there are three ‘7-segment’ displays are placed. These ‘7-
segment’ displays can only be used to display numbers and some simplified symbols. The ‘7-
segment’ displays will be referred to as the numeric display.
The numeric display is larger than the graphical display, which means that it can be read
from further away. It is used to indicate the current alarm number, the estimated total cycle time left
and to notify the user that a program is finished and that the batch is ready to be taken out.
If an alarm is active, the numeric display will toggle between ‘- - -‘and the current alarm
number. In this case the lower line of the graphical display will show the alarm text corresponding
with the alarm number. For a full explanation of all available alarms, see chapter ‘Alarm and status
messages’.
If a drying or cool-down cycle is running, the numeric display will show the estimated time
left for the cycle in minutes.
If the program has finished the numeric display will toggle between ‘- - -‘and empty. This
indicates that the drying and cool-down has been done and that the batch is ready to be taken out of
the dryer.
When the machine is not drying or has finished a program, and no alarms are active, the
numeric display will only show ‘- - -‘.
4.4 LED functions
The controller has 3 LED’s in total, a yellow one next to the numeric display, a red one in
the stop button and a green one in the start button.