Fan Control Application Manual
23
AC30V series Variable Speed Drive
PNO
Parameter Descriptions
1 MONDAY
2 TUESDAY
3 WEDNESDAY
4 THURSDAY
5 FRIDAY
6 SATURDAY
2037
Active Event*
This diagnostic indicates which of the speed change events last occurred (and is still active). If there are no programmed events this
will be set to 0.
Functional Description
A maximum of 6 events may be programmed. Each event is for a time of day on one or more days of the week. A value to be selected is then
chosen to be output when the time of day is reached on one of the days that have been specified.
So, each event is programmed with 3 parameters. These are
Event Days
,
Event Time Of Day
and Event Select
. Unused events must have
their
Event Days
set to 0 (default). Events do not need to be declared in chronological order and unused events do no need to be last (i.e. gaps
are allowed).
Example Program:
n
Event Days
n
Event Time Of Day
n
Event Select
n
1
3E (Mon, Tues, Wed, Thurs, Fri)
7:00
1
2
40 (Sat)
8:30
1
3
7F (Sun, Mon, Tues, Wed, Thurs, Fri, Sat)
11:00
2
4
7E (Mon, Tues, Wed, Thurs, Fri, Sat)
14:00
3
5
01 (Sun)
14:00
0
6
7E (Mon, Tues, Wed, Thurs, Fri, Sat)
18:00
0
This then has the following behavior:
-
Monday to Friday the Preset Speed 1 is selected at 7:00. This remains selected until 11:00 when the Preset Speed 2 is selected. At
14:00 it is changed to Preset Speed 3. Finally, at 18:00 Preset Speed 0 is selected.
-
Saturday is the same as Monday to Friday except that the selecting of Preset Speed 1 occurs later at 8:30.
-
On Sunday the program just selects Preset Speed 2 at 11:00 and then Preset Speed 0 at 14:00
At power-up, the Time Of Day Timer searches backwards in time (and day) to find the Event that would be active if the power had been on
continuously. It then makes this Event active. In the example above, if power-up was 10:00 on SATURDAY then Event 2 would be active, but if at
10:00 on a SUNDAY then Event 6 would be active.
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