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Unidrive M Regen Design Guide 209
Issue Number: 4
9.9.4 Timers
If the enable input to a timer is active and the repeat function is set to a non-zero value then the timer is active even if the destination is not routed to
valid a parameter. The timers are updated in the background task and have a resolution of 1 s.
The following is a description of Timer 1, but Timer 2 behaves in the same way. If Timer 1 Invert (09.041) = 0 then Timer 1 Output (09.042) is inactive
before the Timer 1 Start Date (09.035) / Timer 1 Start Time (09.036), active between this date/time and Timer 1 Stop Date (09.037) / Timer 1 Stop
Time (09.038) and then inactive after the stop time/date within the timer 1 repeat period as shown in the diagram below.
Figure 9-14 Timer 1 and 2 output
Timer 1 Repeat Function (09.039) defines the length of the repeat period. For example, if Timer 1 Repeat Function (09.039) = 2 then the repeat
period is one day. The output is inactive until the time reaches the hour, minute and second defined in Timer 1 Start Time (09.036), and remains active
until the time reaches the hour, minute and second defined in Timer 1 Stop Time (09.038). Different repeat periods may be selected as given in the
table below. The table shows the constituent parts of the date and time that are used to determine the start and stop events. If the repeat period is set
to every week then Timer 1 Start Date (09.035) and Timer 1 Stop Date (09.037) define the day of the week and not the date (i.e. 00.00.00 = Sunday,
00.00.01 = Monday, etc.). If the stop time event is set to occur at or before the start time event or the Timer 1 Repeat Function (09.039) = 0 or Timer 1
Enable (09.040) = 0 the output remains inactive at all times (i.e. Timer 1 Output (09.042) = 0 if Timer 1 Invert (09.041) = 0)
As Timer 1 Invert (09.041) inverts the timer output it can be used to give an active state of 0 instead of 1. Alternatively it can be used to give an active
state of 1, but for a time period that spans the ends of the repeat period as shown in the example above. It should be noted that if this method is used
to allow the active period to span the ends of the repeat period then if the timer is disabled the output of the timer block before the invert becomes 0,
and so the final output of the timer after the invert is 1.
If Date/Time Selector (06.019) is changed and the drive is reset then the source for the timers will change, therefore Timer 1 Repeat Function
(09.039) and Timer 2 Repeat Function (09.049) are reset to 0 to disable the timers, and the date and time entries in the trip log are cleared.
Timer 1 Repeat Function (09.039)
Repeat
period
Second Minute Hour Day Month Year Day of week
0 None
1 Hour
••
2Day
•••
3 Week
••• •
4 Month
••••
5 Year
•••••
6 One off
••••••
7Minute
•
Active state of1 that
spans the end of the
repeat period
Timer 1 / 2 repeat period
Start Date
and Time
Stop Date
and Time
Timer 1 Invert
(09.041) = 1
Timer 2 Invert
(09.051) = 1
or
Timer 1 Invert
(09.041) = 0
Timer 2 Invert
(09.051) = 0
or
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