Parameters vacon • 96
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6
Timers
Timers can be used to set a Time Channel active during a certain time by a command from a
digital input (or a Time Channel).
Figure 23. Activation signal comes from a digital input or " a virtual digital input" such as a
Time channel. The Timer counts down from falling edge.
The below parameters will set the Timer active when Digital Input 1 on Slot A is closed and
keep it active for 30s after it is opened.
Duration: 30s
Timer: DigIn SlotA.1
Tip: A duration of 0 seconds can be used for simply overriding a Time channel activated from
a digital input without any off delay after the falling edge.
EXAMPLE
Problem:
We have an AC drive for air conditioning in a warehouse. It needs to run between 7am - 5pm
on weekdays and 9am - 1pm on weekends. Additionally, we need to be able to manually force
the drive to run outside working hours if there are people in the building and to leave it running
for 30 min afterwards.
Solution:
We need to set up two intervals, one for weekdays and one for weekends. A Timer is also need-
ed for activation outside the office hours. An example of configuration below.
Interval 1:
P3.12.1.1:
ON Time: 07:00:00
P3.12.1.2:
OFF Time: 17:00:00
P3.12.1.3:
Days: Monday, Tuesday, Wednesday, Thursday, Friday
P3.12.1.4:
Assign to channel: Time channel 1
Duration
Remaining
time
Activation
Time
OUT
9137.emf
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