Chapter 4 - Parameters and Menu Structure
Parameters (M3)
84 | 180
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Building Technologies
2016-06-07
Timers
Timers can be used to set a time channel as active during a certain time by commanding from a digital input (or a
time channel). For example, the settings below will set the timer as active when Digital Input 1 on slotA is closed
and kept active for 30 seconds after it opened.
Duration: 30s
Timer: DigIN SlotA.1
Timer 1 (M3.11.6)
Table 52: Timer 1.
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.11.6.1
Duration
s
0
72000
0
1489
Defines the amount of time to added to
AssignToChannel (P3.11.6.2)
P3.11.6.2
AssignToChannel
Not Used
Time Channel 3 Not Used
1490
Defines the affected time channel (1-3)
for the timer.
0 = Not used
1 = Time Channel 1
2 = Time Channel 2
3 = Time Channel 3
Timer 2 (M3.11.7)
Table 53: Timer 2.
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.11.7.1
Duration
s
0
72000
0
1491
See description for P3.11.6.1
P3.11.7.2
AssignToChannel
Not Used
Time Channel 3
Not Used
1492
See description for P3.11.6.2
Timer 3 (M3.11.8)
Table 54: Timer 3.
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.11.8.1
Duration
s
0
72000
0
1491
See description for P3.11.6.1
P3.11.8.2
AssignToChannel
Not Used
Time Channel 3
Not Used
1494
See description for P3.11.6.2
Example
Problem:
We have a variable frequency drive for air conditioning in a warehouse. It needs to run between 7:00 A.M. until
5:00 P.M. on weekdays, and 9:00 A.M. until 1:00 P.M. on weekends. Additionally, the drive must be manually
forced to run outside working hours if there are people in the building, and must continue to run for 30 minutes
afterwards.
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