Switching Thresholds For Multistage Operation - Siemens LMV37.4 Series Basic Documentation

Building Technologies

9.6.2 Switching thresholds for multistage operation

For multistage operation, a hysteresis band about the thresholds is introduced. This
hysteresis band replaces the minimum positioning step used in multistage operation.
The band width is approx. 1 mA.
2-stage operation
Actual value
Stage 1
Hysteresis band
Stage 2
3-stage operation
Actual value
Stage 1
Hysteresis band 1
Stage 2
Hysteresis band 2
Stage 3
Basic documentation LMV37.4...
9 Connection to load controllers
Current
5 mA (3...12 mA)
12...13 mA
15 mA (13...20 mA)
Current
5 mA (3...7 mA)
7...8 mA
10 mA (8...12 mA)
12...13 mA
15 mA (13...20 mA)
Display / output value
P1
---
P2
Display / output value
P1
---
P2
---
P3
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CC1P7546en
17.12.2018