Siemens LMV37.4 Series - Traveling Speed; Maximum Curve Slope

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Building Technologies Basic documentation LMV37.4... CC1P7546en
10 Electronic ratio control 17.12.2018
10.3.2 Traveling speed / maximum curve slope
The rise time required to modulate from low-fire to high-fire can be set via parameter
544.
The following maximum curve slopes (positioning angle) can be achieved depending on
the set ramp-up time (parameter 544):
Type of
actuator
Positioning
speed
Modulation
32 s
Modulation
48 s
Modulation
64 s
Modulation
80 s
Positioning angle ²) Positioning angle ²) Positioning angle ²) Positioning angle ²)
Actuators (3 Nm) 5 s / 90° 31° 46° 62° 77°
Actuator SQM33.6 10 s / 90° 15° 22° 30° 37°
Actuator SQM33.7 17 s / 90° 9° 1) 13° 18° 22°
VSD 5 s / 100% 40 % 60 % 80 % 100 %
10 s / 100% 20 % 30 % 40 % 50 %
20 s / 100% 10 % 15 % 20 % 25 %
30 s / 100% 6,6 % ¹) 10 % 13 % 16 %
40 s / 100% 5 % ¹) 7.5 % ¹) 10 % 12 %
¹) Depending on the setting, the restriction of the maximum positioning angle does not permit the
maximum position of 90° to be reached
²) Maximum difference between 2 curve points
No. Parameter
522 Ramp up
523 Ramp down
544 Ramp modulating
647 No-load time for speed measurement in modulating operation [25 ms]
The setting also acts outside the operating position (refer to chapter Traveling speed).