Acquisition Of Speed; Acquisition Of Speed With Proximity Switch - Siemens LMV36.520A1 Basic Documentation

Speed input X74 pin 4
Building Technologies Division
Infrastructure & Citiies Sector

13.7 Acquisition of speed

13.7.1 Acquisition of speed with proximity switch

The actual speed is acquired by an inductive proximity switch which scans a metal
sensor disk. The sensor disk must be attached directly to the motor's drive shaft. Speed
acquisition is safety-related. To facilitate the detection of the direction of rotation and to
be able to make the plausibility check with only 1 sensor, a sensor disk with angular
steps of 60°, 120° and 180° is used. It generates 3 pulse intervals of different length.
Speed acquisition is designed for the connection of different types of sensors.
Caution!
With electronic fuel-air ratio control, speed acquisition is safety-related!
We recommend using the AGG5.310 accessory set.
The absolute speed can be read out via the AZL2...
No. Parameter
935 Absolute speed
The current speed in standardized form can be read out via the AZL2...
No. Parameter
936 Standardized speed
Motor speed:
100% speed:
Sensor:
Power supply:
Switching current:
Cable length:
Sensor disk
Sensor disk and speed sensor can be ordered as accessory set AGG5.310.
0,1
ø 94
Figure 83: Sensor disk
Basic documentation LMV36...
13 Fan control
300...6500 rpm
650...6500 rpm
Inductive sensor to DIN 19234 (Namur) or
Open Collector (pnp) at U
CEsat
DC 10 V, max. 15 mA
>10 mA
Max. 3 m (sensor cable must be laid separately!)
Number of tappets:
Angular steps:
Bild 333/0309
Accuracy:
<4 V, U >DC 15 V
CEmin
3
60°, 120°, 180°
2°
133/248
CC1P7544en
25.09.2013