Speed Feedback Signal; Speed Input X70; Sensor Disk; Speed Sensor - Siemens LMV51 Series Basic Documentation

Speed feedback signal

Speed input
X70
Safe segregation between
mains voltage and
protective extra low-voltage

Sensor disk

Speed sensor

Selection of fan motor

254/301
Siemens Building Technologies
HVAC Products
The motor's speed can be acquired with different types of sensors. To detect the mo-
tor's direction of rotation with a sensor, a sensor disk with angular steps of 60°, 120°
and 180° is used. The sensor disk generates pulse intervals of different length.
Acquisition of speed is safety-related!
We recommend to use the accessory set AGG5.310.
To enable the acquired speed to be standardized to the range of 0...100 %, the speed
that corresponds to 100 % must be parameterized (→ «Standardization of speed»).
Motor speed:
100 % speed:
Sensor:
Power supply:
Switching current:
Cable length:
All inputs and outputs of the VSD module comply with the requirements for
protective extra low-voltage. Hence, the mains voltage section must strictly be
segregated!
Sensor disk and speed sensor can be ordered in the form of accessory set AGG5.310.
34 0.1
ø 94
Threaded hole
M8x15 at end
End of fan
of drive shaft
motor drive
shaft
Screw
7550z06e/0704
(wrench size 22)
Cup spring
Sensor disk
1. Motor supplier: Version with threaded hole M8x15
2. Standard motor plus extra machining (drilling hole and cutting thread M8x15)
Basic Documentation LMV5...
18 Addendum 3: Variable speed drive (VSD) module
300...6300 1 / min
1350...6300 1/ min
Inductive sensor to DIN 19234 or open collector (pnp)
U < 4 V, U > DC 15 V
CEsat CEmin
DC 10 V, max. 15 mA
> 10 mA
max. 100 m (sensor line must be run separately !)
Number of protrusions:
Angular steps:
Accuracy:
7550z05E/0702
Threaded plate
Sensor support
secured with:
4 screws M3x10 DIN 84
+ 4 spring washers M3
Nut M12x1
(wrench size 17)
Protective cover
of fan motor
Min 7
Assembly must be made according
to Mounting Instructions M7550
3
60°, 120°, 180°
± 2°
Sensor with
thread M12x1
CC1P7550en
13.08.2004