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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 18 Addendum 3: Variable speed drive (VSD) module 13.08.2004
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: 300...6300 1 / min
100 % speed: 1350...6300 1/ min
Sensor: Inductive sensor to DIN 19234 or open collector (pnp)
U
CEsat
< 4 V, U
CEmin
> DC 15 V
Power supply: DC 10 V, max. 15 mA
Switching current: > 10 mA
Cable length: max. 100 m (sensor line must be run
separately!)
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.
7550z05E/0702
ø 94
0.1
34
0.1
8
ø
5
0
ø
4.
3
(
2
x
)
Number of protrusions: 3
Angular steps: 60°, 120°, 180°
Accuracy: ± 2°
End of fan
motor drive
shaft
Threaded hole
M8x15 at end
of drive shaft
Screw
(wrench size 22)
Cup spring
Sensor disk
Min 7
Protective cover
of fan motor
Sensor with
thread M12x1
Nut M12x1
(wrench size 17)
Threaded plate
Sensor support
secured with:
4 screws M3x10 DIN 84
+ 4 spring washers M3
Assembly must be made according
to Mounting Instructions M7550
7550z06e/0704
1. Motor supplier: Version
with threaded hole M8x15
2. Standard motor plus extra machining (drilling hole and cutting thread M8x15)
Speed feedback signal
Speed input
X70
Safe segregation between
mains voltage and
protective extra low-voltage
Sensor disk
Speed sensor
Selection of fan motor
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