Alfa Laval LeviMag, Instruction Manual, Page: 50 / 68

8 Technical data
8.12 Connection to frequency converter
For programming of frequency converter please follow the converter’s manual.
All required data for programming the converter can be found on the name plate of the motor or in section 8.3 Drive unit data –
IE4 standard blue.- 8.7 Drive unit data – Class1 Div1 Group D and in Table 1 (section 8.10 Connection of motor).
NOTE
For ATEX option ensure the frequency converter is installed ATEX approved according to EN 60079-14 §11.2.
8.13 Connection of Speed Sensor
The Speed Sensor is a magnetic inductive proximity sensor which is actuated by magnetic fields and can detect the permanent
magnet in the impeller through non-magnetic tank material.
The impeller "prepared for sensor" has an extra permanent sensor magnet built into it.
NOTE
The Speed Sensor must be connected to an isolating switching amplifier of a type e.g. like the one shown in the datasheet in
section 11.2 Speed Sensor instructions. When connected the Speed Sensor’s transparent part (white area) will flash shortly for
every full rotation done by the impeller.
4307-0116
Step 1
Mount the Speed Sensor as described in section 3.6 Speed Sensor (accessory).
If required, the cabling must be extended enabling the Speed Sensor to be connected to the isolating switching amplifier.
Step 2
Connect the Speed Sensor to the isolating switching amplifier according to the instruction by the supplier.
Step 3
A counter device must be connected to the isolating switching amplifier to measure the precise speed of the impeller.
50