1 Measuring plate
3 Disc (non-conducting material)
2 Proximity switch
Illustration 28: Gear Wheel for Proximity Switch
The operating distance S set to half the nominal operating distance S
n
, corresponds approximately to the optimum conditions
regarding resolution and switching frequency.
NOTICE
When using PNP proximity switch as encoder feedback, set parameter 42-14 Feedback Type to [1] Without direction info.
4.2.4 VLT® Sensorless Safety MCB 159
The VLT® Sensorless Safety MCB 159 option provides safe speed monitoring functions (SLS, SMS) to a VLT® Safety Option MCB 151
without the need of an external speed signal. It can easily replace a speed sensor in applications where typically proximity switches are
used as a speed feedback. Only 1 wire connects the MCB 159 option to the MCB 151.
Installation
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292 | 47
Danfoss A/S © 2018.09
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