26
NDX VALVE CONTROLLER
8.3
Installation to any rotary actuator
NDX can be easily installed to any rotary actuator when the
following installation rules are followed. In order to guar
antee the best possible position measurement accuracy,
NDX and position feedback magnet must be positioned
according to the following guidelines.
NOTE
Use only Metso original magnets. Bracket and
fixing bolt material should have low magnetic
permeability (e.g. AISI316 or aluminium).
Aim for small mechanical clearance, but avoid contact.
there shall be max 5 mm gap between the magnet and
NDX. Tilt is not critical. Aim for zero eccentricity. Polarity
of the magnet is irrelevant.
Figure 27 shows the exclusion zone. There is no material
limitation outside the exclusion zone, but to guarantee the
optimal performance do not use any magnetic material
inside the zone. Inside the exclusion zone but close to the
”walls” AISI 304 and any austenitic steel can be used.
Fig. 28 Exclusion zone for magnetic material.
8
ROTARY MOUNTING
Содержание NELES NDX 511 Series
Страница 80: ...80 NDX VALVE CONTROLLER 15 1 NDX1510 LINEAR APPLICATION ROTARY APPLICATION Fig 98 15 DIMENSION DRAWINGS ...
Страница 82: ...82 NDX VALVE CONTROLLER 15 3 NDX_512_ Tightening torque 15 Nm 48 Fig 100 15 DIMENSION DRAWINGS ...
Страница 84: ...84 NDX VALVE CONTROLLER Fig 103 NDX_511_ Fig 104 NDX_512_ 15 DIMENSION DRAWINGS ...