SMAR FY301, Instruction, Operations & Maintenance Manual

Page: 11 / 82

Installation
1.3
NOTE
Make sure that the arrow engraved on the magnet coincides with the arrow engraved on the positioner when
the valve is in mid travel.
When mounting the magnet, be sure that:
1. There is no attrict between the internal magnet face and the position sensor salience during the
travel (rotary or linear), through the magnet.
2. The magnet and the salience of position sensor must not be distant.
A minimum distance of 2 mm and a maximum distance of 4mm are recommended between the magnet
external face and t he positioner face. For that, a centralizer device (linear or rotary) must be u sed. The
centralizer device is in the positioner packing.
Case the positioner installation or magnet change or if any other modification is done, the positioner
will require a re-calibration. See Section 3 (Setup - for Auto Setup procedure).
See item “Pneumatic Connections” as recommended practice to install the positioner to the valve
type.
Linear Movement
Install the magnet on the valve stem using its proper bracket, according to Figure 1.3.
Install the positioner bracket on the actuator. The fastening of the actuator bracket may follow the
NAMUR/IEC 60534-6-1 standard or be in accordance with the user specified boring. Mount the
positioner on the bracket by fastening the four screws in the holes of the pressure gauges opposite
face. Use lock washers to avoid loosening the screws.
The linear magnet movement must be or thogonal in relation to the main axis of the position
positioner. For example, if the linear magnet movement is vertical, the positioner main axis must be
horizontal, as show in Figure 1.3.
OUT 2 OUT 1
IN
POSITIONER
M6x1 SCREWS
(4 PLACES)
LINEAR MAGNET
VALVE YOKE
VALVE STEM
CENTRALIZER DEVICE
LINEAR MAGNET
BRACKET
POSITIONER
BRACKET
Figure 1.3 - Positioner on the Linear Actuator
NOTE
Included in the package content the
centralizer device of linear magnet.
See figure 1.16.