Travel Sensor Alignment - GE Masoneilan SVI II ESD Installation And Maintenance Manual

Travel Sensor Alignment

Table 5 shows the general guidelines for travel sensor alignment. Review the table prior to
installing the SVI II ESD on a rotary valve actuator for proper alignment of the magnet.
Rotary
Mounting
System
Rotary
General Rule for
other configu-
rations
Dismantling the SVI II ESD from Rotary Valves
To remove the SVI II ESD PST controller from a rotary valve perform Steps 1 - 9 on page 461 in
reverse.
© 2016 General Electric Company. All rights reserved.
Table 5 Travel Sensor Alignment
Stroke Direction
<60° Rotation
Clockwise or counter-
clockwise rotation
>60° Rotation
Clockwise with increas-
ing setpoint
>60° Rotation
Counter Clockwise
rotation with increasing
setpoint
Any amount of rotation
Clockwise or counter-
clockwise
Before carrying out any work on the device, power off the
WARNING
instrument or ensure that the device's location conditions for
potentially explosive atmosphere permit the safe opening of the
cover.
Magnet Valve Position
Orientation
Closed (0%)
(0°)
Full Open
or
Full Closed
(-45°)
Full Open
or
Full Closed
(+45°)
50% Travel
(Mid-Stroke)
(0°)
Masoneilan SVI II ESD Installation and Maintenance Manual
Sensor Counts
0 +/- 1000
-8000 +/- 1500
or
+8000 +/- 1500
-8000 +/- 1500
or
+8000 +/- 1500
0 +/- 1000
| 63
=