Greenheck El-O-Matic E and P Series - Manual (Page 9)

7.
Calibration - Initial Settings - Cam Changes
Initial Settings
The factory settings provide the positioner with an initial
range of settings that will allow the operation of position-
ers on most applications.
Signal Input - 0.2 to 1.0. bar. (3-15 psi).
Range - 0% to 100%
Control Function - Linear.
Action
- Direct Acting.
(Opening on increasing Signal in
CCW-direction).
The F10 positioner is provided with the following features
for making changes to the initial settings:
Zero By the external zero adjustment screw.
Range By the internal range adjustment ring.
Range Spring The standard range spring is suitable for
normal operation and split ranging.
Cam Segment Six segments are provided for the rotary
positioner and eight segments for the
linear positioner (see table).
Cam Changes
Remove the cover and indicator from the positioner
exposing the Cam. The Cam is double sided: CCW for
direct acting, CW for reverse acting.
If the actuator is fully clockwise and the actuator is to
rotate CCW on instrument signal increase, the Cam
should be on the “CCW” side and the start marking
should be in line with the Cam Follower Bearing. If the
actuator is fully counterclockwise and the actuator is to
rotate CW on instrument signal increase, the Cam should
be on the “CW” side and the start marking should be in
line with the Cam Follower Bearing.
If the cam is not in the correct position, change as fol-
lows:
1. Remove the cam nut (1).
2. Re-install the cam plate in the correct position, taking
care that the correct segment is adjacent to the cam
follower (2).
3. Replace the cam nut and fix it.
4. Replace the indicator disk, taking care that it in the
correct position.
90°
Standard setting
CCW Direct
CW Reverse
Initial settings
1.0 bar
0.2 bar
0°
0
Cam Segment
Rotary actuator Linear actuator
90° CCW 90° CW 40° CCW 40° CW
lin lin lin lin
=% =% =% =%
QO QO QO QO
* * SR SR
lin = linear
=% = equal percentage
QO = Quick Opening
SR = Split Range
*
= Special cam split range
Top view of cam
Rotary actuator
Cam 90°
Linear actuator
Cam 40° (49°)
1
2