WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 44 of 206
7.2.5
A Calibration Error is returned during a Lo or Hi Calibration.
In the case of a rotary application, the beacon may be misoriented or the actuator may
not have enough rotation. The positioner requires the actuator to stroke a minimum of
45 degrees.
In the case of a linear application, the feedback magnet assembly needs to be ordered
specific to the stroke of the actuator and the fail direction of the actuator (See Figure 7-
1 & Figure 7-2). Also, please check if the magnet center is close to the actual 50%
position of the actuator stroke. If not try to align the center of the magnet to the mid-
stroke point of the actuator’ stem.
7.2.6
The Integrator Overflow message is shown on the display.
This message indicates a deviation between position and set-point.
If this error returns, make sure that all the preliminary checks, as described earlier in
this section, have been made. If the cause for the Integrator Overflow error cannot be
diagnosed, please contact Westlock for support. Please make sure that the valve is not
stuck or if there is no air leakage in the actuator-positioner connections or if the working
pressure is too different (50%) from the calibrated pressure.
7.3 LCD Alert Codes and Error Messages
7.3.1 LCD Alert codes
PA-OOS
There is no communication in the fieldbus segment
PA-CTR
The position set point is calculated by the PA application
LO-CTR
The position set point is overridden by the ICoT (e.g.: Calibration)
FSTATE
The ICoT is in Fault state
NO RUN
The SP is not being calculated.
WRG_CH
The
configured
channel is not valid
UNDEF
The channel is undefined
MANUAL
The transducer mode block actual is set to MAN
7.3.2 LCD Error Messages
The ICoT positioner has built-in diagnostics that allow the user to identify and resolve
most of the common installation and operation problems. The following table lists the
available messages, their meaning and recommended solutions:
