Avid Technology SMARTCAL, Installation And Operation Manual

Page: 35 / 55

CRANE CO.
280 N. MIDLAND AVE., STE 258, SADDLE BROOK, NJ 07663 WWW.AVIDCONTROLS.COM
12/17/12 TECH-440/D.W.O. 23135 Page 35 of 55
7.2 LCD error messages
The SmartCal 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:
Message Meaning Solution
Valve
position
unstable Position is
unstable or
oscillating too
much during
calibration Check:

Hall sensor connector and cable, especially if remote (see
Figure 3-4, connector J8)

Pressure supply stability

Actuator and tubing leaks

Magnet assembly in correct position and tightly coupled

Set-point stability

Actuator/Valve assembly integrity

Sources of electromagnetic noise too close to the sensor or to
the positioner cables, like AC cables for motors, inverters etc

Perform a full auto CAL

Call factory for additional support
HALL
sensor rail
error Position error
during PID
calibration Check:

Hall sensor connector and cable, especially if remote (see
Figure 3-4, connector J8)

Pressure supply stability

Actuator and tubing leaks

Perform a full auto CAL

Remove power for at least 1 minute, perform a factory default
(see Appendix I) and retry a full auto CAL

Call factory for additional support
PID gain
error PID calibration
was not able to
find proper gain
values and
control the valve
position Check:

Hall sensor connector and cable, especially if remote (see
Figure 3-4, connector J8)

Pressure supply stability

Actuator and tubing leaks

Actuator/Valve assembly integrity

Perform a full auto CAL

Remove power for at least 1 minute, perform a factory default
(see Appendix I) and retry a full auto CAL

Call factory for additional support
Transducer
PWM error During
calibration an
error occurred
with the PWM
signal that
control the
spool-valve
driver Check:

Cable between the inner canister and the pneumatic
transducer assembly is tightly connected

Cable and connector between the transducer board and the
spool-valve coil

Perform a full auto CAL

Remove power for at least 1 minute, perform a factory default
(see Appendix I) and retry the calibration

Call factory for additional support