OPERATION
Series 590
46/56
Edition 2013-05-13
298292EB
Failure
Check
Action
-
Pressure reading is wrong
or
-
pressure reading is negative
-
Sensor(s) connected?
-
Refer to chapter «Electrical connection».
-
Check valve version on page 1. Verify configuration.
Refer to chapter «Setup procedure».
-
Does sensor power supply
provide enough power for
sensor(s)?
-
Verify sensor supply voltage.
-
PRESSURE CONTROL does not
work
-
Safety mode active, check for
D on display?
-
Provide power to motor to allow for operation.
-
Refer to chapter «Electrical connection» for details.
-
PRESSURE CONTROL
selected, check for P on
display?
-
Select PRESSURE CONTROL mode.
-
Refer to chapter «Pressure control» for details.
-
Fixed PI done?
-
Perform Fixed PI.
-
Refer to chapter «Setup procedure» for details.
-
PRESSURE CONTROL not
optimal
-
Setup done completely?
-
Perform «Setup procedure» completely.
-
Fixed PI done?
-
Perform Fixed PI.
-
Fixed PI interrupted?
-
Repeat Fixed PI.
-
Repeat Fixed PI with stable gas flow.
-
Optimizing fixed PI done?
-
Optimizing fixed PI for application.
-
Refer to «Optimize P-Gain, I-Gain » for details.
-
Is sensor range suited for
application?
-
Use a sensor with suitable range (controlled pressure
should be >3% and < 98% of sensor full scale).
-
Noise on sensor signal?
-
Make sure a shielded sensor cable is used.
Table 5-7
If you need any further information, please contact one of our service centers. You
will find the addresses on our website: www.vatvalve.com.