Samson 3730-2 Mounting And Operating Instructions page 71

54 Init – Solenoid valve
Transit time <
55
56 Pin pos.
Operating error (indicated by the fault symbol on the display)
57 Control loop
Additional message at the fault
alarm contact!
Zero point
58
59 Auto correction
1) A solenoid valve is installed (Code 45 = YES) and was
not or not properly connected so that an actuator pressure
could not be built up. The message appears when you
attempt to initialize the positioner.
2) If you attempt to initialize the device from the fail-safe
position (SAFE).
Remedy Re. 1) Check connection and supply voltage of the solenoid
valve.
Re. 2) Set the MAN operating mode over Code 0. Then initialize
the positioner.
The actuator transit times determined during the initialization are
so short that the positioner cannot adapt itself optimally.
Remedy Check the volume restriction setting as described in section 5.2,
re-initialize the positioner.
Initialization was canceled because you are required to enter the
pin position for the selected initialization modes NOM and SUb .
Remedy Enter pin position over Code 4 and nominal travel/angle over
Code 5. Re-initialize the positioner.
Control loop fault, the control valve does not react within the tol-
erable times of the controlled variable (tolerance band alarm
Code 19).
• Actuator mechanically blocked.
• Attachment of the positioner subsequently postponed.
• Supply pressure not sufficient.
Remedy Check attachment.
Zero point incorrect. Error may arise when the mounting posi-
tion/linkage of the positioner moves or when the valve seat trim
is worn, especially with soft-sealed plugs.
Remedy Check valve and mounting of the positioner. If OK, perform a
zero calibration over Code 6 (see section 5.8 on page 53).
Should an error occur in the data range of the positioner, the
self-monitoring function recognizes it and automatically corrects
it.
Remedy Automatic
Code list
71
EB 8384-2 EN