TM
Page 14
Reference manual Foundation Fieldbus Control module
DOC.RM.QC34.E Rev: A
October, 2006
3.4 Troubleshooting To solve this:
1 Check table 3.4 and try the suggested solution to
solve the problem.
2 Check Actuator assembly code (see Installation &
Operation Manual FieldQ Valve Actuator,
DOC.IOM.Q.E)
3 Repeat the initialization procedure (see §3.2).
4 When the actuator does not move within 10
seconds, the auto initialization will fail.
To solve this either;
- perform the “default setting” procedure (see
§3.4.1) and repeat the initialization procedure
(see §3.2), or
- set the limit switch points individually by the bus
see (see §3.4.4)
3.4.3 If the position feedback is reversed.
1 Go to Transducer block.
2 To set the "Open" position;
Set sub parameter OPEN_END_POSITION of
parameter CFG_SWITCH_POINTS to:
"set to current position".
The "Closed" position will change automatically.
3 To set the "Closed" position;
Set sub parameter OPEN_END_POSITION of
parameter CFG_SWITCH_POINTS to:
"set to current position".
The "Open" position will change automatically.
Note:
- If "Shutdown" is activate (see 4.2.3.3), check if
"Action" is still "OK".
3.4.1 “Factory default settings”, using the
button board.
To set the control module to its factory default set-
tings, do the following;
1 Connect power according chapter 4 and observe
that the Status LED is either on or flashing.
2 Disconnect the power.
3 Press both reassignment buttons.
4 Reconnect power.
5 Status LED goes on.
6 Release the reassignment buttons.
7 Observe that the Status LED indicates that the unit
is in its “Init Default” state (flashing)
3.4.2 If auto initialization procedure has
failed
If the auto initialization has failed, the status LED on
the module will flash and the status of the
AUTO_INITIALIZATION parameter will indicate a
posible cause:
Table 3.4 Status of the initialization
procedure:
Error Solution
Undetermined bad Check air-pressure at the
repeatability actuator and/or actuator sizing.
Running,
Aborted Operator: restart
Undetermined Difference between open
and close position too
small. Check proper stroking of
the actuator/valve unit.
Time Out It takes too long before end-
positions are found.
Check air-pressure at the
actuator and/or actuator sizing.
Range Error Difference between open and
closed end position is too
small.
Check air-pressure, check
proper valve rotation.
Successful
No Valid Data Not initialized,
start initialization
