West Control Solutions D280-1 - Manual (Page 16)

g
The variable to be monitored can be selected seperately for each alarm via
configuration
The following variables can be monitored:
w process value
w control deviation xw (process value - set-point)
w control deviation xw + suppression after start-up or set-point change
As there is automatically a control deviation after starting up and after
set-point changes, however, the alarm is suppressed, until the signal was
within the limits once.
w Set-point
w Correcting variable y (controller output signal)
g
If measured value monitoring + alarm status storage is chosen ( ConF / Lim /
Fnc.x = 2), the alarm relay remains switched on until the alarm is resetted in the
error list (
Lim 1..3 = 1) or via interface.
3.4 Maintenance manager / Error list
In case of one or several errors, the extended operating
level always starts with the error list. A current entry
into the error list (alarm or error) is displayed by the
Err LED in the display.
For displaying the error list, pressing 1x Ù is necessary.
(with configuration as a controller, press 2x Ù).
Err LED status Signification Proceed as follows
blinks Alarm due to
existing error
- Determine the error type in the error list via the error number
- Remove the error
lit Error removed,
Alarm not
acknowledged
- Acknowledge the alarm in the error list pressing key È or Ì
- The alarm entry was deleted.
off No error, all alarm entries deleted
g
Saved alarms (Err-LED is lit) can be acknowledged and deleted with the digital
input di1/2/3 or the Ò-key.
Configuration, see page 31:
ConF / LOGI / Err.r
g
If an alarm is still valid that means the cause of the alarm is not removed so far
(Err-LED blinks), then other saved alarms can not be acknowledged and deleted.
Error status Signification
2 Existing error Change to error status 1 after error removal
1 Stored error Change to error status 0 after acknowledgement in error list
0 No error/message not visible, except with acknowledgement
Operation
16 Maintenance manager / Error list Digital 280-1
FUNC
ADA
OUT1
OUT2
OUT3
ERR
Digital 280-1