119
Servicing
Changing EPROMs
Changing a data EPROM
Pull out mains connector
or a
program EPROM
Release and remove front panel
Pull out processor card (card fully to the left) and lay it down,
remove any auxiliary card (on processor card).
Carefully remove modules and replace with new ones.
Make sure that
-
the module points in the correct direction (notches of the upper module row
and the lower module row are on opposite sides)
-
all prongs are correctly inserted in the base
-
the correct module is changed
Press in firmly again
plugging any auxiliary card back in
Push the card back into the unit
Push on front panel
Push cards right in
Screw down
Plug mains connector back in
If a new program EPROM has been inserted D proceed as described
on page 118
___________________________________________________________________
Mixing up the data EPROM and program EPROM can destroy the unit.
___________________________________________________________________
If a unit is changed and the previously programmed curves are to be inserted
into the new unit, care must be taken to ensure that both the data EEPROM of
the main processor and the EEPROM of the monitoring processor are
transferred to the new unit.
Unless the data have been backed up on PC. Then it is sufficient to record
them onto the new unit.
___________________________________________________________________
Re-entering range limits
When adjusting the limit stops after programming, the range limits must be
redefined.
___________________________________________________________________
Selector switch (2) to "Clear memory”
Press Acceptance (3)
-
the curve and the range limits are cleared
Selector switch (2) back to "Automatic”
-
"restore previous curve" appears on the display
-
Channel key 3 (5) upwards
-
"Read old curve” appears on the display
-
since no point has been entered, the old curve is reactivated, but the range
limits remain cleared
Allow system to pre-ventilate
-
new range limits are re-entered
___________________________________________________________________
This can be observed at "set-point” switch setting. Without limits, the set-point
is 0 or 999. If the limit is defined the set-point skips to the actual value.
___________________________________________________________________
x
x
x
3
AUTOMATIC
LAMTEC
LAMTEC
x
2
CLEAR
MEMORY
ENTER
!
i
