6. ERROR CODES (ErCd) or ERROR CHECKING
The zone control has the same standard error checking features of the single zone controller. Errd was introduced to
monitor whether any zone or section gets more than 100 degrees above the travelling set-point but this feature also
functions with the single zone controller. Errd may be triggered with a zone control if a thermocouple is in the wrong
section, there is crossed output wiring, or a relay is stuck on. Errd may be triggered in a single zone controller if there
is a stuck relay or a stuck output.
Turning error codes off with the zone control also turns the “lag” feature off. “rSEt” turns error checking on.
Caution should be taken when choosing to turn the errors off because it leaves the kiln vulnerable to malfunctions that
would normally be detected by the error codes.
7. “Other” MENU - New zone features accessed using the “Other” button
There are ten functions accessed through the “Other” button - reset (rSEt), preheat (PrHt), identification number (Id),
16 segment program (16 – S), cone offset (CnoS, change temperature scales (CHG
°
), error codes on/off (ErCd),
thermocouple offsets (tCoS), LAG setting (LAG), and board temperature (bd t).
NOTE: The “other” functions can only be accessed when the kiln is at Idle.
RESET (rSEt)
press “OTHER” UNTIL rSEt is displayed then press “ENTER”. CPL will be displayed indicating
that the T/C offsets have been set to zero, the LAG to 13, and error codes (ErCd) set to “on”.
PREHEAT (PrHt) , CONE OFFSET (CnoS), CHANGE F/C (CHG
°
)
all work as described in the OPTIONS
SECTION under Programming.
ERRORS ON/OFF (ErCd)
(also referred to as error checking) works as described in the previous section but it will
also turn off the LAG (suspend ramping) when errors are turned off.
T/C OFFSETS (tCoS)
(see also OPTIONS SECTION under Programming) are used to raise or lower the
temperature indicated by any of the thermocouples. The maximum offset is 50
°
F (28
°
C). A positive offset is entered
with 00 preceding the amount of offset and a negative offset is preceded with 90. The use of 00 for "+" and 90 for "-"
is the same as is done for entering cone offsets. A negative offset will lower the indicated temperature reading and
cause more heat-work. A positive offset will increase the indicated temperature reading and decrease heat work.
When tCoS is displayed, press ENTER and tC 1 will be displayed. Press enter and the current offset for the top
thermocouple will be displayed. Enter the offset you want then press ENTER and tC 2 will be displayed. Repeat the
above steps for tC 2 and tC 3.
LAG
is the number of degrees any zone can lag the travelling set-point before ramping is suspended. Ramping will
continue as soon as the slow zone catches up. LAG is programmable with a maximum setting of 99. A smaller LAG
gives tighter control but usually slows the ramp rate because the local set point will only advance as fast as the
slowest zone. Reset programs LAG to 13.
bd t
will indicate the temperature of the circuit board and is also used for diagnostics.
