Sentry Industries Sentry 2.0 - Manual (Page 25)

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IdLE Ready to Begin 5
The Sentry must display the IdLE message before you can begin
firing or programming.
LId Lid is Open 5
When LId appears, the kiln is equipped with a lid safety
switch, and the lid (or door) is open during firing. Or a two-pin
connector on the back of the board is missing.
LOCK Program Lock 20
With this option activated, a stored program cannot be altered or
removed from memory.
LTdE Low Temperature Deviation 22
This message appears when the kiln is below the Temperature
Deviation setting in the TEDE option.
OFST Cone Offset 17
Adjust a Cone-Fire program to bend the matching witness cone
on the kiln shelf.
PF 2 Power Failure 22, 23
The power failed. When power came back on, the temperature
was below 212EF/100EC.
PF 3 Power Failure 22, 23
The power failed near the end of a firing.
PF Power Failure 22, 23
There was a power failure during firing. The kiln continued firing
after power came back on.
PLOG Diagnostic Test Failure 23
PRHT Pre-Heat 9, 10
In a Cone-Fire program, Pre-Heat heats the ware slowly to
200EF/93EC for the length of time you specify. Pre-Heat is de-
signed to remove moisture safely from greenware.
RA 1 Rate 13
RA 1, RA 2, RA 3, etc., appears in Ramp-Hold programming, Pro-
gram Review, and Present Status. When RA 1, 2, 3, etc. appear
during programming, the controller is asking you for firing rate for
each segment. Rate means how fast the firing progresses, in de-
grees of temperature per hour. Every segment must have a firing
rate. The number after RA is the segment number. Each segment
in a Ramp-Hold firing is numbered, starting with 1. Program Re-
view shows firing rate after RA 1, 2, 3, etc. In Present Status, RA 1,
2, 3, etc. means the segment that the firing is in at that moment.
RST Reset 21
The RST option erases cone and thermocouple offsets, selects
EF operation, erases stored programs in Ramp-Hold, and se-
lects Type-S thermocouple. Note that if you use Reset, and your
kiln is equipped with a Type-K thermocouple, you must use the
TC option to select Type-K. (Reset selects Type-S as a safety
precaution. If you had a Type-S thermocouple and Reset se-
lected Type-K, your kiln would overfire. On the other hand, if you
have a Type-K thermocouple, Type-S selected would underfire
your kiln. The type K thermocouple is standard on most kilns.)
S 20 Slow Speed 17
Cone-Fire slow speed shows in Program Review as S 20. This is
also how slow speed is listed in the SPd Speed option.
SFTY Safety 20
This is the maximum temperature the Sentry is programmed for
your kiln. It can be altered only at the factory.
Message Definition Page Reference
SKIP Skip Segment 7
If you press the Skip Segment key during a firing, SKIP will ap-
pear. If you press the key again, the firing will skip to the next seg-
ment.In Cone-Fire, Skip Segment takes you only out of Pre-Heat
or Hold.
SLOW Slow Speed 10
In Cone-Fire programming, if you press ENTER when SLOW ap-
pears, the kiln will program to fire at slow speed.
SOFT Software Version 21
This option gives the version of software loaded into your Sentry.
SPd Speed 10, 17
The SPd message appears during Cone-Fire programming and
in Options. In the SPd option, accessed through the option key,
change the speed of a Cone-Fire program beyond the standard
fast, medium or slow. While programming a firing for Cone-Fire,
choose slow, medium or fast speed at the SPd prompt.
STd Standard Speed 17
Cone-Fire medium speed appears in the Sentry as STd, or Stan-
dard. This is because medium speed is the standard firing pro-
gram used in Cone-Fire. Fast and Slow speeds alter the stan-
dard firing program.
STRT Firing Started 10, 13
This appears when firing begins. Do not be concerned if it takes a
moment for the relays to turn on. The Sentry is processing data.
T123 Zone Temperatures 21
This option shows temperatures in each zone.
TC Thermocouple Type 19
Choose between types K, S, or R thermocouple. It is important to
select the correct type, or the controller will not read temperature
accurately.
TcdE Uneven Temperature 23
This is an error message for multiple zone kilns. It means the tem-
peratures of the zones are out of balance. This is usually caused
by a miswired kiln or by a defective relay.
TCOS Thermocouple Offset 18
Calibrate the controller’s temperature. This compensates for
temperature drift, or aging, of a thermocouple.
TCR Thermocouple Reversed 23
The thermocouple wires are reversed.
TEDE Temperature Deviation 20
The Sentry includes error messages to warn you that the kiln is
not maintaining the programmed temperature. The sensitivity of
the error messages is based on a temperature entered in the
TEDE option.
TEST Element Test 21
This option is for testing the elements and thermocouples. If you
test a thermocouple with a lighter, the temperature display re-
sponds faster during Test than during IdLE display.
USER User Program 13, 14
In Ramp-Hold programming, the USER prompt is asking you
where you want to place the program in memory. The Sentry has
four spaces in memory: 1, 2, 3, 4. Keep a record, on paper, of the
programs in memory.
Message Definition Page Reference