Orton Sentry 2.0 Operating Instructions Manual page 23

Message Definition
Missing Pin
When LId appears, a two-pin connector on the back of the
board is missing.
Program Lock
With this option activated, a stored program cannot be al-
tered or removed from memory.
Low Temperature Deviation 19
This message appears when the kiln is below the
temperature deviation setting in the TEdE option.
Power Failure
The power failed during a controlled cooling segment. The
kiln temperature was below the last active cooling segment
temperature when the power came back on.
Power Failure
The power failed. When power came back on, the tempera-
ture was below 212°F / 100°C.
Power Failure
The power failed and the temperature dropped 72°F/40°C.
Power Failure
There was a power failure during firing. The kiln continued fir-
ing after the power came back on.
Rate
RA 1, RA 2, RA 3, etc., appear during programming, in Pro-
gram Review, and in 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 degrees of temperature per hour. Every seg-
ment must have a firing rate. The number after RA is the seg-
ment number. Each segment in a firing is numbered. Pro-
gram Review 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.
Reset
The RST option erases a thermocouple offset, selects °F op-
eration, erases stored programs, and selects Type-S ther-
mocouple. 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 had a Type-K thermocouple, Type-S selected would
underfire your kiln, which is better than overfiring it. The
K-Type thermocouple is standard on most kilns.)
Safety
This is the maximum temperature the Sentry is programmed
for your kiln. It can be altered only at the factory.
Skip Segment
If you press the Skip Segment key during a firing, SKIP will
appear. If you press the key again, the firing will skip to the
next segment.
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Message Definition
Software Version
This option shows the version of software loaded into your
Sentry.
Firing Started
This appears when firing begins. Do not be concerned if it
takes a moment for the relays to turn on. The Sentry is pro-
cessing data.
Zone Temperatures 14
This option shows temperatures in each zone.
Thermocouple Type 15
Choose between types K, S, or R thermocouple. It is impor-
tant to select the correct type, or the controller will not read
temperature accurately.
Thermocouple Lag 21
The heating rate is slower than 9°F / 5°C per hour and the kiln
temperature is more than 100°F / 56°C away from the pro-
grammed temperature.
Uneven Temperature 21
This is an error message for multiple-zone kilns. It means the
temperatures of the zones are out of balance by 180°F /
100°C. This is usually caused by a miswired kiln or by a de-
fective relay.
Thermocouple Offset
Adjust the controller's temperature to compensate for tem-
perature drift, or aging, of a thermocouple.
Thermocouple Reversed
The thermocouple wires are reversed.
Temperature Deviation
The Sentry includes error messages to warn you that the kiln
is not maintaining the programmed temperature. The sensi-
tivity of the error messages is based on a temperature en-
tered in the TEdE option.
Element Test
This option is for testing the elements and thermocouples. If
you test a thermocouple with a lighter, the temperature dis-
play responds faster during Test than during IdLE display.
User Program
During 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 written record of
the programs in memory.
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