Sentry Sentry 2.0 Operations Instructions download pdf (Page 20)

AOP Outlet (AOP)

Select Vent Fan or Alarm for the Auxiliary Output

The optional “AOP” (Auxiliary Output) is an electrical

receptacle mounted in the kiln’s switch box. This outlet can

power a kiln vent or an external alarm, such as a bell. The

AOP is a special-order option that might not be on your kiln.

The choices in the AOP option:

ALAR Alarm: This choice sends power to the AOP re

ceptacle whenever the alarm sounds. (See Alarm, pages 6

& 7.) Plug in a loud bell to alert you, from a distance, that

the kiln has reached the alarm temperature.

NONE None: Use this setting if your kiln does not have

the AOP outlet.

FAN2 Do not use FAN2.

FAN3 Kiln Vent: This option adds a prompt for fan

( FN ) to each segment in Ramp-Hold (page 13). For

Cone-Fire controllers, selecting FAN3 makes the FAN

option visible on the options list (page 18).

1 From IdLE , press OPTIONS repeatedly until

AOP appears.

2 Press ENTER. Use the 1and 2keys to select ALAR

FAN3 or NONE .

3 After selecting one of the above, press ENTER.

Press STOP to return to IdLE .

Computer ID (ID)

Enter an ID Number for Connection to a Computer

This feature is for assigning an identification number,

from 1 to 15, to the controller. It is used only for hookup to a

personal computer and requires an optional kit.

1 From IdLE , press OPTIONS repeatedly until ID

appears.

2 Press ENTER. Use the 1 and 2 keys to select an ID

number from 1 to 15. Press ENTER. Press STOP to

return to IdLE .

Temperature Deviation (TEDE)

Adjust Temperature Sensitivity of Error Codes

The ideal temperature of a firing, at any given time, is

called the set point. During a ramp, the set point changes at

the rate you programmed. During a hold, the set point re

mains steady. The Sentry shows error messages when it

can’t maintain the set point. The cushion, or leeway, allowed

before an error message flashes is called Temperature Devi

ation. When the temperature is off by more than the Tem

perature Deviation setting, the alarm sounds. Temperature

Deviation affects these error messages (see page 22):

FTH Fail to Heat

FTC Fail to Cool

HTDE High Temperature Deviation

LTDE Low Temperature Deviation

To turn these error codes off, enter a Temperature Devi

ation of 0.

CAUTION: The High Temperature Deviation

(HTDE) alarm shuts off the kiln to prevent an

overfire. Entering a temperature deviation of 0

shuts off this important alarm! Programming a fir

ing at FULL rate (1799°F/999°C or higher rate) will

also shut off the deviation alarms for that firing.

1 From IdLE , press OPTIONS repeatedly until

TEDE appears.

2 Press ENTER. Change the deviation temperature.

Press ENTER. Press STOP to return to IdLE .

Example: The Fail to Heat code FTH appears during

firing, because the kiln could not heat as fast as pro

grammed. The Temperature Deviation TEDE is 60°F. The

Fail to Heat code appeared when the temperature was 60°F

below the set point.

Maximum Temperature (SFTY)

View the Kiln’s Maximum Operating Temperature

From IdLE , press OPTIONS repeatedly until SFTY ap

pears. Press ENTER. The temperature displayed is the max

imum operating temperature programmed in the Sentry for

your kiln. It can be altered only at the factory. Press ENTER.

Press STOP to return to IdLE .

Electronics Temperature (ELEC)

Check the Circuit Board Temperature

High temperatures in the switch box can damage the con-

troller circuit board, which is rated for 158°F/70°C maxi-

mum operating temperature. If necessary, exhaust hot air

from the room to lower board temperature.When firing sev-

eral kilns, position them at least three feet apart to allow ade-

quate air circulation.

From IdLE or while firing, press OPTIONS repeatedly

until ELEC appears. Press ENTER. The temperature of the

circuit board will appear. Press ENTER. Press STOP to re

turn to IdLE .

Program Lock (LOCK)

Make a Program Tamper-Proof

With Program Lock activated, a stored program cannot be

altered or removed from memory. Use Program Lock for re

peat firings that you don’t want to inadvertently change.

Note: Program Lock does not save a Delay setting.

While a program is locked, you can enter a new

Delay.

1 From IdLE , press OPTIONS repeatedly until

LOCK appears.

2 Press ENTER. LO (locked) or UN (unlocked)

will appear.

3 To change the setting, press DELAY 3 times.

4 Press ENTER. Press STOP to return to IdLE .

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Sentry Sentry 2.0 Operations Instructions Page 20

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