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8 S
P
EGMENT
Over-Temperature Protection
(OTP)
The OTP will be in effect during any alarm condition when
the temperature of the furnace has deviated beyond the
limit. The "Deviation High" alarm is the only alarm value
which can be changed. To change it, press the SCROLL
button until "idHi" appears on the display. Press the UP or
DOWN button to select the OTP value you desire. We
recommend a value of 20° above your working tempera-
ture to provide protection for your workload.
To Operate the Controller as a
Single Setpoint Controller
1.
Switch the circuit breaker to the "ON" position.
The setpoint temperature presently set in the
controller will appear in the lower display. (The
upper display indicates the actual chamber tem-
perature.)
2.
To change the setpoint, press the UP or DOWN
button until the desired setpoint value is dis-
played; then release the button.
3.
The furnace will begin to heat if the new setpoint
temperature is higher than the present chamber
temperature.
Programming the Controller
The controller is capable of varying temperature or
process value with time through programming. A program
is stored as a series of segments and can be run once,
repeated a set number of times or run continuously. To
create a customized program using the controller parame-
ters listed under "Controller Parameters" at the beginning
of this section, follow the procedures outlined in the pro-
ceeding sections of this manual.
M
ROGRAMMABLE
ODEL W
/OTP
25
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