Over Temperature Protection; To Operate The Controller As A Single Setpoint Controller; Programming Controller - Barnstead 30400 Operation Manual

8 S & 4 16 S
EGMENT X
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 temperature to provide protection for your
workload.
To Operate the Controller as a
Single Setpoint Controller
1. Switch the circuit breaker to the "ON" posi-
tion. The setpoint temperature presently set in
the controller will appear in the lower display.
(The upper display indicates the actual cham-
ber temperature.)
2. To change the setpoint, press the UP or
DOWN button until the desired setpoint value
is displayed; then release the button.
3. The furnace will begin to heat if the new set-
point 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 pro-
gram is stored as a series of segments and can be run
once, repeated a set number of times or run continu-
ously. To create a customized program using the con-
troller parameters listed under "Controller Parameters"
at the beginning of this section, follow the procedures
outlined in the proceeding sections of this manual.
P
EGMENT ROGRAMMABLE
M /OTP
ODELS W
27