Barnstead F46110CM Operation Manual page 21

NOTE
Barnstead|Thermolyne recommends
that you set the value of AL1 either at
maximum operating temperature of the
furnace or at a value of 20 degrees
above your working temperature if you
desire to provide protection for your
workload.
NOTE
The upper display will flash "OR" if an
open thermocouple condition exists.
NOTE
To change from °C indication to °F
indication, contact Barnstead/
Thermolyne.
O
PERATION OF
ST = Self Tune automatically loads PID values on initial
start up. This function does not have a value, it is either
ON or OFF. (See Furnace Operation for function of Self
Tune.)
AT = Adaptive Tune analyzes and inputs optimum PID
values when temperature has reached setpoint. This
function does not have a value, it is either "ON" or "OFF".
(See Furnace Operation for function of Adaptive Tune).
SAT = Self Adaptive Tune when engaged starts controller
off in self-tune mode, then automatically switches to
Adaptive Tune (AT). This function does not have a value,
it is either "ON" or "OFF". (See Furnace Operation for
function of Adaptive Tune).
ATR = Adaptive Tune Range setting determines the
operational band width of the adaptive tuning function.
Self-tuning
automatically determines this setting.
AL1 = Alarm 1 is a full scale alarm which protects load
and
furnace when temperature exceeds preset value. Fur-
nace will control temperature at the preset temperature
value, it will not shut off furnace.
The next five parameters, proportional (PB), integral (+i),
derivative (+d), cutback low (cbl) and cutback high (cbh),
are for high accuracy control. These values cannot be
changed by the user; the controller automatically installs
optimum values when in Self and Adaptive Tuning.(See
Tuning Your Furnace for more information.).
HL = Output Power limits the average maximum percent-
age of electricity that is applied to the heating elements.
Depress and release up or down button. If "100" is not
displayed, contact Barnstead/Thermolyne.
Sbr = the percent of power that is supplied to the control
output terminals if an open thermocouple condition
exists.
Push up or down button. This parameter cannot be
changed, if 0.0 is not displayed, contact Barnstead/
Thermolyne.
P M
ROGRAMMABLE ODELS
21