Watlow 12LS Controller - Manual (Page 106)

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9.0 GLOSSARY OF TERMS
Address The ANAFAZE controller address used in computer
communications. Each controller must have a
separate address beginning with 1. The default is
1.
AC Frequency The frequency of the power line, 60 Hz or 50 Hz
.
Control The movement of the control relative to the error
Action between the process variable and the setpoint. For
reverse action [heat], as the process
decreases below the setpoint the output
increases. For direct action [cool], as the
process increases above the setpoint the output
increases.
Alarm Delay The time in minutes that alarm functions are
delayed when the controller is started (initial
powerup).
Alarms Four alarms are available for each loop. A High
Process and a Low Process Alarm with High
Deviation and a Low Deviation Band Alarm are
assigned to process variables. They remain
unchanged from segment to segment during ramp and
soak. However, since a deviation alarm is relative
to setpoint, and the setpoint varies during ramp
and soak the deviation alarm will "track" the
setpoint during a ramp and soak cycle.
The global alarm output will be active when any
alarm condition exists and the alarm has been
turned on. Logic outputs can be assigned to any
alarm, and in fact one logic output can be
assigned to any number of alarms. In this case,
the logic output will be active whenever any of
its assigned alarms is active.
Alarms must be acknowledged before the display
annunciation or the global alarm output will be
cleared. However, an assigned alarm output will
clear when the alarm clears whether or not it has
been acknowledged.
Auto Mode The loop mode in which the PID control output is
set by the controller in response to the process
variable.
Baud Rate The serial bit transfer rate for controller to
computer communications. May be set at 9600 or
2400 baud. The default is 9600.