Watlow Series 1500 - Manual (Page 86)

Derivative:
Deviation:
DIP switch:
Dual In-line Package (ON/OFF) switch.
Display capability: In a digital indicating instrument, the entire span that can be indiiated if fully
utilized.
Droop:
Duty cycle:
Event Output:
Guarded Access:
HALT condition:
Hysteresis:
Hunting:
Input:
Integral:
Isolation:
Manual reset:
Monitor Data Mode:
off set:
ON/OFF control:
Open loop:
output:
Same as “rate.” Anticipatory action that senses the rate of change of
temperature, and compensates to minimize overshoot.
The difference between the value of the controlled variable and the value at
which it is being controlled.
Difference in temperature between set point and stabilized process
temperature.
Percentage of “load ON time” relative to total cycle time.
A programmable, ON/OFF output used for triggering peripheral devices or
processes from a specific Series 1500 program step. When events for a step
are unprogrammed, they retain the ON/OFF status from the last programmed
step.
(GA) -A set of Series 1500 parameters in the CHG PARA (change parameter)
mode which are “guarded” by access codes. The GA parameters include alarm
types, PID parameters, dead band, cycle times, calibration offset, recycle
option, 2-channel temperature control, device address, and the front panel
bck.
Indicated by a steadily ON “PROG HALT” LED caused by a RUN/HALT key
press during a running program, or by the program reaching a “Blank”
(unprogrammed) step.” See “Remote-Hold”.
In ON/OFF control, the temperature change necessary to re-energize the
output after it was de-energized at set point.
Oscillation of process temperature above and below set point.
Process variable information being supplied to the instrument.
Same as “auto-reset” and “reset.”
Electrical separation of functional circuits, such as the sensor circuit, or the data
communications circuits, from control power sources and ground.
Manual adjustment made to provide coincidence between set point and
process temperature, thereby eliminating droop.
(MTR DATA) - Examines the currently running step information.
A value added to or subtracted from the input signal.
Control of temperature about a set point by turning the output full ON or full
OFF at set point.
Control system with no sensoryfeedback-
A signal or value going out from a control.
86 WATLOW Series 1500 User's Manual
Gtossary, Appendix