Watlow Series 920 Microprocessor-Based Ramping Control User Manual
Page 70
HOUR:
Hysteresis:
Hunting:
IN:
Input:
Integral:
Isolation:
JC:
JS:
JUMPLOOP:
L A T :
LINK:
LOCK:
LOPWR:
The HOUR parameter has three meanings, depending upon
which menu you are in.
PROGRAM menu - The number of hours, in combination with
the MIN and SEC parameters, that equal the total step time to
achieve the temperature.
Under the AUTOSTART step type, the hours that the 920 will
wait for the time-of-day clock before AUTOSTART takes place.
SETUP menu - Represents the SYSTEM 24 hour time-of-day
clock. Midnight = 0 hours.
In ON/OFF control, the temperature change necessary to
change the output from full ON to full OFF.
Oscillation or fluctuation of process temperatures between set
point and process variable.
Represents the input parameter. Selects the type of sensor
used as an input. Will not appear if DIP switch #7 is ON.
Process variable information being supplied to the instrument.
Control action that automatically eliminates offset, or “droop”,
between set point and actual process temperature. Also
“reset”.
Electrical separation of sensor from high voltage circuitry.
Allows for application of grounded or ungrounded sensing
element.
The Jump Count parameter represents the number of times
that the Series 920 will jump to a specified step.
The Jump Step parameter of the Series 920 will jump to any
step within your current file. You cannot Jump Step to another
step in another file.
One of six step types under the PROGRAM menu of the Series
920, that can be programmed as a step or a file. You can jump
from one step to another within a file.
Latches your alarm outputs when the Series 920 has an alarm
condition. Remain energized until you manually clear any
alarms. Will not appear if DIP switch #7 is ON.
One of six step types under the PROGRAM menu of the Series
920, that allows you to link one file to another.
Allows for specific groups of parameters to be unaffected by
the UP/DOWN and ENTER keys, preventing these parameters
from being changed accidentally. 0 = No lock, full access of all
parameters. 1 = Prevents user from editing all parameters
except the SYSTEM parameter group, the LOCK parameter,
and the STEP parameter in the PROGRAM group. 2 =
Prevents user from editing all parameters except ER1 , ER2,
ALRM in the SYSTEM menu, the LOCK parameter, and the
STEP parameter in the PROGRAM menu.
Selects the minimum percent of power that the Series 920 will
output.
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WATLOW Series 920 User’s Manual