Watlow Series 945, 1/4 DIN Microprocessor-BasedAuto-tuning Control - Manual (Page 12)

Keys and Displays, Chapter 3
12
WATLOW Series 945 User's Manual
Keys/Displays
After 1 minute with no key activations, the control reverts to the process value in the
upper display and the set point in the lower display.
Chapter 3
How to Use the Keys and Displays
Figure 28 -
Series 945
Keys and Displays.
A1 & A2
When lit, these LEDs tell you
when Alarms 1 or 2 are active.
Only appears on those units
with alarms option. L 1 & L2
When lit, these LED's
tell you when Output 1
or Output 2 is ener-
gized. L2 only appears
if your unit has the #2
output hardware.
Upper Display
Red, 0.56" (14 mm) high,
seven segment, four digit
LED display, indicating
either process actual
temperature, the operating
parameter values, or an
open sensor. When power-
ing up, the Process display
will be blank for 8 seconds. Lower Display
Red 0.56" (14 mm) high, seven
segment, four digit LED
display, indicating the set
point, operation parameters,
menu parameters, and error
or alarm codes.
Auto/Manual LED
Lit when the control is in
Manual operation. Press the
key twice to enter Auto opera-
tion. A blinking Auto/Manual
LED indicates that pressing
the AUTO/MAN key toggles
between Auto and Manual.
After 5 seconds without press-
ing the AUTO/MAN key, the
LED stops blinking, and re-
turns to its previous state.
AUTO/MAN Key
Pressed once, it clears any
latched alarms. If the key is
pressed again within 5
seconds, the control toggles
between the Auto and Manual
mode. While in the Manual
mode, percent power is always
displayed in the lower display. MODE Key
Steps the control
through the Operating
menu; also, in the Auto
mode, enters new data
selected.
Front Panel
Locking Screw
Secures or releases
the control chassis
from its case. UP/DOWN keys
When pressed simultaneously for 3 seconds, the
Setup Menu appears displaying the LOC
parameter. At the LOC parameter, continue to
press the UP/DOWN keys simultaneously , and
the Calibration Menu will appear.
UP Key
Increases the value of
the displayed parame-
ter. A single touch in-
creases the value by
one. Hold the key
down to increase the
value at a rapid rate.
New data is self enter-
ing in 5 seconds. DOWN Key
Decreases the value of
the displayed parame-
ter. A single touch de-
creases the value by
one. Hold the key down
to decrease the value
at a rapid rate. New
data is self entering in 5
seconds.