Watlow Optimizing Your Process System with the Series 988 Controller - Manual (Page 53)

Specifications
Optimizing Your Process System with the WATLOW Series 988
6.5
TL W WA
PROCESS
L1 L2 L3 L4
DEV
% OUT
DISPLAY
SERIES 988
MODE
AUTO
MAN
Displays and Keys Chart
AUTO/MAN Key
Clears or silences alarms
with one press, or toggles
between Auto and
Manual control with two
presses.
AUTO/MAN LED
Indicates Manual control;
or, when blinking,
indicates that another
press will toggle control
state.
MODE Key
Steps through the
menus. In Auto control,
enters data selected less
than five seconds previ-
ously.
MODE + Incr. Combination
Press to move backwards
through prompts in a menu.
Press and hold the MODE
key and use the increment
key to move backwards until
you reach the top of the
menu.
DISPLAY Key
Takes the control "home"
to the Display Loop
(current process values
and set point informa-
tion) from any menu
location.
L1, L2, L3, L4 LEDs
Shows the active
output(s).
Lower Display
Reads Display Loop
information, menu or
prompt names, or alarm
codes — red or green
hardware.
Increment (up-arrow) Key
Increases the value or
changes the selection in
the upper display.
Incr. + Decr. Combination
Press for three seconds to
reach the Setup menu;
press for three more
seconds to reach the
Calibration menu.
% OUT (percent output)
LED
Indicates that the lower
display now reads the
percent-output value.
DEV (Deviation) LED
Indicates that the lower
display now reads a
deviation-from-the-set-
point value.
Upper Display
Reads actual process
value or operating
paramenter value or error
code — red or green.
Decrement (down-arrow) Key
Decreases the value or
changes the selection in the
upper display.