Heating System User's Manual

Watlow Series 93 Keys and Displays ■ 3.1
Keys and Displays
Figure 3.1 - Series 93 Keys and Displays.
After 60 seconds with no key presses, the controller reverts to the default display —
the process value in the upper display and the set point in the lower display.
3
How to Use the Key and Displays
Lower Display: Indicates
the set point, output value,
parameters for data in the
upper display, or error and
alarm codes.
• To set to blank: set
[`dSP] to [`Pro] in the
Setup Menu.
Infinity Key
• Press once to clear any
latched alarms. It also
disables the deviation alarm
output if silencing is enabled.
• Press again within five
seconds to change from Auto
to Manual or vice versa. While
in Manual mode, percent
power is in the lower display.
% Percent Power Indicator
Light
• Lit: the controller is in Manual
operation. Press the ˆInfinity
key twice to enter Automatic
operation.
• Blinking: press the ˆInfinity
key to toggle between Auto and
Manual. Returns to its previous
state and stops blinking if the
ˆInfinity key is not pressed
within five seconds.
Output 1 Indicator Light: Lit
when Output 1 is energized.
Upper Display: Indicates
the process value, actual
temperature, operating
parameter values or an open
sensor. When powering up,
the Process display will be
blank for five seconds.
• To set to blank: set [`dSP]
to [`SEt] in the Setup
Menu.
Advance Key: Press to
step through the
Operations, Setup and
Calibration Menus.
In the Auto mode, new
data is self-entering in five
seconds.
93
Output 2 Indicator Light: Lit
when Output 2 is active. This
output can be configured as
a control or alarm output.
Up-arrow and Down-
arrow Keys: Increases or
decreases the value of the
displayed parameter.
• Press lightly to increase
or decrease the value by
one.
• Press and hold down to
increase or decrease the
displayed value at a rapid
rate. New data will self-
enter in five seconds, or
can be entered by
pressing the Advance
Key.
• Press both
simultaneously for three
seconds to enter the
Setup Menu. The [`LOC]
parameter appears.
• Continue pressing both
keys to enter the
Calibration Menu.