Watlow EZ-ZONE
®
ST
•
5
•
Chapter 1 Overview
Getting Started Quickly
The ST control has a page and menu structure that is
listed below along with a brief description of its pur-
pose.
Setup Page
Push and hold the up
and down keys (
¿ ¯
)
for 6 seconds to enter.
(See the
further information)
Once received, a user
would want to setup
their control prior to op-
eration. As an example,
define the input type
and set the output cycle
time.
Operations Page
Push and hold the up
and down keys (
¿ ¯
)
for 3 seconds to enter.
(See the
mation)
After setting up the con-
trol to reflect your equip-
ment, the Operations
Page would be used
to monitor or change
runtime settings. As an
example, the user may
want to see how much
time is left in a profile
step or perhaps change
the autotune set point.
Factory Page
Push and hold the In-
finity and the green
Advance keys (
ˆ
‰
) for
6 seconds to enter. (See
the
ther information)
For the most part the
Factory Page has no
bearing on the control
when running. Here, a
user may want to enable
password protection,
view the control part
number or perhaps cre-
ate a custom Home Page.
Profile Page
Push and hold the the
green Advance key
‰
for
6 seconds to enter. (See
the
for fur-
ther information)
If equipped with this
feature, a user would
want to go here to con-
figure a profile.
The default ST loop configuration out of the box is
shown below:
• Analog Input functions set to thermocouple, type J
• Heat algorithm set for PID, Cool set to off
• Output 1 set to Heat
• Control mode set to Auto
• Set point set to 75 °F
If you are using the input type shown above, simply
connect your input and output devices to the control.
Power up the control and push the up arrow
¿
on
the face of the control to change the set point from
the default value of 75 °F to the desired value. As the
Set Point increases above the Process Value, output 1
will come on and it will now begin driving your output
device.
Note:
The output cycle time will have a bearing on the
life of mechanical relay outputs and can be differ-
ent based on the type of output ordered. The output
cycle time can be changed in the Setup Page under
the Output Menu.
EZ-ZONE ST Default Configuration
Thermocouple Type J
Analog Input 1
PID
Controller
Heat
Loop 1
Input Sensor
Heat
Output
Function
Input
Function
Output 1
