User`s manual
Watlow EZ-ZONE™ RUI/Gateway • 8 • Chapter 3 Keys and Displays
Infinity Key ˆ
In the Home Page, press
to scroll through the net-
work zones.
In other prompts, press
to back up one level, or
press and hold for three
seconds to return to the
Home Page.
Advance Key ‰
Advances through pa-
rameter prompts.
Upper Display:
In the Home Page, displays the
process value, otherwise dis-
plays the value of the param-
eter in the lower display.
Zone Display:
Indicates the controller zone
that the remote user interface
(RUI) is currently communi-
cating with.
1 to 9 = zones 1 to 9
A = zone 10 E = zone 14
b = zone 11 F = zone 15
C = zone 12 H = zone 16
d = zone 13
Lower Display:
Indicates the set point or out-
put power value during opera-
tion, or the parameter whose
value appears in the upper
display.
EZ Key:
This key can be programmed
to do various tasks, such as
starting a profile.
Temperature Units Indica-
tor Lights:
Indicates whether the tem-
perature is displayed in Fahr-
enheit or Celsius.
Output Activity:
Number lights indicate output
activity.
Percent Units Indicator
Lights when the controller is
displaying values as a percent-
age.
Profile Activity;
Lights when a profile is run-
ning. Flashes when a profile is
paused.
Communications Activity
Flashes when the RUI is com-
municating with a controller.
Up and Down Keys ¿ ¯
In the Home Page, adjusts the
set point in the lower display.
In other pages, changes the up-
per display to a higher or lower
value, or changes a parameter
selection.
To Clear an Alarm
If the alarm condition has ended, from the Home Page,
press the Advance Key ‰. If there are any active mes-
sages, [ignr] will appear in the upper display and
the alarm instance will appear in the lower display.
Use the Down Arrow Key ¯ to scroll through the mes-
sages and the Up Arrow Key ¿ to clear the alarm.
Error and Alarm Messages
[Attn] will appear in the lower display with the error
message in the upper display.
[ Er;i1] Error Input 1
[Er;i2] Error Input 2
[AL`1] Alarm 1 (For alarm details, query
[AL`2] Alarm 2 the alarm settings.)
[AL`3] Alarm 3
[AL`4] Alarm 4
[LiM] Limit
[tUnE] Tuning
[``rP] Ramping
[d;Err] Device Error
[`C;Er] Current Error
[`h;Er] Heater Error
[uAL;h] Value too large to be displayed (≥ 10000.0)
[uAL;L] Value too small to be displayed (≤ -2000.0)
No Device Connected
If no device is connected to the RUI or the controller
on the selected zone is disconnected, [``no] will ap-
pear in the upper display and [`deu] will appear in
the lower display. Press the Infinity Key ˆ to move to
the next zone.
If a zone disappears, check network wiring.
Chapter 3: Keys and Displays
3