Filter
Top Products
OTC25 N
Operation
The Calibration High
and Calibration Low
selections are accessi-
ble only when the
calibration jumper is
installed as instructed
on page 10 (Figure 6).
OTC25 N On/Off Temperature Controller
Normal Operation
The factory default display setting of the OTC25 N is for Actual
Temperature . The default display may be changed to
setpoint temperature by selecting Setpoint at the Default
Display parameter selection. When the Default Display is
changed to Setpoint, the setpoint temperature may be adjusted
by using the Raise or Lower keys. The setpoint is
adjustable from 32 to 905° F (0 to 485° C).
When the Default Display setting is “Actual” , adjustment
of the Setpoint may only be accomplished by pressing the
Parameter Key momentarily to switch the display to Setpoint,
and then using the Raise or Lower Keys
to change the Setpoint Value. The display will automatically
revert back to “Actual” five seconds after the last keypress.
Parameter Configuration
Your OTC25 N controller’s parameter selections are explained
on the next page, with default settings shown in Figure 5a.
°
ACTUAL
SETPOINT
HEAT
Parameter Key
Used to access available parameters to set or change values.
Raise Key
Used to scroll up through available parameter settings or to
increase values. (Hold for fast-step progression)
Lower Key
Used to scroll down through available parameter settings or
to decrease values. (Hold for fast-step progression)
Discrete LED Indicators
OTC25 N OTC25 L OTC25 P
Actual: amber Actual: amber Actual: amber
Setpoint: amber Setpoint: amber Setpoint: amber
Heat: orange Limit: orange Output 1: orange
Output 2: orange
Operation
Three-Digit
LED Display
Displays measured
temperature, setpoint,
or parameter labels
and settings.
Figure 4. Front Panel Controls and Indicators
4