Athena Technologies Weather Radio L User Manual

SERIES  
OTC25 N/L/P  
DIGITAL TEMPERATURE  
CONTROLLERS  
Instruction  
Manual  
 
Table of  
Contents  
Installation  
1
1
Mounting  
Wiring  
2
Operation  
2
4
OTC25 N On/Off Controller  
OTC25 L Limit Controller  
OTC25 P PID Controller  
5
7
Calibration  
10  
11  
11  
12  
14  
Error Codes  
IEC Requirements  
Warranty/Repair Information  
Technical Specifications  
 
Installation  
Pre-Installation Instructions  
1. Inspect shipping carton for obvious signs of mishandling.  
2. After removing the controller from the shipping carton,  
inspect it carefully for damage. Never attempt to install and  
use a damaged unit.  
3. Verify that the ordering code number indicated on the side of  
the controller matches what was ordered.  
3.780”  
3.5”  
(88.9mm)  
0.25”  
(96mm)  
(6.35mm)  
°F  
3.780
(96mm)  
ACTUAL  
SETPOINT  
01  
02  
Figure 1. Case Dimensions  
Prior to mounting the OTC25 in your panel, make sure  
that the cutout opening is of the right size, 3.622" x 3.622"  
(92 mm x 92 mm), and deburred to enable a smooth fit.  
A minimum of 5.0" (127.0 mm) of depth behind the panel  
is required.  
Mounting  
Figure 2. Mounting Diagram  
3.5”  
(88.9mm)  
(
3.780”  
0.25”  
(96mm)  
(6.35mm)  
3.780”  
(96mm)  
MOUNTING  
SCREWS  
ACTUAL  
SETPOINT  
HEAT  
GASKET  
BRACKET  
PANEL  
Before installing OTC25, ensure gasket seats evenly  
around edges of unit and that there are no breaks or tears  
in the gasket.  
Insert the OTC25 through the front panel cutout, slide  
mounting “U” bracket around unit and secure it with the  
screws provided.  
Gasket should be evenly compressed around all sides to  
provide liquid-tight mounting.  
1
 
Wiring  
IMPORTANT: All electrical wiring connections should be made  
only by trained personnel using Class 1 wiring, and in strict  
accordance with the National Electrical Code and local regula-  
tions. Both of the incoming power lines should be fused with  
2AG, 0.5 A maximum rated fuses.  
The OTC25 controller has built-in circuitry to reduce the effects  
of electrical noise (RFI) from various sources;  
however, power and signal wires should always be kept  
separate. We recommend separating wires into one bundle for  
power (from line power and output) and one bundle for signal  
(from thermocouple).  
The OTC25 power supply accepts 100 through 250 Vac and 120  
through 250 Vdc line power without any switch settings or  
polarity considerations.  
COM.  
OUTPUT #2  
N.O.  
COM.  
OUTPUT #1  
N.O.  
L2  
(-)  
T/C  
(+)  
L1  
Figure 3. Wiring Connections  
Operation  
Athena Series OTC25 Digital  
Temperature Controller  
Just a few easy steps are required before your OTC25  
can be placed into service. After completing the mounting  
and wiring procedures as previously instructed, set each  
controller parameter using the simple front-panel keys  
as instructed.  
Power On  
When power is first applied to the OTC25, all segments  
of the LED display, as well as the discrete indicators, will be  
momentarily illuminated while the instrument goes through a  
series of diagnostic checks to verify proper operation of the unit.  
A software version will then be displayed, e.g.,  
. The last  
two digits of this code indicate the software revision supplied  
with your controller. Please provide this revision number when  
contacting us regarding your unit. This display is followed by a  
mnemonic code representing the OTC25 model type.  
2
 
To enter the configuration menu, press and hold the Parameter  
key for 10 seconds until the display changes to the parameter  
mode. Press the Parameter key again to index through the avail-  
able parameters. Pressing the Parameter Key for 3 seconds or  
allowing 60 seconds of inactivity will cause the OTC25 N to exit the  
menu system and return to normal operating mode.  
OTC25 N  
Operation  
Parameter Range Range Display Options Default Default  
°F  
°C  
°F  
°C  
Default  
Display  
Control  
Hysteresis  
2 to  
252  
1 to  
140  
Display  
Offset  
-126 to -70 to  
126 70  
Deviation  
OFF, 1 OFF, 1  
Band Alarm to 252 to 140  
Display  
Units  
Low  
Fixed  
Fixed  
Fixed  
Fixed  
Calibration  
High  
Calibration  
Figure 5a. Series OTC25 N Parameters and Default Settings  
Parameter Descriptions  
Default Display  
This parameter determines whether the OTC25 N’s display shows the  
Setpoint or the actual temperature by default. Regardless of the selection  
made here, the operator can observe the other value by momentarily  
pressing the Parameter  
Key. This will cause the alternate value to be  
displayed for five seconds.  
Control Hysteresis  
Control Hysteresis is adjustable between 2 and 252° F (1 to 140° C ). This  
parameter is used by the control algorithm to prevent rapid cycling of the  
output around Setpoint. The default value is 4° F (2° C). This means the  
heat will turn OFF when the Actual Temperature exceeds the Setpoint by 2°  
F (1° C). Conversely, the heater will not turn ON until the Actual  
Temperature drops 2° F (1° C) below the Setpoint.  
Display Offset  
Display Offset is adjustable from -126 to 126° F (-70 to 70° C). It can be  
used to provide limited adjustment of the displayed temperature as a com-  
pensation for offsets between the true temperature and the temperature  
seen by the thermocouple.  
3
 
Operation  
°
Three-Digit  
LED Display  
Displays measured  
temperature, setpoint,  
or parameter labels  
and settings.  
ACTUAL  
SETPOINT  
HEAT  
Figure 4. Front Panel Controls and Indicators  
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  
Setpoint: amber  
Heat: orange  
Actual: amber  
Setpoint: amber  
Limit: orange  
Actual: amber  
Setpoint: amber  
Output 1: orange  
Output 2: orange  
OTC25 N  
Operation  
OTC25 N On/Off Temperature Controller  
The Calibration High  
and Calibration Low  
selections are accessi-  
ble only when the  
calibration jumper is  
installed as instructed  
on page 10 (Figure 6).  
Normal Operation  
The factory default display setting of the OTC25 N is for Actual  
Temperature  
setpoint temperature by selecting Setpoint  
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  
. The default display may be changed to  
at the Default  
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.  
4
 
OTC25 N  
Operation  
Deviation Band Alarm  
A Deviation Band is a pre-set number of degrees, plus and  
+
minus, around the Setpoint Value, ex. 10° F. A Deviation  
Band Alarm provides an indication to the operator that the Actual  
Temperature has either exceeded or dropped below the chosen  
deviation. This parameter can be turned off  
or adjusted  
from 1 to 252° F (1 to 140° C). When the process variable is out-  
side the deviation band, the alarm is indicated by flashing the  
display (regardless of whether setpoint or actual temperature is  
displayed) and the optional alarm output is activated.  
Display Units  
This allows the operator to have the display indicate either  
degrees Fahrenheit or degrees Celsius.  
OTC25 L  
Operation  
OTC25 L Limit Controller  
Normal Operation  
The factory default display setting of the OTC25 L is for Actual  
Temperature  
setpoint temperature by selecting Limit Setpoint  
Default Display parameter selection.  
When the Default Display is changed to Limit Setpoint, the limit  
setpoint temperature may be adjusted by using the Raise or  
Lower keys. The limit setpoint is adjustable from 32 to 905°  
. The default display may be changed to  
at the  
F (0 to 485° C).  
When the Default Display setting is “Actual”  
, adjustment  
of the Limit Setpoint may only be accomplished by pressing the  
Parameter Key momentarily to switch the display to Limit  
Setpoint, and then using the Raise or Lower Keys to  
change the Limit Setpoint Value. The display will automatically  
revert back to “Actual” five seconds after the last keypress.  
Parameter Configuration  
Your OTC25 L controller’s parameter selections are explained  
on the next page, with default settings shown in Figure 5b.  
To enter the configuration menu, press and hold the Parameter  
key  
for 10 seconds until the display changes to the parame-  
ter mode. Press the Parameter key again to index through the  
available parameters. Pressing the Parameter Key for 3 seconds  
or allowing 60 seconds of inactivity will cause the OTC25 L to  
exit the menu system and return to normal operating mode.  
5
 
OTC25 L  
Operation  
Parameter Range Range Display Options Default Default  
°F  
°C  
°F  
°C  
Default  
Display  
Limit  
Setpoint  
0 to  
905  
0 to  
485  
Operator  
Selectable  
Automatic  
Startup  
Reset  
Display  
Units  
Low  
Fixed  
Fixed  
Fixed  
Fixed  
Calibration  
High  
Calibration  
Figure 5b. Series OTC25 L Parameters and Default Settings  
Parameter Descriptions  
Default Display  
This parameter determines whether the OTC25 L’s display  
shows the Limit Setpoint or the actual temperature by  
default. Regardless of the selection made here, the operator  
can observe the other value by momentarily pressing the  
Parameter  
Key. This will cause the alternate value to  
be displayed for five seconds.  
Limit Setpoint  
The Limit Setpoint determines the temperature at which  
the limit output will become inactive, interrupting power to  
the process. It is operator-selectable from 32° to 905° F  
(0° to 485° C).  
Automatic Startup Reset  
The automatic startup reset feature allows the limit output to be  
automatically reset at startup or to be latched at startup. In the  
latter condition, the limit output will have to be manually reset  
before the limit output will be activated (relay closed allowing  
power to flow to process heaters or coolers)  
.
Display Units  
This allows the operator to have the display indicate either  
degrees Fahrenheit or degrees Celsius.  
6
 
OTC25 P  
Operation  
OTC25 P PID Temperature Controller  
Normal Operation  
The factory default display setting of the OTC25 P is for Actual  
Temperature  
setpoint temperature by selecting Setpoint  
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  
. The default display may be changed to  
at the Default  
adjustable from 0 to 999° F (-17 to 537° 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 P controller’s parameter selections are explained  
on the next page, with default settings shown in Figure 5c.  
To enter the configuration menu, press and hold the Parameter  
key  
for 10 seconds until the display changes to the parameter  
mode. Press the Parameter key again to index through the avail-  
able parameters. Pressing the Parameter Key for 3 seconds or  
allowing 60 seconds of inactivity will cause the OTC25 P to exit  
the menu system and return to normal operating mode.  
7
 
Parameter Range Range Display Options Default Default  
°F °C °F °C  
OTC25 P  
Operation  
Default  
Display  
Display  
Offset  
-126 to -70 to  
126  
70  
Proportional 1 to  
1 to  
552  
Operator  
Selectable  
Band  
995  
0 to  
250 sec.  
Rate  
0 to  
999 sec.  
Reset  
Heat Cycle  
Time  
0 to  
120 sec.  
Cool Cycle  
Time  
0 to  
120 sec.  
Deviation  
Band Alarm  
1 to  
252  
1 to  
140  
Operator  
Selectable  
Output 2  
Configuration  
Display  
Units  
Input  
Type  
Low  
Fixed  
Fixed  
Fixed  
Fixed  
Calibration  
High  
Calibration  
“J” TC  
“K” TC  
Figure 5c. Series OTC25 P Parameters and Default Settings  
Parameter Descriptions  
Default Display  
This parameter determines whether the OTC25 P’s display  
shows the Setpoint or the actual temperature by default.  
Regardless of the selection made here, the operator can  
observe the other value by momentarily pressing the  
Parameter  
Key. This will cause the alternate value to  
be displayed for five seconds.  
Display Offset  
Display Offset is adjustable from -126 to 126° F (-70 to 70° C).  
It can be used to provide limited adjustment of the displayed  
temperature as a compensation for offsets between the true  
temperature and the temperature seen by the thermocouple.  
8
 
OTC25 P  
Operation  
Proportional Band  
Proportional Band is a PID parameter that represents the amount of  
deviation of the controlled variable required to move through the full  
range, expressed in % of span or degrees of temperature. This para-  
meter can also be expressed as “Gain” (the wider the band, the lower  
the gain).  
Rate  
Rate is a PID parameter (Derivative Action) that produces a corrective  
signal proportional to the rate at which the controlled variable is  
changing. It is used to correct for overshoot and undershoot.  
Reset  
Reset is a PID parameter (Integral Action) that produces a corrective  
signal proportional to the length of time and magnitude that the con-  
trolled variable has been off setpoint. It is used to accommodate load  
changes.  
Heat Cycle Time  
Heat Cycle Time is displayed in seconds, and can be set from 0 to 120  
seconds. A setting of zero represents a heat cycle time of 300 mil-  
liseconds.  
Cool Cycle Time  
Cool Cycle Time is displayed in seconds, and can be set from 0 to 120  
seconds. A setting of zero represents a cool cycle time of 300 mil-  
liseconds. This menu parameter will only be displayed if output 2 is  
configured to be a cool output.  
Deviation Band Alarm  
A Deviation Band is a pre-set number of degrees, plus and minus,  
+
around the Setpoint Value, ex. 10° F. A Deviation Band Alarm provides  
an indication to the operator that the actual temperature has either  
exceeded or dropped below the chosen deviation. This parameter can  
be turned off  
or adjusted from 1 to 252° F (1 to 140° C). When  
the process variable is outside the deviation band, the alarm is indicat-  
ed by flashing the display (regardless of whether setpoint or actual  
temperature is displayed and activating an output, if configured as  
such).  
Output 2 Configuration  
Output 2 may be configured as either a control output or as an alarm  
output for the deviation band alarm. When configured for control, out-  
put 2 acts as a cool PID output. When configured for an alarm, output  
2 is activated when the deviation alarm is active and deactivated when  
the deviation alarm is inactive.  
Display Units  
This allows the operator to have the display indicate either degrees  
Fahrenheit or degrees Celsius.  
Input Type  
Sensor input type may be either a Type J or Type K thermocouple.  
9
 
Calibration  
Calibration  
,
The Calibration High  
and Calibration Low  
selections are accessi-  
ble only when the  
calibration jumper is  
installed (Figure 6).  
Calibration of the OTC25 controller requires the operator  
to apply two separate fixed and specific signals (Calibration  
Low and Calibration High) from a reference source  
(thermocouple calibrator) to the controller. The Raise  
Key “tells” the controller to read the applied signal and use  
it as a reference point.  
Figure 6. Location of Calibration Jumper.  
Calibration Procedure  
1. Prior to applying power to the unit, install the calibration  
jumper on the microprocessor board as shown in  
Figure 6.  
2. With the instrument still unpowered, connect a calibration  
reference source to the thermocouple input terminals on the  
OTC25.  
3. Apply power. Allow at least 15 minutes for the controller to  
warm up before continuing.  
4. Using the Parameter  
Key, index to the Calibration Low  
parameter. The display will alternately flash this  
mnemonic and the number “32” (“0” for Celsius units).  
5. Adjust the reference source to output a voltage equivalent to  
that generated by a “J” or “K” (OTC25 P) thermocouple at  
32° F (0° C). Allow reference to settle for 10 seconds before  
proceeding.  
6. Press the Raise key  
once to set this reference point. The  
display will stop flashing momentarily while the  
controller self-calibrates (approx. 3 seconds), and then  
resume flashing.  
7. Press the Parameter  
Key, index to the Calibration High  
10  
 
Calibration  
parameter. The display will alternately flash this  
mnemonic and the temperature value it expects to see.  
8. Adjust the reference source to output a voltage equivalent to  
that generated by a “J” or “K” (OTC25 P) thermocouple at  
the temperature flashing on the display. (Allow reference to  
settle for 10 seconds before proceeding.)  
9. Repeat Step 6 for this reference point.  
10. Press the Parameter  
Key for 10 seconds or allow  
60 seconds of inactivity.  
11. Adjust the reference source to output a voltage equivalent to  
that generated by a “J” or “K” (OTC25 P) thermocouple at  
32° F (0° C). Verify that (after settling), the OTC25  
indicates a measured temperature of 32° F (0° C).  
12. Repeat Step 11 for the upper reference point.  
Error Codes  
Display  
Problem  
Possible Solution  
Broken thermocouple  
lead wire or defective  
sensor.  
Verify wiring.  
Replace sensor.  
Input Signal is below  
calibration of unit.  
Verify Input Signal;  
check calibration.  
IEC  
Requirements  
USE OF THIS EQUIPMENT IN A MANNER NOT SPECIFIED BY  
THE MANUFACTURER MAY IMPAIR PROTECTION PROVIDED  
BY THE EQUIPMENT!  
The maximum supply current is line voltage dependent:  
60 mA for an 100-250 Vac input  
fuse rating: 2AG, 0.5 A  
Output Specifications  
Output 1 Type Max current  
Voltage  
400 Vpk  
380 V  
Leakage  
1 mA  
T (Triac)  
2 A  
5 A  
B (Relay)  
Output 2 Type Max current  
Voltage  
400 Vpk  
380 V  
Leakage  
1 mA  
T (SSR)  
0.5 A  
5 A  
B (Relay)  
CLEANING INSTRUCTIONS  
1. Remove power from the unit prior to any  
cleaning operation.  
2. Use a cotton cloth to gently and sparingly apply isopropyl  
alcohol only. Do not use cleaners or other solvents as they  
may damage the unit.  
11  
3. Allow the unit to dry completely prior to reapplying power.  
 
Warranty/Repair  
Information  
Two-Year Limited Warranty  
THIS EQUIPMENT IS WARRANTED TO BE FREE FROM DEFECTS  
OF MATERIAL AND WORKMANSHIP. IT IS SOLD SUBJECT TO  
OUR MUTUAL AGREEMENT THAT THE LIABILITY OF ATHENA  
CONTROLS, INCORPORATED IS TO REPLACE OR REPAIR THIS  
EQUIPMENT AT ITS FACTORY, PROVIDED THAT IT IS RETURNED  
WITH TRANSPORTATION PREPAID WITHIN TWO (2) YEARS OF  
ITS PURCHASE.  
THE PURCHASER AGREES THAT ATHENA CONTROLS, INCORPO-  
RATED ASSUMES NO LIABILITY UNDER ANY CIRCUMSTANCES  
FOR CONSEQUENTIAL DAMAGES RESULTING FROM ITS USE OR  
FROM IMPROPER HANDLING OR PACKAGING OF SHIPMENTS  
RETURNED TO THE FACTORY.  
COMPONENTS WHICH WEAR OR WHICH ARE DAMAGED BY MIS-  
USE ARE NOT WARRANTED. THESE INCLUDE CONTACT POINTS,  
FUSES, ELECTROMECHANICAL RELAYS, AND TRIACS. UNITS  
WHICH HAVE BEEN MODIFIED BY A CUSTOMER IN ANY WAY  
ARE NOT WARRANTED.  
Other than those expressly stated herein, THERE ARE NO OTHER  
WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, AND  
SPECIFICALLY EXCLUDED BUT NOT BY WAY OF LIMITATION, ARE  
THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR  
PURPOSE AND MERCHANTABILITY.  
IT IS UNDERSTOOD AND AGREED THE SELLER’S LIABILITY  
WHETHER IN CONTRACT, IN TORT, UNDER ANY WARRANTY, IN  
NEGLIGENCE OR OTHERWISE SHALL NOT EXCEED THE RETURN  
OF THE AMOUNT OF THE PURCHASE PRICE PAID BY THE PUR-  
CHASER AND UNDER NO CIRCUMSTANCES SHALL SELLER BE  
LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUEN-  
TIAL DAMAGES. THE PRICE STATED FOR THE EQUIPMENT IS A  
CONSIDERATION IN LIMITING SELLER’S LIABILITY. NO ACTION,  
REGARDLESS OF FORM, ARISING OUT OF THE TRANSACTIONS  
OF THIS AGREEMENT MAY BE BROUGHT BY PURCHASER MORE  
THAN ONE YEAR AFTER THE CAUSE OF ACTION HAS ACCRUED.  
SELLER’S MAXIMUM LIABILITY SHALL NOT EXCEED AND  
BUYER’S REMEDY IS LIMITED TO EITHER (i) REPAIR OR  
REPLACEMENT OF THE DEFECTIVE PART OR PRODUCT, OR AT  
SELLER’S OPTION (ii) RETURN OF THE PRODUCT AND REFUND  
OF THE PURCHASE PRICE, AND SUCH REMEDY SHALL BE  
BUYER’S ENTIRE AND EXCLUSIVE REMEDY.  
THE SPECIFICATIONS PUT FORTH IN THIS MANUAL ARE SUB-  
JECT TO CHANGE WITHOUT NOTICE.  
12  
 
Warranty/Repair  
Information  
Unit Repairs  
It is recommended that units requiring service be returned to an  
authorized service center. Before a controller is returned for ser-  
vice, please consult the service center nearest you. In many  
cases, the problem can be cleared up over the telephone. When  
the unit needs to be returned, the service center will ask for a  
detailed explanation of problems encountered and a Purchase  
Order to cover any charge. This information should also be put  
in the box with the unit. This should expedite return of the unit  
to you.  
This document is based on information available at the time of  
its publication. While efforts have been made to render accuracy  
to its content, the information contained herein does not purport  
to cover all details or variations in hardware, nor to provide for  
every possible contingency in connection with the installation  
and maintenance. Features may be described herein which are  
not present in all hardware. Athena Controls assumes no obliga-  
tion of notice to holders of this document with respect to  
changes subsequently made.  
Proprietary information of Athena Controls, Inc. is furnished for  
customer use only. No other use is authorized without the writ-  
ten permission of Athena Controls, Inc.  
13  
 
Technical  
Specifications  
Operating Limits  
Ambient Temperature  
Relative Humidity  
Tolerance  
32° F to 140° F (0° C to 60° C)  
20% to 95%, Non-Condensing  
85 to 250 V 10%, 50/60 Hz  
(Single-Phase) 120 to 250 Vdc  
Power  
Sensor Range  
Type J Thermocouple  
OTC25 N/L: 6 to 926° F  
(-14 to 496° C)  
OTC25 P: 32 to 999° F  
(0 to 537° C)  
OTC25 P: 0 to 999° F  
(-17 to 537° C)  
Type K Thermocouple  
Performance  
Accuracy  
0.3% of Full Scale  
( 0.10% Typical), 1 Digit  
1° F/C  
Setpoint Resolution  
Repeatability  
1 Count  
Temperature Stability  
TC Cold-End Tracking  
Noise Rejection  
5 µV /° C (Maximum)  
0.05° C /° C Ambient  
100 dB Common Mode,  
70 dB Series Mode  
3.7 Hz (270 ms)  
Temperature Sampling  
Control Characteristics  
Control Hysteresis  
Display Offset  
2 to 252° F (1 to 140° C)  
-126 to 126° F (-70 to 70° C)  
Mechanical Characteristics  
Display  
7-segment LED,  
alphanumeric: 3 digits  
0.56" (14.22 mm)  
Orange  
Display Height  
Color  
Front-Panel Cutout  
3.622" x 3.622"  
(92 mm x 92 mm)  
Bezel Outside Dimensions 3.780" x 3.780"  
(96 mm x 96 mm)  
Bezel Height  
Case Depth  
Weight  
Connections  
Contacts  
0.250" (6.35 mm)  
3.515" (89.28 mm)  
< 15 oz (425 g)  
7
“Fast-On” .250” (6.35 mm)  
14  
 
Technical  
Specifications  
Input Source (Temperature Sensor)  
Thermocouple Range:  
Type J  
OTC25 N/L:  
6 to 926° F  
(-14 to 496° C)  
32 to 999° F  
(0 to 537° C)  
N/A  
0 to 999° F  
(-17 to 537° C)  
OTC25 P:  
Type K  
OTC25 N/L:  
OTC25 P:  
Output Source (Power to Heater)  
Solid-State Relay (Output 1) 120/250 Vac, Zero-Voltage  
Switched, 2 A Continuous/  
10 A Surge @ 25° C  
Solid-State Relay (Output 2) 120/250 Vac, Zero-Voltage  
Switched, 0.5 A Continuous/  
10 A Surge @ 25° C  
Electromechanical Relay  
5 A, 250 Vac/5 A, 30 Vdc  
Max Switching Capacity,  
150 W  
15  
 
NOTES  
16  
 
Keep This Information in a Safe Place  
Configured Parameters Reference Information  
Series OTC25 Temperature Controller  
Model Number:  
Zone Location:  
Firmware Version No. :  
_____________________  
_____________________  
_______________  
(Displayed when the controller is powered up after all the segments on both lines  
of the display have been tested).  
Dear Customer:  
Please keep this information handy - in case your controller should lose its configured initial parameter values or for easy refer-  
ence when setting up a new controller. After auto-tuning, and when your controller is controlling well, we suggest you write the  
displayed value for each of the menu parameters listed below. If you do not use a listed parameter, indicate “N/A”. Using this  
page to document your parameter settings could reduce your downtime.  
If you have any questions, or need further assistance, please contact Athena Controls Technical Support:  
Toll-free (in U.S.): 800.782.6776  
Telephone: 610.828.2490  
Fax: 610.828.7084  
OTC25-N  
OTC25-P  
OTC25-L  
17  
 
NOTES  
18  
 
Keep This Information in a Safe Place  
Configured Parameters Reference Information  
Series OTC25 Temperature Controller  
Model Number:  
Zone Location:  
Firmware Version No. :  
_____________________  
_____________________  
_______________  
(Displayed when the controller is powered up after all the segments on both lines  
of the display have been tested).  
Dear Customer:  
Please keep this information handy - in case your controller should lose its configured initial parameter values or for easy refer-  
ence when setting up a new controller. After auto-tuning, and when your controller is controlling well, we suggest you write the  
displayed value for each of the menu parameters listed below. If you do not use a listed parameter, indicate “N/A”. Using this  
page to document your parameter settings could reduce your downtime.  
If you have any questions, or need further assistance, please contact Athena Controls Technical Support:  
Toll-free (in U.S.): 800.782.6776  
Telephone: 610.828.2490  
Fax: 610.828.7084  
OTC25-N  
OTC25-P  
OTC25-L  
19  
 
NOTES  
20  
 
For technical assistance, call toll free  
1-800-782-6776 (in the U.S.) or 610-828-  
2490 (from anywhere in the world), or  
Athena Controls, Inc.  
5145 Campus Drive  
Plymouth Meeting, PA 19462 USA  
Toll-free: 800.782.6776  
Tel: 610.828.2490  
Fax: 610.828.7084  
athenacontrols.com  
900M015U00 REV “B” - 082504  
 

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