SERIES
16C
TEMPERATURE/PROCESS
CONTROLLER
Instruction Manual
(Basic Operations)
1
3
Introduction
Precautions
Features
Congratulations on your purchase of an Athena Series 16C
Temperature/Process Controller. It is designed for ease of
use and reliability wherever accurate control is required.
After following the instructions for installation, simply
step through and set your operating parameters using the
controller’s easy menu system. The instrument may then be
automatically or manually tuned to your process for optimum
setpoint control.
A Quick Setup Reference Card is on page 5 and also attached
as a tear-off card to the back of the instruction manual for
experienced users of PID controllers.
As you look through this manual, you will notice blue
italicized text appearing in the margins and adjacent to
operating information. These notes impart important information about the controller and may answer questions you may
have about its setup or operation. If you still have questions
or require any assistance, please contact your Athena representative or call technical support at 1-800-782-6776. Outside
the USA, please call 610-828-2490.
After unpacking, inspect the instrument for any physical
damage that may have occurred in shipping. Save all packing
materials and report any damage to the carrier immediately.
Field-Selectable Thermocouple, RTD, Current or Voltage Input
On/Off Through Full PID Operation
Autotuning - Heat or Cool
Eight-Segment Ramp/Soak
On/Off Output with Adjustable Hysteresis and Deadband
Dual Output Capability
Field-Configurable Process or Deviation Alarms
Bumpless, Auto-Manual Transfer
NEMA 4X Front Panel, “Watertight”
Dual 4-Digit (0.36”), 7-Segment Alphanumeric Display
Selectable Ramp to Setpoint
Alarm Inhibit
Loop Break Alarm Capability
Available Options Include Serial Communications, Contact/
Digital Input, Remote Analog Setpoint, Transducer Excitation,
Auxiliary Output, Dual Alarms, or Electromechanical Relay
Alarm.
Approvals: UL, cUL, CE
© Copyright 2004, Athena Controls, Inc.
Safety Warning
®
U
L
C
®
U
L
In addition to presenting a potential fire hazard, high
voltage and high temperature can damage equipment
and cause severe injury or death. When installing or using
this instrument, follow all instructions carefully and use
approved safety controls. Electrical connections and wiring
should be performed only by suitably trained personnel.
Do not locate this instrument where it is subject to excessive
shock, vibration, dirt, moisture, oil, or other liquids. The safe
operating temperature range for this unit is 32°F to 140°F
(0°C to 60°C).
This unit has been tested and found to be compliant with
“NEMA Type 4X Enclosure - For Indoor Use Only.” When
properly installed, this controller will maintain the integrity
of a NEMA enclosure and remain “Watertight.” This rating is
only applicable when the controller is properly installed into a
suitably rated NEMA Type 4X housing.
3
1
Table of
Contents
For information and
operating instructions
related to installed
options and digital
communications,
refer to the Series C
Options and Digital
Communications
manual supplied with
your controller.
4
Installation 1
Dimensions and Mounting 2
Wiring 3
Output Types 5
Operation 6
Front Panel Controls 6
Power On 7
Security Levels 8
Operating Modes 9
Menu System Overview 10
Initial Setup Sequence 12
Parameter/Menu Descriptions 14
Input Menu 15
Temperature Input 16
Process (Linear) Input 16
Display Menu 17
Output Menu 17
PID Output and Control Menus 18
On/Off Output and Control Menus 19
Alarm Outputs 20
Autotune Damping 22
Ramp and Soak Menu 23
Supervisor Menu 24
Calibration Menu 25
Options Menu 25
AutoTuning 26
Manual Tuning 28
Error Codes 29
Technical Specifications 30
Ordering Codes 32
Recalibration Procedures 33
Quick–Helps 34
Warranty/Repairs 36
Glossary 39
Installation
Measurements between
centerlines of panel cutouts are the minimum
recommended.
Unpacking and Inspection
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.
Figure 1.
Recommended Panel Layout for Multiple Controllers
C
L
2.850” (72.4 mm)
C
L
C
L
2.150” (54.6 mm)
C
L
1
3
Dimensions
2.100"
(53.3m m)
O1
O2
A1
A2
F1
F2
PV
SV
2.100"
(53.3m m)
4.654"
(118.21mm )
3.937"
(100 m m)
0.717"
(8.21 mm)
1.750"
(44.5 mm)
Figure 2. Case Dimensions
Prior to mounting the Series C in your panel, make sure that
the cutout opening is of the right size, 1.771” x 1.771” (45
mm x 45 mm), and deburred to enable a smooth fit. A minimum of 4” (100 mm) of depth behind the panel is required.
Mounting
When properly
installed through
a NEMA enclosure,
the integrity of the
enclosure will be
maintained and will
remain “Watertight.”
2
Figure 3. Series C Mechanical Components
Insert the Series C through the front panel cutout and slide
the mounting collar back onto the unit from behind the
panel. Push the mounting collar up tight to the back of the
mounting panel.
Bezel
Grips
Gasket
Case Clip
Customer Panel
Wiring
1
2
3
4
5
6
7
8
9
10
13
14
11
12
N.O.
C
N.C.
N.O.
C
SENSOR
INPUT
T/C
OUTPUT 1
OUTPUT 2
RT
D
L1 L2
100 - 250 V 50/60 Hz
100 - 250 Vdc (Auto Polarity)
24 Vac/Vdc (Auto Polarity)
A2
232/485
GND
ALARM
&
COMM.
COM
N.O.
N.O.
RCV
B (-)
COM
XMT
A (+)
A1
RS 232
RS 485
ALARM & COMM.
IMPORTANT: All electrical wiring connections should be made
only by trained personnel, and in strict accordance with the
National Electrical Code and local regulations.
The Series C 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 connecting wires into
bundles: power; signal; alarms; and outputs. These bundles
should then be routed through individual conduits. Shielded
sensor cables should always be terminated at one end only.
If additional RFI attenuation is required, noise suppression
devices such as an R.C. snubber at the external noise source
may be used. If you wish, you may order this suppressor
directly from Athena, part number 235Z005U01.
Figure 4. Contact Identification
3
Wiring
8
9
10
RTD
8
9
10
T/C
3
4
5
8
9
10
11
12
L1 L2
Thermocouple circuit
resistance should not
exceed 100 ohms for
rated accuracy; errors
will occur at higher
resistance values.
If shielded thermocouple wire is used,
terminate the shield
only at one end.
Wiring
Figure 5. Thermocouple Input Wiring
Make sure that you are using
the appropriate thermocouple
and extension wire. Connect the
negative lead (generally colored
red in ISA-type thermocouples)
to contact #9; connect the
positive lead to contact #10.
Extension wires must be the
same polarity as the thermocouple.
Figure 6. RTD Wiring
The Series C accepts input from
2- or 3-wire, 100 ohm platinum
resistance temperature detectors
(RTDs). Connect 2-wire RTDs
to contacts #9 and #10, with a
jumper across contacts #8 and
#10. Keep leads short and use
heavy gauge copper extension
wire, if necessary, to minimize
Note: For 2-Wire RTD
lead resistance. For long runs,
3-wire RTDs should be used.
Figure 7. Process and Linear Input Wiring
Voltage Inputs: Connect the positive
voltage input to contact #10; the
negative input to contact #9.
Current Inputs: Connect the positive
current input to contact #10; the
negative input to contact #9.
Jumper 8 & 10
The Series C power supply accepts
100 to 250 Vac and 100
to 250 Vdc line power without any switch settings or
polarity considerations. All connections should be made
in accordance with the National Electrical Code and local
regulations, using only NEC Class 1 wiring for all power
terminals.
It is advisable, but not necessary, to fuse one leg of the
incoming power line, contact #11, with a 2AG, 0.5 amp
rated fuse. It is recommended that instrument power and load
power be fused independently.
Figure 8. Power Wiring Connection
4
100 - 250 V 50/60 Hz
100 - 250 Vdc (Auto Polarity)
Output Types
The Type “B” output
is a mechanical device
and subject to wear.
To extend the life of
the relay, set the Cycle
Time for the relay
output to the longest
duration that still
affords good control.
When you ordered your Series C controller specific output
types were specified, designated as “B”, “E”, “F”, “G”, “S”,
“T” or “Y”. You also had the option of configuring your controller with either one or two output actions. The numbers
below are suggested for most typical applications.
For Control Output Type — Select Cycle Time
(in seconds)
B >15
E 0.2
F 0.2
G 0.2
S 0.2
T 15*
Y >15
* “T” outputs directly driving non-inductive loads (small heaters) can have
cycle times as low as 0.2 seconds.
Output Type Description
B 5 A (120/240 Vac) relay, normally open, used
for switching resistive loads. If relays or solenoids are to be driven, select the “T” output. If
a “B” output is selected, order snubber network
235Z005U01.
E 0-20 mA
F 4-20 mA, full output to load with 500 ohm
impedance max. (suppressed).
G High impedance ‘F’ (800 ohms).
S 20 Vdc pulsed output for solid-state relays.
T 1 A @ 120/240 Vac, solid-state relay, zero volt-
age-switched and optically isolated from drive
signal. Only resistive loads to 1A may be controlled directly. Larger loads may be controlled
using an external contactor.
Y 5 A (120/240 Vac) relay, but normally
closed (output 2 only).
5
7
Operation
Figure 9. Front Panel Controls and Indicators
Mode/Enter Key
Used to enter Parameter selections,
access operating modes, release
latched alarms, and index through
menu items.
Lower Key
Used to decrease values.
(Hold for fast-step progression)
Raise Key
Used to increase values.
(Hold for fast-step progression)
Menu Access Key
Used to enter or exit the menu system, index to the next
menu, and enter the Security Level menu.
6
Power On
The Series C controller’s
functional hierarchy
is organized into three
distinct user-programmable groupings:
Security Level, Menu
System, and Operating
Mode.
When power is first applied to the Series C, all segments of
the LED displays will be momentarily illuminated while the
instrument goes through a series of diagnostic checks to
verify proper operation. A software version number will then
appear in the lower display, followed by a configuration code
(upper display) and the communications protocol which is
supported (lower display).
Please provide the
software version
number, communications
protocol, and the
controller’s full model
number, when contacting
us regarding your
controller.
IMPORTANT: On initial startup, there is a possibility that
outputs may be activated. We recommend placing the unit
in Standby mode until you have configured the controller
according to your application requirements. To place the
controller in Standby, follow this procedure:
1) Press and hold Mode/Enter key until
a menu label appears in upper display
(approximately three seconds).
2) Press Raise or Lower key until
appears in the lower display.
3) Press Mode/Enter key. (The upper display will
alternate between and process value.)
Operations Overview
The user interface of the Series C allows you to use menus to
set up the instrument, set the desired security level, change
the setpoint, and conveniently change operating modes.
Figure 9 on page 15 provides a functional representation of
the user interface and the key presses necessary to perform
the basic functions.
7
Security Levels
The controller’s initial
security level, set at the
factory, is Configuration
. When you have
completed configuring
the instrument, we
recommend the security
level be set to the most
restrictive level suitable
for your application.
The security level feature allows you to limit access to the
menus, setpoint, and operating mode selection according to
the needs of your application. The security levels provided
are Key Lockout, Setpoint, Setpoint plus Mode, User,
Configuration, and Factory. To view or change security
level from the Process Variable display, press and hold the
Menu Access key for approximately 10 seconds.
(Ignore the menu label that will appear in the upper display
after approximately three seconds.) The controller will display
(Access Level) and the current security level label,
e.g., . Use the Raise or Lower keys to index
through the security levels. Press the Mode/Enter key
once to select the new security level desired and return to the
Process Value display.
Security Levels and Access Restrictions
Key Lockout Highest security level. No access to any
Setpoint No access to menus. Only allows setpoint
Setpoint
plus Mode No access to menus. Only allows setpoint
User All “Setpoint” level privileges as well as
Configuration All “User” level privileges as well as Input,
Factory All “Configuration” level privileges as well
controller functions. To escape, follow
instructions above for changing security
levels.
value or output percentage (manual mode)
to be changed.
value, output percentage (manual mode),
or operating mode to be changed.
access to Operating Mode, Autotune, and
Control menus.
Output, Display, and Supervisor menus
as access to Calibration menu.
JMPØ3
NOTE: Removing this jumper on the microcontroller board disables
the keypad, thus preventing any operator access.
8
Operating Modes
Remember to press the
Mode/Enter key after
making your selection.
If both outputs are
set to or ,
the Series C will function as a non-controlling indicator. Control
outputs will be disabled
and the Operating
Modes will not be
displayed.
The Series C’s operating modes are: Manual, Standby, Normal,
Autotune, Ramp/Soak Recipe, Run and Hold. To select a different
operating mode, press the Mode/Enter key for three seconds.
The operating mode that the controller is currently in will be displayed. To index through the available operating modes, press the
Raise or Lower keys. When the desired mode is displayed,
press the Mode/Enter key once to select the mode.
Manual
Standby
Normal
Autotune
(Only available when unit is placed in Standby mode
and one output is PID.)
Start Ramp/Soak Recipe
(Only when programmed.)
Run
(Only available when recipe is active.)
Hold
(Only available when recipe is active.)
Operating Modes
Manual operating
mode overrides automatic control, allowing
you to control the
outputs using a fixed
percentage of output
power, regardless of
the process variable
or setpoint.
If current automatic
control is PID, transfer
to Manual mode is
“bumpless.”
Manual Used to set control output percentage
(Fixed Output Percentage) independent
of Process Value. To set percentage,
use the Menu Access key to select
and the Raise or Lower keys
to set the value.
Output 1 is a control output.
is displayed if Output 2 is a control
.
output
Standby Used to disable control outputs.
Normal Normal automatic control.
Autotune Used to initiate the autotuning
sequence (from Standby only).
Ramp/Soak Used to start ramp/soak recipe mode.
Recipe
Run Used to enable Run function
Hold Used to enable Hold function
is displayed if
9
11
Menu System
Overview
If a key press is not
sensed within five
minutes, the controller automatically exits
the Menu System and
reverts to the Process
Value display.
The Parameter Menu System is organized into ten basic
menus: Input, Display, Output, Control, Alarm, Tune,
Recipe, Supervisor, Calibration, and Option. To access the
Menus, press and hold the Menu Access key for approximately 3 seconds until a menu label appears in the upper display. There are additional menus presented when an option
is selected under the Option menu; however, the options
are non-functional unless the appropriate option board has
been installed. Pressing the Menu Access key indexes
from menu to menu. Pressing the Mode/Enter key
indexes through the parameters in a particular menu. The
Raise and Lower
keys are used to modify the visible
menu parameter.
Each menu contains a logical group of parameters related
to one another. Furthermore, the sequence of the menus
has been carefully chosen to put the most important setup
menus first.
10
Menu System
Overview
To return to Process
Value at any time,
press and hold Menu
Access key for
three seconds
System
Menu
Figure 10. Series C Functional Diagram
for 3 seconds
once
for 3 seconds
Variable
Display
Process
for 3 seconds
for 10 seconds
once
Security
Levels
Selection
Mode
11
Menu System
Overview
Notes: 1. It is recommended you start with the input menu.
Menu
Access
2. Parameter labels displayed will vary, depending
upon the controller’s configuration.
Key
Figure 11. Chart of Series 16C Menu System
and Security Levels
(Continued on Next Page)
Mode/
Enter Key
(number)
(number)
(number)
(number)
(number)
12
Figure 11. Chart of Series 16C Menu System
and Security Levels
(Continued from Previous Page)
Functional When Option Card Installed
* See options manual for
parameter selections.
Mode/
Enter Key
Raise/
Lower Key
(three seconds)
Security Levels
(Key Lockout) = No Access
(Setpoint) = Setpoint Value or Output
Percentage (Manual Mode)
(Setpoint plus Mode) = Plus
(User) = Plus
(Configuration) = Plus
(Factory) = Plus
13
Menus and Parameter
Descriptions
Menus and Parameters
Input
Display
Used to select sensor-related parameters, such as input type,
limits, and scaling.
Used to set or change decimal position and display units.
Output Used to specify output usage, control methods, and alarms.
Note: This menu is also functional for controllers not
equipped with alarm hardware; however, alarm indication
will be only visual via the A1 and A2 LEDs on the front panel.
Control
Alarm
Tune
Recipe
Supervisor
Calibration
Option
Communications
Contact/Digital
Input
Remote Analog
Setpoint
Auxiliary Output
Used to select parameters associated with the control methods.
Used to select alarm parameters .
Used to set the autotune damping parameter.
Used to set ramp and soak parameters.
Used to set fail-safe and supervisory parameters.
Used to recalibrate input.
Used to select installed option.
(Option) Used to set serial communications parameters.
(Option) Used to select switch input functions.
(Option) Used to enter remote analog setpoint parameters.
(Option) Used to set auxiliary output parameters.
14
Input Menu
NOTE: FOR A MORE DETAILED DESCRIPTION OF MENU
PARAMETERS, REFER TO THE GLOSSARY
WHICH BEGINS ON PAGE 64.
The first parameter that needs to be set is Input Type. The remaining
Input Menu parameters will change, depending upon whether a linear
input type or a temperature input type is selected. Other menu parameters related to the sensor range may also change. After selecting
your Input Type, refer to the corresponding section on page 16 for the
remainder of the Input Menu parameters.
Input Menu
Display Parameter Selection
Input Type Type J thermocouple
Type B thermocouple
Type C thermocouple
Type E thermocouple
Type K thermocouple
Type N thermocouple
Type NIC thermocouple
Type NNM thermocouple
Type R thermocouple
Type S thermocouple
Type T thermocouple
Platinel II thermocouple
100 ohm
platinum RTD
15
17
Input Menu
Input Menu (continued)
Display Parameter Selection
Input Type 100 ohm
compressed RTD
0-20 mA
4-20 mA
0-10 mV
0-50 mV
0-100 mV
10-50 mV
0-1 V
0-5 V
0-10 V
JMPØ2
1-5 V
Note: When you ordered your controller, an input type was specified and the controller was set up
accordingly and calibrated for that input type at the factory. If you decide to change input type from
thermocouple to RTD or vice-versa, you will need to recalibrate the controller unless you ordered the
“Calibrate All” option. (Refer to page 56 for information on recalibration.) If you are changing from a
temperature input type to a linear input type, you MUST recalibrate and change the jumper settings as
indicated in the above table.
JMPØ1
Input Jumper Settings
Input Type JMPØ1 JMPØ2
Thermocouple Out Out
RTD Out Out
Voltage <100 mV Out Out
Voltage >100 mV In Out
Current Process In In
Input Menu
Temperature Input Type
Display Parameter Selection
Bias (Display offset) -100 to 100
Lower Setpoint Limit Span of Sensor
Upper Setpoint Limit Span of Sensor
Filtering 0.1-10.0 sec.
Linear Input Type
Display Parameter Selection
Bias (Display offset) -100 to 100
Low Scale -1999 to 9999
High Scale -1999 to 9999
Lower Setpoint Limit Span of Sensor
Upper Setpoint Limit Span of Sensor
Filtering 0.1-10.0 sec.
16
Display Menu
Display Parameter Selection
Decimal Position 0-3 Linear Inputs
0-1 TC/RTD
Filter 0.1-10.0 sec
Units* Fahrenheit
Celsius
Kelvin
*NOTE: Does not appear for linear inputs.
Output Menu
Blanking
(Time selected before
setpoint diplay turns off.)
The first parameter that needs to be set in the Output Menu is the
Output Type. There are three possible Output Type configurations:
PID, On/Off, Alarm, or Off. (If you are not sure which Output Type
is best for your particular application, refer to the Glossary for an
explanation of Output Types.) The remaining menu parameters in the
Output Menu will change, depending on the Output Type selected.
The Control Menu will also change, depending on the Output Type
selected. If you ordered two outputs, you can select two different
Output Types. After setting your Output Type, refer to the corresponding sections below for the remaining Output Menu parameters. For
simplification purposes, the following sections assume the same
Output Type for both outputs. If you selected different Output Types,
refer to both of those sections.
0-9999 sec
,
Output Type
Display Parameter Selection
Output 1 Type
Output 2 Type
JMPØ1
17
19
Output Menu
Control Menu
Setting Derivative
(Rate) or Integral
(Reset) to
disables that aspect
of PID control.
If BOTH outputs are
set to direct-acting or
BOTH outputs are set
to reverse-acting, then
only one proportional
band selection will be
displayed.
18
PID Output Type
Output 1 Action Reverse-acting (Heating)
Direct-acting (Cooling)
Output 1 Cycle Time* 0.2; 1 to 120 seconds
Output 1 Low Limit 1-100%
Output 1 High Limit 1-100%
Output 2 Action Reverse-acting (Heating)
Direct-acting (Cooling)
Output 2 Cycle Time* 0.2; 1 to 120 seconds
Output 2 Low Limit 1-100%
Output 2 High Limit 1-100%
*Recommended Cycle Time Settings
Output Type Recommended Setting (seconds)
B (5A/3A) 15 to 120
E (0-20 mA) 0.2
F (4-20 mA) MUST be set to 0.2
G (4-20 mA) MUST be set 0.2
S (pulsed 20 Vdc) 0.2
T (S.S. relay) 15 to 120**
Y (5A/3A) N.C. 15 to 120 (Output 2 only)
** “T” outputs directly driving non-inductive loads (small heaters) can have
cycle times as low as 0.2 seconds.
PID Output Type
As with the Output Menu, the Control Menu will change, depending
upon the Output Type selected. Note: These parameters are auto-
matically set during the autotune procedure. We do not recommend
altering the value of these control parameters unless your process
requires manual tuning.
Display Parameter Selection
Proportional Band 1 1...to span of sensor
Proportional Band 2 1...to span of sensor
Derivative Action (Rate) 0 to 2400 seconds
Manual Reset OFF, -100% to 100%
NOTE: The Integral Action (Auto Reset) parameter appears only if OFF
is selected in the Manual Reset parameter.
Integral Action (Auto Reset) 0 to 9600 seconds
Output Menu
On/Off Output Type
Display Parameter Selection
Output 1 Action Reverse-acting (Heating)
Direct-acting (Cooling)
Output 2 Action Reverse-acting (Heating)
Direct-acting (Cooling)
Control Menu
On/Off Output Type
If both outputs are set to in the Output Type Menu, the
controller will function as a non-controlling indicator. Control
outputs will be disabled and the Operating Modes will not be
displayed.
Display Parameter Selection
Deadband 1 Negative span of sensor to
positive span of sensor
Hysteresis Output 1 1...to span of sensor
Deadband 2 Negative span of sensor to
positive span of sensor
Hysteresis Output 2 1...to span of sensor
19
21
Notes On Alarms
Deviation, Inverse
Band, and Normal
Band Alarms track
with setpoint.
When a latching alarm
has been activated and
the alarm condition
has been removed, the
Mode/Enter key
must be pressed to
unlatch the alarm.
Outputs can be set up as an alarm, similar to the standard
alarm format. Four types of alarms are available: Process,
Deviation, Inverse Band, and Normal Band. All alarms may be
configured to be inhibited on power-up for a configurable
time duration.
Process Alarm: Activates at preset value, independent
of setpoint. “High” process alarm
activates at and above alarm setting.
“Low” process alarm activates at and
below alarm setting.
Deviation Alarm: Activates at a preset deviation value
from setpoint. “High” or “Low” deviation
alarm activates above or below setpoint
according to the preset deviation value.
Inverse Band Alarm: Activates when the process is within
a specified band centered around the
setpoint.
Normal Band Alarm: Activates when the process exceeds
a specified band centered around the
setpoint.
Latching Alarms
The Series C’s alarms may also be configured as latching
alarms by selecting in the Alarm Action parameter
selection.
20
Output Menu
Note: The Control
Menu does not apply
to an Alarm Output
Type; therefore, the
Control Menu does
not appear.
Alarms A1 & A2 can
be set up using this
same information
in the menu.
Alarm Output Type
Display Parameter Selection
Output 1 Alarm Action
(Latching)
(Normal)
Output 1 Alarm Operation (Process Low)
(Process High)
(Inverse Band)
(Normal Band)
(Deviation Low)
(Deviation High)
Output 1 Alarm Delay 0-9999 sec
Output 1 Alarm Inhibit 0-9999 sec
Output 1 Alarm Setpoint Span of Sensor
Output 2 Alarm Action
(Latching)
(Normal)
Output 2 Alarm Operation (Process Low)
(Process High)
(Inverse Band)
(Normal Band)
(Deviation Low)
(Deviation High)
Output 2 Alarm Delay* 0-9999 sec
Output 2 Alarm Inhibit** 0-9999 sec
Output 2 Alarm Setpoint Span of Sensor
*Alarm Delay - the time delay between the detection of the alarm condition and the
initiation and indication of the output action.
**Alarm Inhibit - prevents low setpoint alarm activation during cold startup applications.
21
Autotune
Damping Menu
Recipe (Ramp/
Soak) Menu
22
Display Parameter Selection
Damping Low
Normal
High
Note: The damping parameter specifies how aggressively the
controller performs its autotuning. The “Normal” setting is a
compromise between the fast recovery and overshoot. The
“Low” setting provides faster recovery, but with the possibility of overshoot; the “High” setting a slower recovery, but with
minimum or no overshoot.
Single Setpoint Ramp Time
This selection will cause the controller to ‘ramp’ the
process from the starting point (current process value)
to the setpoint in the time specified. This ramp will take
place at startup when selected from the Ramp/Soak menu.
The setpoint must be at least ±0.2% of sensor span for the
ramp to be employed.
Multi-Step Ramp
This selection will enable the programming of a recipe (make
all ramp/soak recipe variables visible). Recipes can be resumed
on startup if interrupted by a power failure or initiated, held, and
terminated from the front panel via the Mode Menu or with the
logic input option (initiate and held/resumed only).
Holdback Band
Specifies the maximum number of degrees above or below
setpoint that the process can be for the segment timer to keep
going. The timer will hold while the process settles back into the
band and then continue. If this feature is not desired, this parameter should be set to which will disable it.
Termination State
This parameter determines what the control will do at the
completion of a recipe. Last Setpoint refers to the last
temperature specified in the ramp/soak recipe. Default
Setpoint refers to the standard setpoint which was in effect prior
to recipe initiation.
Recycle Number
Specifies the number of times after the first time that the recipe
is run before the program terminates.
Recipe (Ramp/
Soak) Menu
If a ramp/soak error
condition occurs, the
upper display will
toggle between
and the numeric error
code for three seconds
before the recipe
terminates. Possible
error codes are:
02 = Recipe Empty
(i.e. no non-zero ramp
times)
05 = Insufficient
Setpoint-Process Value
Deviation
Power Fail Resume
Setting this parameter to On will cause the control to resume
a recipe which was active when a power failure occurred. The
recipe will resume at the start of the last active ramp or soak
segment.
Ramp/Soak Events (1-8) (If alarms are configured as ramp/soak events.)
Ramp/Soak events occur at the beginning of their designated
segment. All events are terminated once the recipe has been
completed or terminated. This can be used as an alarm when a
segment is reached.
Display Parameter Selection
Recipe Option Single-Setpoint
Ramp
Multi-Step Ramp
Disabled
Single-Setpoint 1-9999 mins.
Ramp Time*
*NOTE: Only available when single-setpoint ramp is selected.
Holdback Band Off-100 degrees
Termination State Last Setpoint
Default Setpoint
Recipe to Standby
23
25
Recipe (Ramp/
Soak) Menu
For Ramp Events and
Soak Events to be
employed, Alarm 1 or
Alarm 2 must be set for
event usage in the
Alarm Menu.
Supervisor Menu
The Failsafe State is
only enforced when
a problem is detected
with the process
input. It is not reliably enforceable in
instances of internal
circuitry failure such as
EEPROM problems.
NOTE: The following seven parameters are only available when
multi-step ramp is selected.
Display Parameter Selection
Recycle Number 0-99,
(Recipe Executions)
Power Fail Resume Off
On
Ramp Times 1-8 0-9999 mins.
Ramp Events 1-8 Alarm 1 On
Alarm 1 Off
Alarm 2 On
Alarm 2 Off
Disabled
Soak Levels 1-8 Display Units, FS
Soak Times 1-8 0-9999 mins.
Soak Events 1-8 Alarm 1 On
Alarm 1 Off
Alarm 2 On
Alarm 2 Off
Disabled
Display Parameter Selection
Output 1 0 to 100%
Failsafe State of output
Output 2 0 to 100%
Failsafe State of output
Loop Break Time Off, 4-9600 sec
Highest Reading n/a
Lowest Reading n/a
Load Default
Parameters
Choosing “Yes” to Load Default Parameters resets all menu
parameters to factory settings.
Output % High Limits
are ignored when the
unit enters a Failsafe
State.
24
Calibration Menu
Toggles with the temperature value that should be input to
perform the low calibration operation.
The low calibration operation is triggered by pressing the up
arrow key.
Toggles with the temperature value that should be input to
perform the high calibration operation.
The high calibration operation is triggered by pressing the
up arrow key.
Options Menu
Display Parameter Selection
Installed Card
Serial Communications
Serial Communications
with Switch Input
Remote Analog Setpoint
Auxiliary Output
Alarm
Switch Input with Alarm
Note: See options manual for parameter selections.
25
27
Autotuning
In order for the controller
to autotune properly, the
setpoint value must be at
least 1% of span above or
below the initial process
value. Make sure that
the Setpoint Target Time
parameter is set to OFF.
Tuning accuracy increases as the spread between
ambient and setpoint
value increases.
Tuning should be
performed with system
in equilibrium (no latent
energy remaining).
To place the controller in Autotune mode:
1) Configure the controller by following the directions for
Initial Setup Sequence through Step 3 on page 7. Set
damping parameter. (See page 22.)
2) If the controller is not already in Standby mode, place it
in Standby now as follows. Press and hold the
Mode/Enter
key for three seconds. Display will indicate
your current operating mode. Press the Raise key or
Lower key to select Standby. Press Mode key again
and the display will alternate between and the process value. This will deactivate all outputs.
3) If Setpoint Value has not been entered, adjust setpoint
now by using the Raise or Lower key to set the desired
setpoint.
4) Wait for process to stabilize before proceeding, e.g., in the
case of a heating and cooling process, return to ambient
temperature.
5) Initiate Autotuning. Press and hold the Mode/Enter key
again for three seconds, then press the Raise or Lower
key repeatedly until appears. Finally, press the
Mode/Enter key again. The display will alternately indicate
and process value as the controller “learns” the
proper proportional band, derivative, and integral values
for the process. If unacceptable overshoot occurs on
restart, shut down the process and increase the damping
setting. If sluggish response is observed, shut down the
process and decrease the damping setting.
26
Autotuning
If a tune error condition occurs, the upper display will toggle
between and a numeric error code for three seconds before
the tune process terminates. The controller will then automatically
go into Standby mode when a tuning error occurs. Possible error
codes are:
02 = No PID Device Configured
03 = Incorrect Output Action
05 = Insufficient Setpoint-Process Value Deviation
08 = Invalid Tune Results
09 = Tune Timeout
Autotuning Procedure Diagram
Note: Keep in mind that the setpoint value must be at least 1%
of span above or below the initial setpoint, and that the process
value must be stable prior to initiating the tune.
Hold for
three
seconds
Hold for
three
seconds
Current
Mode
Standby
Mode
Press
Press until
appears
Standby
Mode
Autotune
Mode
Press
Once
Press
Once
Flashes
Flashes
Controller is
now autotuning
27
Manual Tuning
T
While some processes
other than heat or
cool applications may
respond successfully to
autotuning procedures,
the controller may need
to be manually tuned
for non-temperature
processes.
Manual Tuning Procedure
(Zeigler-Nichols PID Method)
This tuning method may be used for non-temperature control
processes or if the spread between ambient temperature and
process operating temperature is small. For best results, the
use of a recording device is required when tuning with this
method.
1) For temperature control processes, disable any cooling
device used.
2) With the power off and the controller NOT in the Key
Lockout security level, apply power and immediately put
the controller in Standby mode by pressing the Mode/
Enter key for three seconds, the Raise key until
appears and press the Mode/Enter key again.
3) If you have a direct-acting output, it must be disabled
before proceeding further = .
4) Under the Control menu, make sure that the derivative
term , the offset term , and the integral
term are all set to zero, and the proportional
band or is set to the maximum setting.
5) Adjust setpoint to the desired value with the Raise/Lower
keys.
6) Press the Mode/Enter key for four seconds, the Raise
key twice
return the controller to normal operation.
7) While monitoring the recording device, decrease the
proportional band value by repeatedly halving the
value until a small, sustained temperature oscillation is
observed. Measure the period of one cycle of oscillation
(“T” on the diagram below).
, and the Mode/Enter key again to
8) Divide the period of oscillation (T) by eight. The resulting
number is the correct Derivative time in seconds.
Multiply this number by four. This is the correct Integral
time in seconds.
28
9) Multiply the bandwidth value obtained in Step 7 by 1.66
and enter this as the new proportional band value.
Error Codes
If an error code cannot
be cleared by using
the actions provided,
contact factory.
Display Problem Actions
Open Sensor Check sensor,
wiring, and Input.
Reversed Sensor Check the type
selection in
the Input menu,
and check sensor
polarity.
Loop Break Correct problem
and reset controller.
Checksum Error Press any key
RAM Error to perform a
Defaults Loaded soft reset and
EEPROM Write Failure reinitialize
controller.
Power Fail Resume No further resume
Feature Disabled actions available.
Plus other Unexpected or Reset
2-Digit Invalid Interrupt controllers
Code
Autotune Errors
If a tune error condition occurs, the upper display will toggle
between and a numeric error code for three seconds before
the tune process terminates. The controller will then automatically
go into Standby mode when a tuning error occurs. Possible error
codes are:
02 = No PID Device Configured
03 = Incorrect Output Action
05 = Insufficient Setpoint-Process Value Deviation
08 = Invalid Tune Results
09 = Tune Timeout
Ramp/Soak Errors
Possible error codes are:
02 = Recipe Empty (i.e. no non-zero ramp times)
05 = Insufficient Setpoint-Process Value Deviation
29
Technical
Specifications
30
Operating Limits
Ambient Temperature 32°F to 140°F (0°C to 60°C)
Relative Humidity Tolerance 90%, Non-Condensing
Power 100 to 250 V
50/60 Hz (Single-Phase)
100 to 250 Vdc
24 Vac/dc
Power Consumption Less than 6 VA
Performance
Accuracy ±0.20% of Full Scale
(±0.10% Typical), ±1 Digit
Setpoint Resolution 1 Count / 0.1 Count
Repeatability ±1 Count
Temperature Stability 5 µV /°C (Maximum)
TC Cold-End Tracking 0.05°C /°C Ambient
Noise Rejection >100 dB Common Mode,
>70 dB Series Mode
Process Sampling 10 Hz (100 ms)
Control Characteristics
Setpoint Limits Automatically Adjust to
Selected TC/RTD
Alarms Adjustable for High/Low;
Selectable Process, Deviation,
or Band Alarms
Proportional Band 1 to Span of Sensor
Integral 0 to 9600 Seconds
Derivative 0 to 2400 Seconds
Cycle Time 200 ms; 1 to 120 sec
Control Hysteresis 1 to Span of Sensor
Autotune Operator Initiated from
Front Panel
Manual Control Operator Initiated from
Front Panel
Mechanical Characteristics
Display Dual, 4-digit 0.36” (9.2 mm)
LED display
Process Value: Orange
Setpoint Value/Menu: Green
Numeric Range -1999 to 9999
Front-Panel Cutout 1.771” x 1.771”
(45 mm x 45 mm)
Depth Behind Panel 3.937” (100 mm)
Front Panel Rating NEMA 4X
Operating Temperature 32 to 140° F (0 to 60° C)
Humidity Conditions 90% R.H. max.,
non-condensing
Parameter Retention Solid-state, non-volatile
memory
Connections Input and output via barrier
strip with locking terminals
Contacts Twin bifurcated
Technical
Specifications
Input Type
Thermocouple B, C, E, J, K, N, NIC, NNM, R, S, T, Platinel II
Maximum lead resistance 100 ohms
for rated accuracy
RTD Platinum 2- and 3-wire, 100 ohms at
0° C, DIN curve standard (0.00385)
1000 ohms available
Linear 0-50 mV/10-50 mV, 0-5 V/1-5 V
0-20 mA/4-20 mA, 0-100 mV, 0-10 V
Output Device
B 5 A (120/240 Vac) relay, normally
open, used for switching resistive loads. If
relays or solenoids are to be driven, select
the “T” output. If a “B” output is selected,
order snubber network 235Z005U01.
E 0-20 mA
F 4-20 mA, full output to load with 500 ohm
impedance max.
G High impedance ‘F’ (800 ohms max.)
S 20 Vdc pulsed output for solid-state relays.
T 1 A @ 120/240 Vac , solid-state relay, zero
voltage-switched and optically isolated from
drive signal. Only resistive loads to 1A may
be controlled directly. Larger loads may be
controlled using an external contactor.
Y 5 A (120/240 Vac) relay, but normally
closed (output 2 only).
Alarm Type
See ordering code on page 55.
31
33
Ordering Codes
Model
16
Code Input Type
CT Thermocouple
CR RTD
CS Compressed RTD
CM Millivolt Linear
CV Volt Linear
CC Current Linear
CA All
CB TD & T/C
Input
Calibration Type
C
Output
1
Code Output 1
0 None
B Relay (N.O.)
E 0 to 20 mA
F 4 to 20 mA
G High
Impedance ‘F’
P 20 Vdc @ 35 mA
S Pulsed 20 Vdc
T Solid-State Relay
X 0 to 10 Vdc
Code Output 2
0 None
B Relay (N.O.)
E 0 to 20 mA
F 4 to 20 mA
G High
Impedance ‘F’
P 20 Vdc @ 35 mA
S Pulsed 20 Vdc
T Solid-State Relay
Y T.C. Relay
Output
2
Standard
Options
Code Option
00 None
Alarms
10 Dual SSR, N.O.
20 Dual Open
Collector
21 Dual 24 Vdc
22 Dual SSR, N.C.
23 Relay, N.O.
Communications
30 RS-232/Athena+
RS-485, Athena+ with
Contact/Digital Input
31 No Switch
36 Switch Close
37 Switch Open
38 5V Input
Contact/Digital Input
(with Alarm)
40 Switch Closed
41 Switch Open
42 5 V Input
RS-485, Modbus with
Contact/Digital Input
45 No Switch
46 Switch Close
47 Switch Open
48 5V Input
Transducer Excitation
50 10 Vdc
51 12 Vdc
52 15 Vdc
53 5 Vdc
Auxiliary Output
60 4 to 20 mA
61 1 to 5 V
62 0 to 20 mA
63 0 to 5 V
Special Options
Code Option
AB Back Cover:
Screw Mount
AD No-Name Overlay,
Standard Athena
Patterns and Colors
AZ 24 Vac/Vdc Supply
EO SPI Communications
Protocol
EP Engel/Arburg
Communications
Protocol
32
Recalibration
Procedures
The Series C controller
is precalibrated at the
factory. Under normal
circumstances, the
factory calibration
should be valid for the
life of the instrument.
If recalibration should
be required, allow the
controller to warm up
for 15 minutes and
follow these steps
carefully.
1) Remove power from the controller and disconnect all
output devices. Disconnect input. Attach an appropriate
calibrator to the input terminals.
2) Apply power to the calibrator, making sure that the displayed value is not outside the range of the controller.
Then, apply power to the controller.
3) Index to the Calibration Low menu item in the Calibration
Menu.
(You must have Security Level set to “Factory” to access this menu.)
4) Dial Calibrator to prompted value on the controller’s display. See chart below for RTD resistance vs. temperature
values.
5) Allow the controller to settle for at least one minute.
6) Press Raise Key.
7) Repeat Steps 4, 5, and 6 for the Calibration High setting.
8) Press the Menu Access key for three seconds to return to
the Process Value display.
RTD Calibration Values
RTD Cal Lo 0° C 32° F 100Ω
RTD Cal Hi 768° C 1414° F 366Ω
RT.D Mid-range 328° C 622.4° F 222Ω
33
Quick-Helps
1. To return the unit to last operating mode
(Normal, Standby, FOP, or Tune):
Action Display
From Menu System: Press and hold PV + SV + Mode
From Security Level Menu: Press PV+ SV + Mode
2. To enter Standby
operating mode:
From Normal Press and hold
operating mode:
Press
From FOP (Manual) Press and hold
operating mode:
Press
Press + PV + SV
From Menu System: Press and hold
Press
for 3 sec.
Action Display
for 3 sec.
Press
for 3 sec.
for 3 sec.
Press and hold
for 3 sec.
+ PV + SV
Press + PV + SV
From Security Level Menu: Press PV + SV
for 3 sec.
Press
Press and hold
Press + PV + SV
3. To escape from Standby Action Display
operating mode:
for 3 sec.
Press
Press and hold
Press PV + SV
4. To initiate Autotuning: Action Display
Enter Standby
operating mode
(See Quick-Help #2)
Press
Press
34
Press + PV + SV
Quick-Helps
5. To abort Autotuning Action Display
and return to normal Press and hold
operation:
Press
for 3 sec.
Press PV + SV
6. To enter FOP (Manual) Action Display
operating mode:
Press + PV +
% of Power
Value
Press
Press and hold
for 3 sec.
to set new
% of Power Value
Press to + PV +
set % of Power % of Power
for Output 2 Value
if desired.
7. To escape from FOP Action Display
(Manual) operating mode:
Press
Press and hold
for 3 sec.
Press PV + SV
35
Warranty/
Repairs
36
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,
INCORPORATED 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
MISUSE 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 PURCHASER AND UNDER NO CIRCUMSTANCES
SHALL SELLER BE LIABLE FOR SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL 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
SUBJECT TO CHANGE WITHOUT NOTICE.
Warranty/
Repairs
Unit Repairs
It is recommended that units requiring service be returned to
an authorized service center. Before a controller is returned
for service, 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 obligation 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
written permission of Athena Controls, Inc.
37
39
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:
230 mA for a 24 Vac/dc input fuse rating=700 mA
60 mA for an 85-250 Vac input fuse rating=100 mA
Output Specifications
Output Type Max current Voltage Leakage
B 5 A 250 Vac 1000 M ohms
T 1 A 250 Vpk 1 mA
S 20 mA 5 V NA
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.
3. Allow the unit to dry completely prior to reapplying power.
38
Glossary
Alarm Delay - the time delay between the detection of the alarm condi-
tion and the initiation and indication of the output action.
Alarm Inhibit - prevents low setpoint alarm activation during cold startup
applications.
Bias - allows the operator to compensate for any difference between sensor
temperature and the point to be measured. The process display and setpoint will be offset by the value entered in the Bias parameter in the input
menu. Ex: Desired temperature is 150 degrees. Sensor is adjacent to heater
and reads 50 degrees higher than the actual process temperature. Enter
bias of -50. Enter setpoint of 150. Process will display 150 even though
sensor will be measuring 200 degrees.
Blanking - controls the time the setpoint value display remains on. After the
set time, the setpoint value display turns off. Pressing any button causes the
setpoint value display to reappear for the selected time interval.
Cycle Time - The period of time in which the controller’s output completes
an on-off cycle (Proportional Output Type only).
Example: Output type = Mechanical relay
Cycle time = 10 seconds
Output power = 50%
Controller output = 5 seconds closed,
5 seconds open
Deadband - In On/Off temperature control, it is the band above or below
the setpoint where there is no output action. It has the effect of moving the
apparent setpoint.
Derivative (rate) - Adjusts the controller gain quickly in response to load
changes.
Failsafe State - designates the percentage of power output that the con-
troller defaults to after it detects a loop break condition and after the loop
break time has elapsed.
Filter (in Display menu) - changes the filtering speed for the process value
display only. It does not affect control. This parameter is mainly used to
slow down the flickering of the display when the decimal position chosen is
greater than zero.
Filtering (in Input menu) - sets the time period over which the process
value is averaged.
Highest Reading - records the highest process value read by the controller.
It may be reset to zero by using the Raise or Lower arrow keys.
Hysteresis - In On/Off temperature control, hysteresis represents the band
where the output changes state from deactivated to activated. It prevents
chattering around the setpoint and prevents rapid output cycling.
Integral (automatic reset) - slowly adjusts the position of the Proportional
Band (range of power output) to eliminate offset error.
Loop Break - a condition where the input is not changing or responding
properly to the output action. This could be caused by a thermocouple or
39
41
Glossary
input failure, or a heater or load failure.
Loop Break Time - the time interval from when the controller detects a
loop break condition and the initiation of the failsafe state.
Lowest Reading - records the lowest process value read by the controller.
May be reset to zero by using the Raise or Lower arrow keys.
Lower Setpoint Limit - prohibits users from adjusting the setpoint lower
than the selected value.
Manual Reset - an adjustment that moves the Proportional Band up or
down by a fixed percentage so that more or less power is applied at setpoint. It is used to eliminate offset error.
On/Off Output Type - In a heating application, the controller applies 100%
output power if the process temperature is below the setpoint and 0% at
the setpoint. For a cooling application, the controller applies 100% output
power if the process temperature is above the setpoint and 0% output
power at the setpoint. There are only two output states: fully on and fully
off.
Applications for On/Off Control:
1. When temperature oscillation is acceptable.
2. When constant cycling of mechanical devices is
prohibited (Compressors, Blowers, etc.)
3. Under-powered processes
Output Low Limit % - Prohibits the controller’s output from going
below the specified percentage.
Output High Limit % - Prohibits the controller’s output from going above
the specified percentage.
PID Output Type (Proportional - Integral - Derivative) - The controller
modulates output power by adjusting the output power percentage within
a proportional band. Power is proportionally reduced as the process
temperature gets closer to the setpoint temperature. PID control helps
reduce overshoot on start-up, enhances stability, and compensates for
process lag. The PID parameters are automatically calculated for a particular application during the autotune procedure.
Applications for PID Control:
1. Where process temperature lags exist
2. When load changes are present
3. When overshoot is prohibited
4. When very accurate control is required
Proportional Band - the band (expressed in degrees of temperature) in
which the controller modulates its power percentage.
Temperature Lag - The product of thermal resistance and thermal capac-
ity. Also defined as delay of the transmission of heat from the controlled
element to the sensor caused by thermal mass of the process material
and/or process container, or the distance between the control element
and the sensor.
Upper Setpoint Limit - prohibits users from adjusting the setpoint higher
than the selected value.
40
Quick Setup Instructions - Series 16C Temperature Controller
Experienced users, already familiar with the Series 16C, and using the
controller with PID outputs, may follow these condensed instructions to
autotune the controller and get started quickly once the instrument is prop-
erly mounted and wired, and the Security Level is set to . Once setup
is complete, we recommend changing the Security Level back to the most
restrictive level suitable for your application.
These quick setup instructions are not meant as a substitute for reading the
full instruction manual supplied with the controller. Please be sure to read
through the manual for specific details of operation and, most importantly, for safety precautions.
If you have any questions, or experience problems with setting up your controller, consult the full
instruction manual first and, if you still need assistance, contact your Athena representative or call
1-800-782-6776.
Menu Access Raise Lower Mode/Enter
1. Apply power. After self-check display stops, place controller in Standby mode by pressing and holding the
Mode/Enter key for 3 seconds, the or key until appears, and then the key again.
will flash, alternating with the Process Value.
2. Press and hold the Menu Access key for 3 seconds until is displayed. Press key once until
appears, then use or keys to select sensor input type.
3. Press to display . Then press once to display . Use or to select .
4. Press the key until Output 1 Action is displayed. Select the desired output action using the
or keys. (Reverse = Heating)
41
43
Keep This Information in a Safe Place
Configured Parameters Reference Data
Series C Temperature Controllers
Model Number
Zone Location
(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 reference 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 information 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 USA): 800.782.6776
Telephone: 610.828.2490
Fax: 610.828.7084
E-Mail: techsupport@athenacontrols.com
Website: athenacontrols.com
Configured Parameters Reference Data
Inp
Type
BIAs
OUTP
01.tY
01.Ac
Firmware Version No.
Series C Temperature Controllers
CtrL
02.tY
02.Ac
db.1
HYS.1
ALr.
A1.AA
A1.AO
SCL.L
SCL.H
Sp.LL
Sp.HL
I.FIL
Options
42
01.cY
01.LL
01.HL
01.AA
01.AO
01.dl
01.IH
01.SP
02.cY
02.LL
02.HL
02.AA
02.AO
02.dl
02.IH
02.SP
db.2
HYS.2
Pb1
Pb2
dEr
OFFS
Int
A1.dl
A1.IH
A1.SP
A2.AA
A2.Ao
A2.dl
A2.IH
A2.SP
Notes
43
For Toll-FreeTechnical Assistance in the USA,
Call Toll Free: 1-800-782-6776
Athena Controls, Inc.
5145 Campus Drive
Plymouth Meeting, PA 19462 U.S.A.
Tel: (610) 828-2490
Fax: (610) 828-7084
Toll-Free in U.S.: 1-800-782-6776
Internet: www.athenacontrols.com
900M011U00 REVISION “B” / 09-13-2004
44
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