Omega C9000A User Manual

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C9000A SERIES

Autotune Temperature Controller

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User’s Guide

Servicing North America:

USA: One Omega Drive, P.O. Box 4047

ISO 9001 Cer

tified Stamford CT 06907-0047

TEL: [phone] FAX: [phone]
e-mail: [e-mail]

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Laval (Quebec) H7L 5A1, Canada
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378 / 1-800-622-BEST

®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

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Benelux: Postbus 8034, 1180 LAAmstelveen, The Netherlands

TEL: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic

TEL: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

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Toll Free in France: 0800 466 342
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tified Northbank, Irlam, Manchester

M44 5BD United Kingdom
TEL: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488

e-mail: [e-mail]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is
constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE
mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no
liability for any errors it contains, and reserves the right to alter specifications without notice. WARNING: These
products are not designed for use in, and should not be used for, human applications.

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i

TABLE OF CONTENTS

CN9000A SERIES

MINIATURE AUTOTUNE TEMPERATURE

CONTROLLER

SECTION

SECTION 1 INTRODUCTION..............................

1.1 General Description......................................

1.2 Available Models..........................................

SECTION 2 INSTALLATION...............................

2.1 Unpacking.....................................................

2.2 Cautions and Mounting Instructions.............

2.3 Wiring...........................................................

2.4 Typical Wiring Diagrams...............................

SECTION 3 OPERATION......................................

3.1 General Considerations................................

3.2 Controls and Indicators................................

3.3 Default (Pre-Set) Settings............................

3.4 Getting Started.............................................

3.4.1 Selecting Sensor and Adjusting Setpoint.....

3.4.2 Changing the Allowable Setpoint Default

Range (Function .24).................................

3.5 Parameter Adjustments (Standard

Functions)...................................................

3.5.1 Keying in Standard Functions......................

3.5.1.1 Example of Programming Functions

.0, .1, .2, .3- .23..........................................

3.5.1.2 Example of Programming Functions

.19 & .2 (SP2)...........................................

3.5.1.3 Example of Programming Functions

.24 and Special Case of Function .2.........

3.5.1.4 Details of Standard Function .0- .25............

Table 3-4, Standard Functions.0- .25........

3.6 Examples of Parameter Adjustments...........

3.6.1 Changing SP1 Proportioning Time

(Function.4)...............................................

PAGE

1

1
2

5

5
5
7
9

11

11
11
14
14
14

16

18
18

19

20

21
22
23
34

34

ii

TABLE OF CONTENTS (Cont'd)

SECTION

3.7 Negative Temperature Ranging..................

3.8 Manual Mode (Auto/Manual) Function .0

Option 4- 100)...........................................

3.9 Park Mode...................................................

3.10 Linear Process Inputs.................................

3.11 Second Output Operation...........................

3.12 Details of Advanced Functions .26- .50......

Table 3-6, Advanced Functions .26- .50...

3.13 Parameter Lock...........................................

SECTION 4 DIAGNOSTICS................................

4.1 Fault Indication............................................

4.2 Loop Break Alarm.......................................

4.3 Operational Diagnostics..............................

4.3.1 Diagnostics (Functions .38- .49).................

4.3.2 Duty Cycle Monitor (DCM) (Function .42)..

4.3.3 Autotune Tuning Data

(Functions .43- .49)..................................

SECTION 5 TUNING............................................

5.1 Autotune......................................................

5.1.1 Autotune AT.................................................

5.1.2 Using Autotune AT.......................................

5.1.3 Autotune PT (Push-to-Tune)

Function .0 Option 2.................................

5.1.4 To Abort Autotune.......................................

5.1.5 Over-riding Autotune Values.......................

5.1.6 Autotune Hints............................................

5.1.7 Autotune Value Display...............................

5.1.8 Proportional Cycle Time..............................

5.2 Manual Tuning............................................

5.2.1 The Simplified Method................................

5.2.2 Alternative Tuning Method..........................

PAGE

36

36
36
36
37
38
39
44

45

45
46
47
47
48

48

49

49
49
50

51
52
52
52
53
54
57
57
58

iii

TABLE OF CONTENTS (Cont'd)

SECTION

5.3 Proportioning Time......................................

5.4 Proportional Band.......................................

5.5 Integral (Reset) Time..................................

5.6 Derivative (Rate) Time................................

5.7 Derivative Approach Control.......................

5.8 Heating and Cooling...................................

5.8.1 General Considerations..............................

5.8.2 Cool Strategy for Heat-Cool Applications...

5.8.3 Setting Up Routine for Heat-Cool Control..

SECTION 6 CALIBRATION................................

6.1 Display Offset..............................................

6.2 Recalibrating to a Remote Standard..........

6.2.1 Sensor Error Correction (Function .9)........

6.2.2 Sensor Span Adjust (Function .35).............

SECTION 7 115/230 VAC AND 2-WIRE/

3-WIRE RTD CONVERSIONS..............

7.1 To Remove Main PC Board........................

7.2 115/230 VAC Voltage Conversion...............

7.3 2-Wire/3-Wire RTD Conversion..................

7.4 Installing the Triac, 4-20mA and 0-10 VDC

Output Options..........................................

SECTION 8 SPECIFICATIONS..........................

APPENDIX A: Function Quick Reference

Guide...........................................

APPENDIX B: Quick Start Up Instructions

PAGE

61
62
62
63
63
64
64
64
65

67

67
67
67
68

71

71
72
73

73

75

80

82

This page is intentionally blank.

iv.

1

SECTION 1 INTRODUCTION

1.1 GENERAL DESCRIPTION

The OMEGA®CN9000A Series Miniature Autotune
Microprocessor Controllers are designed for accurate, precise
temperature control. They feature high accuracy and reliability, as
well as sophisticated PID or Autotune PID with approach control
(PDPI) for optimal control during start-up and steady-state
operation.

The CN9000A controllers feature models with user selectable
inputs from nine thermocouple types or 2-wire RTD, or models
with 3-wire RTD input. These units are °C/°F switchable, offer a

0.1° resolution up to 200°, and the second setpoint and output are

standard. The controller can also be programmed to accept linear
voltage signals up to 20 mV.

The CN9000A features advanced PDPI control, which enables the
unit to suppress overshoot, and allows the process warm-up to be
tuned independently from the steadystate operating conditions. For
other processes, a user may select PiD (Proportional-Integral­Derivative), PD (Proportional-Derivative). Proportional, or On/Off
control.

The CN9000A controllers are well suited to a broad range of
applications, and are easy to install and operate. For most
applications, the user need only select the desired input type by
using the front pushbuttons. The CN9000A is ‘pre-set’ for control
parameters which are suitable for most applications. These pre-set
(or default) parameters can be changed by the operator at any
time, in order to fine-tune the controller to an individual process.

The controller can easily be used in the Autotune Mode, allowing
the microprocessor to attempt to calculate the optimum PID
parameters.

Selection of all operational controls is made through the three keys
on the front panel of the CN9000A, with the display prompting the
user for each step. After the parameters have been set, they can
be 'locked-in' by removing the jumper located under the front
bezel. The user may select the control mode and parameters, the
display resolution (1° or 0.1°) and the units (°C/°F). The user may
also utilize the ranging feature of the instrument, which limits the
range in which a setpoint may be chosen, or lock-out an operator
from changing the setpoint.

2

The second setpoint (or output) of the CN9000A may have
proportional or on/off control. The second setpoint is set as a
deviation from the primary setpoint. Cycle time, proportional band
and on/off deadband are all set independently of the primary
setpoint (SP1).

The CN9000A display has a large 31/2 digit green LED readout,
with auxiliary indicators for output 1 and output 2, and three LEDs
to indicate deviation from setpoint. The microprocessor, in addition
to automatic processing of key calculations, holds the data in non­volatile memory-with the ability to retain data for up to 10 years
with no power.

Refer to Figure 1-1 and Table 1-1 for the CN9000A model number
information.

Refer to Figure 1-2 and Table 1-2 for the plug-in replacement
output board and socket model number information for the
CN9000A.

*SSD output is a Solid State Driver (5 Volt DC Pulse) designed to
be used with a DC controlled solid state relay such as OMEGA's
model number SSR240DC45 relay.

Figure 1-1. CN9000A Model Number Information

1.2 AVAILABLE MODELS

CODES for the Input Sensor

1 Thermocouple

2-Wire RTD, or
Linear Millivolt Signal

23-Wire RTD

CODES for Output

No. 2

13A Mechanical

Relay

2 5VDC SSD*

CODES for Output No. 1

15A Mechanical Relay
2 5VDC SSD*
3 1A Triac SSR
44-20 mA DC
50-10 VDC

A

CN9

3

TABLE 1-1

CN9000A MODEL NUMBER DETAILS

MODEL INPUT OUTPUT 1 OUTPUT 2

CN9111A Relay Relay

CN9112A Relay 5VDC SSD*

CN9121A 5VDC SSD* Relay

CN9122A 5VDC SSD* 5VDC SSD*

CN9131A 1 A Triac Relay

CN9141A 4-20 mA Relay

CN9151A 0-10 VDC Relay

CN9211A Relay Relay

CN9212A Relay 5VDC SSD*

CN9221A 5VDC SSD* Relay

CN9222A 5VDC SSD* 5VDC SSD*

CN9231A 1 A Triac Relay

CN9241A 4-20 mA Relay

CN9251A 0-10 VDC Relay

For 230 VAC, add "-230VAC" at the end of the part number.

*SSD output is a Solid State Driver (5 Volt DC Pulse) designed to
be used with a DC controlled solid state relay.

Thermocouple

2-Wire RTD

Linear Millivolt

Signal

3-Wire RTD

4

Figure 1-2. CN9000A Series Replacement Output Board

Numbering Information

TABLE 1-2

CN9000A REPLACEMENT OUTPUT BOARD DETAILS

MODEL OUTPUT 1 OUTPUT 2

BD9011A Relay Relay

BD9021A 5VDC SSD Relay

BD9012A Relay 5VDC SSD

BD9022A 5VDC SSD 5VDC SSD

BD9031A* 1 Amp Triac SSR Relay

BD9041A*† 4-20 mA DC Relay

BD9051A*† 0-10 VDC Relay

*Requires that BD9021A is already installed in the controller.
†For 230 VAC models, add "-230VAC" to the part number

CODE Output No. 2

1 3A Mech Relay
2 5VDC SSD

CODES for Output No. 1

1 5A Mechanical Relay
2 5VDC Solid State Driver (Pulse)
3 1A Triac SSR
4 4-20 mA DC
5 0-10 VDC

BD90

A

5

Remove the Packing List and verify that you have received all
equipment. If there are any questions about the shipment, please
call the OMEGA Customer Service Department at 1-800-622-2378
or [phone].

Upon receipt of shipment, inspect the container and equipment for
any signs of damage. Note any evidence of rough handling in
transit. Immediately report any damage to the shipping agent.

NOTE

The carrier will not honor any claims unless all shipping
material is saved for their examination. After examining and
removing contents, save packing material in the event
reshipment is necessary.

READ THESE CAUTIONS BEFORE YOU INSTALL,
OPERATE, OR SERVICE YOUR CN9000A

For safe use apply good engineering practices applicable to all
products of this type.

1. Install in a grounded metal enclosure, prevent live parts from

being touched and ground sensor sheaths to avoid possible
shock hazard.

2. Wire according to the information in this manual and conform

with the appropriate standards and regulations.

Output number 2 should not be used as an alarm in a safety circuit
where damage or personal injury may be caused by equipment
failure. A separate unit should be used, instead.

SECTION 2 INSTALLATION

2.2 CAUTIONS AND MOUNTING INSTRUCTIONS

INSTALLATION CAUTIONS

ALARM CAUTION

2.1 UNPACKING

CAUTION

6

The controller functions are user selectable. It is therefore the
user's responsibility to ensure that the controller configuration
corresponds to the factory's requirements and is safe. Remove the
parameter lock jumper to restrict tampering after configuration.

The CN9000A is mounted in a panel through a 1.772" (45 mm)
square

1

/16DIN 43700 cutout using the speciai mounting clip

provided (refer to Figure 2-1).

To install the CN9000A, remove the rear socket by pressing the
lock buttons. Slide the controller into the panel cutout from the
front. Slide the mounting clip back onto the controller from the rear.
Press to home position until the clip holds the unit firmly in place. If
necessary, the mounting can be further tightened using the jacking
screws. Plug the rear socket back into place on the controller.

To remove the controller from the panel, pull the legs of the
mounting clips away from the controller case to release the
ratchet.

The minimum spacing for mounting several controllers is shown in
Figure 2-2.

CONFIGURATION CAUTION

MOUNTING INSTRUCTIONS

*To unplug socket, press in lock buttons and pull apart

Figure 2-1. Controller Mounting and Panel

Cutout Dimensions

7

Figure 2-2. Mounting Multiple Units

The CN9000A operates on either 115VAC ±15%, 50/60 Hz (std)
or 230VAC ±15%, 50/60 Hz (selectable by changing internal
jumpers-discussed in Section 7). The CN9000A outputs feature
either the standard mechanical relay or the optional non-isolated
5VDC Solid State Driver pulse output (designed for operating an
external DC SSR such as an OMEGA SSR240DC45). Three other
optional outputs are available using a plug-in replacement
combination socket. These outputs are a 1A Triac SSR, 0 to
10VDC, or a 4 to 20 mA DC output. They are described in
Table 1-2.

Figure 2-3 shows the rear view of the controller and designates
which signals connect to the terminals. The chart directly following
Figure 2-3 details the actual connections.

NOTE

When mounting multiple units
allow 3-1/2 inches from center to
center of the unit in the vertical
direction to allow for mounting
bracket and wiring, and 2 inches
in the horizontal direction for heat
dissipation.

3-1/2" Min

2" Min

1.772” square
Cut-out (typ)

2.3 WIRING

8

Figure 2-3. CN9000A, Rear View, Signal Connection

Designations

TERMINAL DESIGNATIONS AND SIGNAL CONNECTIONS

1 AC Power, 115 VAC 50/60 Hz (230 VAC, optional)
2 AC Power, Neutral

3RTD (black, if 3-wire RTD) (For T/C, do not use terminal.)
4 Thermocouple (-); or RTD (black if 3-wire RTD); or Neg.

Voltage

5 Thermocouple (+); or RTD (red, if 3-wire RTD); or Pos.

Voltage

6 Output 2 (SP2) Mechanical Relay Normally Open (N.O.)
7 Output 2 (SP2) Mechanical Relay Common (C.) or 5V Pulse (-)
8 Output 2 (SP2) Mechanical Relay Normally Closed (N.C.);

or 5V Pulse (+)

9 Output 1 (SP1) Mech Relay N.O.; 1 A SSR N.O.; 5V Pulse

(-); 0-10V (-); or 4-20 mA (-)

10 Output 1 (SP1) Mech Relay C.; 1A SSR C; 5V Pulse (+);

0-10 V (+); or 4-20 mA (+)

11 Output 1 (SP1) Mech Relay N.C.; or 1A SSR N.C.

Check side label on controller for supply voltage before wiring.

Your choice of thermocouple types J, K, T, E, R, S, N, B,
J DIN, and the Pt100 2-wire RTD inputs are selectable via the keys
on the CN91XXA version of the controller. The CN92XXA controller
is configured to accept a 3-wire RTD input only. Figure 2-4 shows
how to wire any of these sensor inputs to the controller.

91011 12
N.O. C. N.C. L N

-+ OV

+­N.C. C. N.O. + ­876543

(Output 1) (Power)

(Output 2) (Input Signal)

1 A SSR, MECHANICAL RELAY

0-10V, 4-20 mA, SSD (PULSE)

SSD (PULSE)

MECHANICAL RELAY

CAUTION

9

Figure 2-4. Thermocouple and RTD Input Wiring

Figures 2-5 and 2-6 illustrate typical wiring of the CN9000A
Controllers. (Standard controllers operate on 115VAC 50/60Hz.
230VAC operation is optional.)

Connections for
Thermocouple

Connections for
2-wire Pt 100/RTD

Connections for
3-wire Pt 100/RTD

2.4 TYPICAL WIRING DIAGRAMS

Figure 2-5. Wiring Heater with Alarms

(Two Mechanical Relays-Model CN9111A)

LOW ALARM OR WITHIN LIMITS SIGNAL

HIGH ALARM OR OUT OF LIMITS SIGNAL

ALARM
SIGNAL

SUPPLY

LOAD

5A (max

115V±15% 50-60 Hz

N

L

10

Figure 2-6. Heating and Cooling CN9121A [One DC Solid

State Relay Driver for Heating (SP1), 3A Mechanical Relay

for Cooling (SP2)]

Figure 2-7. Wiring of single output controller

CN9110A, CN9210A

NOTE

The CN9000A Series has been designed to be as immune as
possible to electrical interference. However, electrical noise
suppression may be required in some applications, particularly if
the output of the controller is firing a contactor or coil. A noise
suppression kit is available for use with 115VAC, OMEGA part
no. 1821-101 (consists of an RC network or metal oxide varistor
(MOV)).

TYPICAL WIRING FAST BLOW FUSE

L

N

COOLING WATER

3A (max)

SOLENOID
VALV E

LOAD

SSR output SP1

DC
INPUT
SSR

11

The CN9000A is pre-set for control parameters that are suitable for
many applications. The CN9000A can be operated with the default
(pre-set) settings, or the default settings can be overridden by
more appropriate control modes and parameters and/or enabling
of the second setpoint, by programming the CN9000A through the
front panel keys. Refer to Table 3-1, Controls and Indicators and
Table 3-4, Standard Functions .0 through .25.

The CN9000A allows the user to use autotune rather than the
default settings. In the autotune mode, the controller will attempt to
select the optimum PID settings.

Figure 3-1 and Table 3-1 illustrate the controls and indicators of
the CN9000A Series Controller.

SECTION 3 OPERATION

3.1 GENERAL CONSIDERATIONS

3.2 CONTROLS AND INDICATORS

Figure 3-1. CN9000A Front Panel-Controls and

Indicators

1

2

3

4

5

12

1 LED Display

2 Deviation Indicators

ITEM CONTROL/INDICATOR FUNCTION

TABLE 3-1

CONTROLS AND INDICATORS

The four-digit display normally
shows process temperature to 1°C
or 1°F resolution (for example,
197°F). However, if the CN9000A is
set for a tenth degree resolution (up
to 200°), the display shows the
temperatures in 0.1°C or 0.1°F
increments (for example, 197.3°F).
The display also shows the setpoint
value (flashing) and the Function
and Option numbers when in the
Set-Up Mode. Functions are the
available controller facilities (e.g.,
Derivative); Options are the
available values for each Function
(e.g., Derivative value-50 seconds).
When in the Set-Up Mode,
remember that the Function
numbers are on the RIGHT and the
Option numbers are on the LEFT of
the floating decimal point.

These three LEDs display the
difference between set point and
process temperatures in five steps,
each one representing 2% of full
scale value.

Flashing >3% above setpoint
Steady 1%-3% above setpoint
Steady ±1% about setpoint

Steady 1%-3% below setpoint
Flashing >3% below setpoint

The error indicator can also be
used in high resolution (±1% steps)
or low resolution (±4% steps).

13

TABLE 3-1 (Cont'd)

All three Error Indicator LEDs are
on when unit is in Manual or Park
Mode.

This LED is illuminated (green)
when the SP1 output is ON.

This LED is illuminated (red) when
the SP2 output is ON or OFF,
depending on mode of operation.
Refer to Function .31 in Table 3-6
for more details.

NOTE: The Parameter lock jumper is located under the lower front
bezel (discussed in Section 3.13).

ITEM CONTROL/INDICATOR FUNCTION

3 SP1 Output Indicator

4 SP2 Output Indicator

5 Control Keys

When pressed, displays the
SP1 temperature.

Pressed simultaneously
increases the SP1
temperature value.

Pressed simultaneously
decreases the SP1
temperature value.

Selects Set-Up Mode (entry
into the Function and
Option commands -refer to
Table 3-4). Display flashes,
normal temperature control
is maintained.

When in the Set-Up Mode,
increments the Function
and Option numbers up or
down.

When in Set-Up Mode,
changes the sub mode from
Functions to Options and
vice-versa.

★

★

★

P

or

★

14

For ease of use in normal applications, the CN9000A has been
pre-set with factory or Default settings (or Parameters). Section 3.5
discusses how to change these Default settings.

These pre-set Parameters enable the instrument to operate in the
PID Control Mode, with a single set point and slow cycle relay
output. This configuration should give good results where the
heater is adequately rated and the control sensor is located
reasonably close to it.

Default Settings (for SP1 only) are:

Proportional Time (Cycle Rate) = 20 seconds

Proportional Band (Gain) = 2.5% of Default full scale

Derivative Time (Rate) = 25 seconds

Integral Time (Reset) = 350 seconds

To use the controller with the Default settings requires only that the
correct Option number of the sensor. selected from Table 3-3,
Sensor Default Setpoint Range Table, be keyed into the
instrument. Also, check that the instrument is set to either °C or °F,
as required. (Refer to Function .22 in Table 3-4).

Also check that the desired control temperature is within
the Setpoint Default range. Refer to Section 3.4.2.

3.3 DEFAULT (PRE-SET) SETTINGS

3.4 GETTING STARTED

3.4.1 Selecting Sensor and Adjusting Setpoint

To operate unit:

Apply power. All LED segments will be briefly illuminated during
the self-check routine, then the display will request sensor
selection (from Table 3-3), i.e., the desired Option number for
Function .16, and will not respond to any further instructions until
this selection is made.

STEP ACTION DISPLAY

1 Install Unit. Power on. *Note: digits shown

1 Check that display reads: *bold are flashing

15

To key in the selected sensor
type Example: OPTION 2. K­Type thermocouple (page 31,
FN .16):
Check that the display reads:

To store the selected
thermocouple type into memory:
The display now reads the
sensor temperature, ex: ambient
= 70°F.

To key in the setpoint value:

to increase the setpoint:

to decrease the setpoint:
(It should be noted that the digit
rollover rate increases as arrow
keys are held.) ex: selected
setpoint = 250°F.

When the keys in (4) above are
released the unit will operate as
a normal temperature controller.
The square LED, is illuminated,
showing the SP1 output is
energized. To view the setpoint
temperature:

To re-adjust the setpoint value
at any time:

2

3

4

Refer to Table 3-2 for getting started with the commonly needed
Default settings of the control parameters. Changing from the
Default values will be covered in subsequent sections.

To operate with Autotune Settings, refer to Section 5.1
or Appendix B.

TABLE 3-2

OPERATION WITH DEFAULT SETTINGS

0.

1 6

2.

1 6

7 0

0

2

5 0

NOTE

If the display does not read 0.16 with the zero flashing, then the unit has already been
programmed with a sensor type. Refer to Table 3-4 and step through to Function .16 and set
proper sensor type. Note other functions may have to be changed as well.

Press Twice

Press P once

Press

Press ★

Repeat Step 4

Press

★ and hold

Press

16

When the Default settings are not suitable for your application,
the CN9000A can be tuned for optimum performance by the
adjustment of control Parameters. Section 5 will provide the
guidance needed to establish the appropriate settings.

Alternatively, the Autotune Option can be used to enable the
controllers microprocessor to attempt to calculate the optimum PID
Parameters. If you wish to use the Autotune Option, go to Section

5.1.2 and run Autotune AT.

The Default Range will limit the setpoint values. However, should a
particular application require the use of additional controller
features, for example: second setpoint output or tenth degree
resolution, refer to Section 3.5, Parameter Adjustments. The
instrument will indicate process temperatures over the full
linearized range shown in Table 3-4, Function .16. The Default
setpoint full scale (automatically selected by choice of sensor) may
be altered to any value within the linearized band (Table 3-4,
Function .16) by using the following procedure to adjust Function
.24. (Refer to Section 3.5 for more details on adjusting Functions).

Steps 1 through 6 are used to change the upper limit of the
setpoint range. Steps 7 through 10 are used to change the actual
setpoint and check the value.

Ensure that the setpoint range maximum is
compatible with safety requirements.

3.4.2 Changing the Allowable Setpoint Default
Range (Function .24)

CAUTION

Press the P button (use blunt tool since the P key is a
recessed button). The display shows "0.0" with the right most
digit (function number) flashing.

Press 24 times (or until the CN9000A displays "- -24" with
"24" flashing).

Press ★ to display the maximum allowable setpoint (for
example, "400" with "400" flashing).

1.

2.

3.

17

Press and hold in ★ Repeatedly press to increase value
(while pressing ★) Repeatedly press to decrease value
(while pressing ★).

Release ★ (and stop pressing or button).

Press the P button. The temperature is now displayed. The
upper limit of the allowable setpoint has now been changed.
The new allowable setpoint range can be checked by repeating
Steps 1, 2, 3.

Steps 1-6 are repeated in Section 3.5.1.3 for your convenience.

To change the setpoint to the desired value, press ★ and
hold in.

Press or to change the setpoint to the new value.

Release the ★ button. The temperature is now displayed.

Press the ★ button to check the setpoint value.

4.

5.

6.

7.

8.

9.

10

Note: If the Default setpoint range maximum is not suitable, it can
be increased or decreased to any desired value within the
linearized band

Fn .16 Min/Max
Option Type °C °F

1 J Iron-Constantan 0-400 32-800
2K CHROMEGA

®

ALOMEGA

®

0-400 32-800
3 N Nicrosil-Nisil 0-400 32-800
4R Pt-13% Rh/Pt 0-1600 32-1999
5S Pt-10% Rh1Pt 0-1600 32-1999
6T Copper-Constantan 0-250 32-500
7E CHROMEGA

®

-Constantan 0-500 32-1000
8J DIN Iron-Constantan 0-400 32-800
9 Pt100 100 Pt RTD( =0.00385) 0-200 32-400
10 B Pt-30% Rh/Pt-6% Rh 0-1600 32-1999

TABLE 3-3

SENSOR DEFAULT SETPOINT RANGE TABLE

NOTE

If an attempt is made to set the setpoint outside of the setpoint
range, the setpoint will be at the end of the range.

18

To change the CN9000A's Default Parameters to new parameter
settings, refer to this section and Section 3.6. All adjustable
parameters are held in memory.

There are two classes of Functions. Functions .0 through .25 are
STANDARD FUNCTIONS that are used more often and are easily
accessible to the user. Functions .26 through .50 are known as
ADVANCED FUNCTIONS. They are not designed to be changed
in the normal operation and should not be accessed except during
setup by qualified personnel.

NOTES

Because the selection of tenth degree resolution (Function .18
Option 1), °C/°F selection (Function .22), and setpoint range
adjustments influence the values of other settings and can have a
fundamental effect on control characteristics, it is important that,
when required, they should be made during initial set-up to avoid
the need for re-tuning.

If the temperature units scale (°C or °F) is changed, it is essential
to change the upper bezel to correspond to the units selected
(supplied with controller).

If you are having difficulty in adjusting the Options, refer to Section

3.13, Parameter Lock, since the unit may be in the locked mode.

Normal control is maintained with existing settings during
programming.

You need to know the Option code and Function number to set up
the CN9000A. For example, Option 0/Function .5 is SP1
Proportional Band of 2.5%.

Appendix A lists all the Function numbers and their names in a
short concise list.

Table 3-4 describes the Option details for Standard Functions
.0- .25.

Table 3-6 describes the Option details for Advanced Functions
.26 - .50.

3.5 PARAMETER ADJUSTMENTS (STANDARD FUNCTIONS)

3.5.1 Keying in Standard Functions

19

Ensure that the jumper behind
the lower front bezel is in the
Parameter Setting Position
(refer to Section 3.13). Note
Functions .1, .2, .3 are not
protected by the Parameter
Lock Jumper.

To convert the main display
from a temperature read-out
to the Function/Option Mode:

To change from Function .0 to
Function .16 (for example)

†

:

To change flashing Function
digit to Option digit:

To change from Option 0 to
Option 2 (for example)

††

:

To go to another Function:

When finished selecting the
Functions and Options (exiting
Program Mode), the
process temperature is
displayed. Control begins with
the new instructions now
entered into memory.

3.5.1.1 Example of Programming Functions. 0, .1,.2,.3,-.23

STEP ACTION DISPLAY

1

2

3

4

5

6

7

The following steps apply only to Functions .0,-.23. Section 3.6
covers more examples.

Press P

Option 0

Function .0

(flashing)

Press and Hold

until you see 0.16

Function (flashing)

Press ★

Option (flashing)

Press 2 times
Option (flashing)

Press ★ and

repeat steps 3-5 as

necessary

Press P

†

If using button, the Function number changes in the following sequence:

":0, .1, .2,.... .25” and back to “.0”. If using button, and the display shows

“.0" in Function place, the display changes to “.13” and then “.12, .11, ..., .0".

††

If using button, the Option number goes as high as 100. If using button,

the Option number goes down to 0.

0.

0

0.

1 6

0.

1 6

2.

1 6

T E M P

20

Ensure that the jumper behind
the lower front bezel is in the
Parameter Setting position
(the jumper should be on the
two right-most pins). Refer to
Section 3.13 if necessary.

To convert the main display
from a temperature read-out
to the Function/Option Mode:

To change from Function .0 to
Function .19:

To display Option:

To change Option value (refer
to Table 3-4); for example, 7:

To change to Function:

3.5.1.2 Example of Programming Functions .19 & .2 (SP2)

STEP ACTION DISPLAY

1

2

3

4

5

6

NOTE

When using SP2 as a tracking second setpoint (deviation from first
setpoint): Function .19, Options 1, 2, 3, or 7 will enable the second
setpoint and Function .2 is to be used to set the differential value
between the first and second setpoint.

Press P

Option 0

Function .0

(flashing)

Press

until you see 0.19

Function (flashing)

Press ★

Option (flashing)

Press to

increase (or

to decrease

depending on

Option value)

Flashing

Press ★ Function

(flashing)

0.

0

0.

1 9

0.

1 9

7.

1 9

7.

1 9

The following steps apply to Function .2. Function .19 must be set
up before setting Function .2.

21

3.5.1.3 Example of Programming Functions .24 and
Special Case of Function .2

To change from Function .19
to Function .2:

To change to Option Mode:

To change from Option
number; can go down to

-128° can go up to +127°,
since you selected option 7 in
Function .19. See the chart in
Function .2 to see the range
allowed. (For example, set to
100°).
To exit program mode (and
lock in parameters just set
up). Process temperature is
displayed.

Ensure that the jumper behind
the lower front bezel is in the
Parameter Setting position
(the jumper should be on the
two right-most pins). Refer to
Section 3.13 if necessary.

To convert the main display
from a temperature read-out
to the Function/Option Mode:

To change from Function .0 to
Function .24:

STEP ACTION DISPLAY

7

8

9

10

1

2

3

Repeatedly

Press

until you see 0.2

Function (flashing)

Press ★

Option (flashing)

Press to

increase value

Press P

Press P

Option

Function

(flashing)

Press 24

times

(flashing)

0.

2

0.

2

1 0 0.

2

T E M P

The following steps apply to Function .24 and Function .2 when
using SP2 as a full scale alarm or non-tracking second setpoint
(Function .19, Option 4 or 5).

- -

2 4

0.

0

22

To display maximum allowable
setpoint:

To increase or decrease the
setpoint:

To stop changing the setpoint:

To get back to process temp
(exit Function/Option Program
Mode). The upper limit of the
allowable setpoint is now
changed.

4

5

6

7

1.

2.

3.

Press ★

Press and hold

in ★ and

simultaneously

press to increase

or to decrease

value

Release fingers

Press P

STEP ACTION DISPLAY

Initial Configuration:

Function .16 must be selected first followed by settings in
Functions .17-.24 if required, then exit from Programming
Mode before making further selections. (Press P)
If 20 seconds is not a suitable Proportional Cycle Time for the
process, the correct value for Function .4 can be preselected
before Autotune (AT).

Protected Functions:

All Functions (except user settings Functions .1, .2 and .3)
may be locked into memory after setting to prevent
tampering. Put small jumper socket beneath lower bezel to
left pair of pins (Section 3.13).

Locating Standard Functions:

Function .0 is the Function starting point. From there, you can
go up or down.

3.5.1.4 Details of Standard Functions .0-.25

NOTES

Press to increase.
Press to decrease: display jumps directly to Function .13 to
access the higher Functions. Press and hold to scroll through

to Function .0.
Refer to Section 3.12 for ADVANCED FUNCTIONS.

4. 0 0

5. 0 0

T E M P