Omega C9000A SERIES 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
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mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no
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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
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36
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36
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38
39
44
45
45
46
47
47
48
48
49
49
49
50
51
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52
52
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54
57
57
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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
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63
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68
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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-Integral-
Derivative), 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 /2digit 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 non-
volatile 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
1Thermocouple
2-Wire RTD, or
Linear Millivolt Signal
23-Wire RTD
CODES for Output
No. 2
13A Mechanical
Relay
25VDC SSD*
CODES for Output No. 1
15A Mechanical Relay
25VDC SSD*
31A 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