User’s Guide
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omega.com
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CN2110
0037-75429
Rev. 8-03
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CN 2110 Temperature Controller
Table of Contents
1–Quick Setup ................................................................................................... 1
Manual Sections
2–Introduction ................................................................................................... 2
3–Installation and Wiring .................................................................................. 4
4–Adjusting Setpoint and Configuration ......................................................... 12
5–Controller and Alarm Operation .................................................................. 16
6–Replacing Output Modules .......................................................................... 17
7–Calibration ................................................................................................... 19
8–Specifications .............................................................................................. 21
9–Troubleshooting ........................................................................................... 22
10–Omega Warranty and Return ..................................................................... 24
1.1 Dip Switch Settings .................................................................................. 1
1.2 Establishing the Set Point ......................................................................... 1
1.3 Adjusting the Set Point ............................................................................. 1
Illustrations
2.1 Front Panel Identification ......................................................................... 2
2.2 Typical Application .................................................................................. 3
2.3 Model Identification ................................................................................. 3
3.1 Default Dip Switch Settings ..................................................................... 4
3.2 Removing Mounting Collars .................................................................... 5
3.3 Mounting Dimensions .............................................................................. 6
3.4 Mounting the CN 2110 ............................................................................. 6
3.5 Wiring Terminal Identification ................................................................. 7
3.6 Thermocouple Connections with Shield .................................................. 8
3.7 Three-Wire RTD Connections with Shield............................................... 9
3.8 Two-Wire RTD Connections .................................................................... 9
3.9 Control Output Wiring–R1 and TI.......................................................... 10
3.10 Control Output Wiring–R20 ................................................................... 10
3.11 Control Output Wiring–DC .................................................................... 10
3.12 Control Output Wiring–T5 and T10 ....................................................... 11
3.13 90-260 VAC Instrument Power Connections ......................................... 11
3.14 Alarm Connections ................................................................................. 11
4.1 Establishing the Set Point ....................................................................... 12
4.2 Adjusting the Set Point ........................................................................... 12
4.3 Configuring CN 2110 ............................................................................. 13
4.4 Configuring CN 2110 ............................................................................. 13
4.5 Configuring CN 2110 ............................................................................. 13
4.6 Configuring CN 2110 ............................................................................. 13
4.7 Configuring CN 2110 ............................................................................. 13
4.8 Configuring CN 2110 ............................................................................. 13
6.1 Replacing Output Module ...................................................................... 18
CN 2110
iii
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CN 2110 Temperature Controller
Section 1—Quick Setup
After the controller is properly wired into the system, the user only
needs to verify the sensor input and control type and adjust the set point.
Setting the Sensor and Control Mode
Adjust the dip switches located on the bottom of the unit as shown in
Figure 1.1. The factory settings are J, TC, °F, and PI. It is simpler to
adjust the dip switch prior to mounting the CN 2110.
J
RTD
˚C
K
TC
˚F
PI
J
RTD
˚C
K
TC
˚F
PI
ONOF
ONOF
Figure 1.1
Dip Switch Settings
Adjusting the Set Point
. Apply power to the unit.
1
2. To adjust the set point on the CN 2110 Temperature Controller, press
and hold the Set Point button (see Figure 1.2). The Set Point light is
illuminated.
3. While still pressing the Set Point button, press either the or button
to adjust the set point to the desired value (see Figure 1.3). Holding
the or button increases the speed of the set point changes.
Load
°F
Load
°F
Alarm
°C
Alarm
°C
Temp
Set Point
Temp
Set Point
Set
Point
Set
Point
Figure 1.2
Establishing the Set Point
Figure 1.3
Adjusting the Set Point
The Controller is now operational with factory settings. For more
precise control, set up of the alarm, etc., see Section 4 – Adjusting Set
Point and Configuration.
Section 1–Quick Setup
CN 2110
1
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Section 2—Introduction
The CN 2110 Temperature controller offers simple setup, flexibility and
Description
control features in an attractive, compact design. The CN 2110 is housed
in a rugged, plastic 1/4 DIN package that only requires four inches
behind the mounting surface. Straightforward operation and easy-to-use
control features are major strengths of the CN 2110 controller.
Easy Three-Step Setup: The CN 2110 delivers exceptional process
temperature control. Your process is up and running after three easy setup
steps: 1) Select the sensor and control type, 2) Hook up the system and
3) Select the desired temperature.
Display
NEMA 4X Front Panel
(4 Green, 7-Segment LEDs)
Construction for
Actual process temperature displayed
hosedown applications
Output LEDs
Indicates control load
ON and alarm status
Green LEDs
Indicates °F or °C selected
for temperature display
Load
°F
Alarm
°C
Temp
Set Point
Temp and Set Point LEDs
Indicates actual or set point
temperature is displayed
Set
Point
• In Operation Mode,
pushbuttons adjust Set Point.
• In Setup Mode, pushbuttons
increase/decrease MENU
values.
Set Point Button
• In Operation Mode,
adjusts Set Point
• In Configuration Mode
with the or button,
serves as “Menu” button
Figure 2.1
Front Panel Identification
Your CN 2110 controller should arrive in good condition. Upon arrival,
inspect the packaging for any visible damage.
Inspection and
Unpacking
Unpack the controller and carefully inspect for product damage that may
have occurred during shipment. If the package or contents have been
damaged in shipping, you must file a claim with the delivery service.
The delivery service will not accept a claim from the shipper.
If not immediately installing the controller, store in a cool, dry environ-
ment in its original protective packaging. Temperature extremes and
excessive moisture can damage the instrument.
CN 2110
Section 2–Introduction
2
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CN 2110 Temperature Controller
Figure 2.2 shows the CN 2110 in a typical application.
Typical Application
Load
°F
Heater
Alarm
°C
Output
Temp
Set Point
Input
Set
Point
Sensor
Process
Alarm
Output
Figure 2.2
Typical Application
Before installation, please identify your controller model number. The
model number appears on a label on the side of the housing.
Model Identification
Section 2–Introduction
CN 2110
3
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Section 3—Installation and Wiring
Set the CN 2110 controller’s configuration via mechanical dip switches,
located on the bottom of the unit. Factory settings are J, TC, °F, and PI
Control. Switches are easier to set before mounting.
Sensor and Control
Type Selection
Switches
To change the switch settings, first disconnect all wiring and power
from the unit. Adjust switch settings as follows:
Setting
Options
Factory
Setting
Switch
Function
A
B
C
D
Thermocouple
Input Type
J or K
TC or RTD
°F or °C
J
TC
°F
PI
Temperature Units
Control Type
ON-OFF or PI
If input type is thermocouple, switch A selects either thermocouple type
J or K.
Switch B selects input type thermocouple or RTD (resistance tempera-
ture detector). Note: If RTD is selected, switch A is ignored.
Switch C selects temperature units °F or °C.
Switch D selects either PI (Proportional-Integral) or ON-OFF control.
J
RTD
˚C
K
TC
˚F
PI
J
RTD
˚C
K
TC
˚F
PI
ONOF
ONOF
Figure 3.1
Default Dip Switch Settings
CN 2110
Section 3–Installation and Wiring
4
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CN 2110 Temperature Controller
Two mounting collars securely hold the CN 2110 controller in the
mounting hole. Remove these mounting collars before installation.
Mounting
Removing Mounting Collars
1. To remove the rear collar, press the sides of the collar. This releases
holding tabs on the top and bottom of the collar.
2. Slide the collar off the back of the unit.
3. Slide the front collar off the back of the unit
Press In
Front Collar
Rear Collar
Holding
Tabs
Press In
Figure 3.2
Removing Mounting Collars
continued
CN 2110
Section 3–Installation and Wiring
5
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Mount the CN 2110
1. Cut out a 1/4 DIN, 3.6-inch (92mm) square hole in the mounting
panel.
Mounting
continued
2. Insert the unit into the mounting hole as shown in Figure 3.4.
3. Slide the front mounting collar onto the back of the controller.
4. Slide the rear mounting collar onto the back of the controller until the
holding tabs securely engage with the holding tab slots in the control-
ler housing (see Figure 3.4).
5. Tighten the four rear collar mounting screws until the unit is held
firmly in the panel. CAUTION: Do not overtighten.
The controller will now be held firmly in place.
Panel
Cutout
3.6
(92)
0.4
(10)
0.5
(12.7)
Load
°F
Alarm
°C
3.55
(90)
3.6
(92)
4.0
(101.6)
Temp
Set Point
Set
Point
4.0
(101.6)
4.0
(102)
3.6
(92)
Figure 3.3
Mounting Dimensions
Holding
Tabs Slots
Holding
Tabs
Front Collar
Rear Collar
Rear Collar
Mounting
Screw
Figure 3.4
Mounting the 2110
CN 2110
Section 3–Installation and Wiring
6
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CN 2110 Temperature Controller
Separate wire into bundles—When planning the system wiring,
Good Wiring
Practices
separate wiring into functionally similar bundles, e.g.
• Power leads
• Sensor leads (if power leads must cross sensor leads, they should
cross at a 90° angle)
• Output signal lines
Separate sources of electrical noise—Locate all sources of electrical
noise in your system, and separate these sources from the control
system, e.g.
• Motors
• Contacts
• Solenoids
Electrical noise can affect the function of any control system. When
driving a contactor coil or other inductive load, an appropriate rated AC
snubber circuit is recommended (Omega Part No. CNQUENCHARC).
Connect before power is applied—Make all electrical wiring connec-
tions to the back of the controller before power is applied to the unit.
Comply with regulations—WARNING: All wiring practices must
comply with local regulations. Failure to do so could result in damage
to controller and/or personal injury or death from electrical shock.
!
This instrument is intended for panel mounting and the terminals must
be enclosed within a panel. Use National Electric Code (NEC) Class 1
wiring for all terminals except the sensor terminals.
Check wiring decal—Check the wiring decal on the side of the unit to
verify the model number. The wiring decal shows the wiring termina-
tions. All wiring will be connected to the terminals on the back of the
instrument case. Specific wiring instructions for different input and
output types are given in this section. See also Figure 3.5.
Additional information—For sensor wiring practices, see “Sensor
Input Wiring”. For additional information on good wiring practice,
request IEEE Standard No. 518-1982 from IEEE, 345 East 47th St., New
Sensor Input
Wiring
Alarm Wiring
COM
NO
NC
Output
Wiring
(T5, T10)
Instrument
Power Wiring
Output Wiring
(R1, R20, DC, or T1)
Figure 3.5
Wiring Terminal Identification
Section 3–Installation and Wiring
CN 2110
7
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Sensor Wiring Notes
Sensor Input Wiring
For safety and best controller performance,
• Sensor leads (thermocouple and RTD) should not be run in the same
conduit as power wiring.
• Twisted pair, shielded wire is recommended for sensor connections.
• False temperature readings can occur if the sensor wire is exposed
to electrical noise.
• Ungrounded thermocouples are recommended.
• Thermocouple extension wire, if required, must be the same type
as the thermocouple (i.e. if a Type K thermocouple is used, then Type
K extension wire must be used.)
• Shielded thermocouple wire, if used, must have the shield
grounded at one end only, preferably at the shield ground terminal on
the controller as shown in Figure 3.6.
• Three-wire RTDs are recommended for greatest accuracy.
•
Standard shielded copper wire is recommended for RTD extensions.
Thermocouple Inputs
It is important to observe polarity (+,-) when connecting thermocouple
leadwires. ANSI color coding for the thermocouples used with this
instrument are
Thermocouple
Type
Material
Polarity (+)
Polarity (-)
J
K
iron/constantan
chromel/alumel
white
yellow
red
red
Make thermocouple wiring connections to terminals as shown in Figure
3.6.
TC +
TC -
NO
COM
NC
Shield Ground
Figure 3.6
Thermocouple Connections with Shield
CN 2110
Section 3–Installation and Wiring
8
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CN 2110 Temperature Controller
Three-Wire RTD Inputs
Sensor Input Wiring
IMPORTANT: When making the three-wire RTD input connection,
continued
make the resistance of all three extension leadwires equal by using the
same gauge and same length of wire for optimum accuracy. A three-wire
RTD will generally have two wires of the same color. Connect the same
colored wires to the RTDL connections. Connect the alternate colored
wire to the RTDH connection.
Make three-wire RTD connections to terminals as shown in Figure 3.7.
RTDH
RTDL
RTDL
NO
COM
NC
Shield Ground
Figure 3.7
Three-Wire RTD Connections with Shield
Two-Wire RTD Inputs
If using a two-wire RTD input, use heavier gauge leadwires to reduce
leadwire resistance. Any leadwire resistance adds directly to sensor
resistance, thus adding error to the process temperature measurement. It
is also necessary to jumper the two RTDL terminals on the instrument to
complete a two-wire hookup.
RTDH
RTDL
RTDL
NO
COM
NC
Figure 3.8
Two-Wire RTD Connections
Section 3–Installation and Wiring
CN 2110
9
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The following figures show the proper control output wiring for the
various CN 2110 configurations.
Control Output
Wiring
R1 (1 Amp Relay) and T1 (1 Amp, Solid State Relay)
Output Wiring
When driving a contactor coil or other inductive load, an appropriately
rated AC snubber circuit is recommended (Omega Part. No.
CNQUENCHARC), as shown in Figure 3.9.
COM
NO
NC
120/240
VAC
Fuse
Load
Neutral
Snubber
Figure 3.9
Control Output Wiring–R1 and T1
R20 (20 Amp Relay) Output Wiring
1/4” fast-on tabs are provided with the R20 output.
NO
COM
COM
NO
NC
120/240
VAC
Fuse
Load
NO
NC
COM
Neutral
Figure 3.10
Control Output Wiring–R20
DC (Solid State Relay Drive, 24Vdc, 40mA) Output Wiring
+
-
COM
NO
NC
Fuse
Load
+
120/240VAC
AC Neutral
SSR
4115 -
Figure 3.11
Control Output Wiring–DC
CN 2110
Section 3–Installation and Wiring
10
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CN 2110 Temperature Controller
T5 (Solid State Relay, 5 Amps) and
T10 (Solid State Relay, 10 Amps) Output Wiring
Control Output
Wiring
continued
Note: CN 2110 model T10 has a fan. CN 2110 model T5 does not have
a fan.
Fan
COM
NO
NC
120/240
VAC
Fuse
Load
Neutral
Figure 3.12
Control Output Wiring–T5 and T10
Make 120 or 240 VAC instrument power connections to terminals as
shown in Figure 3.13.
Instrument Power
Wiring
NO
COM
NC
120/240VAC
Neutral
Ground
Figure 3.13
90-260 VAC Instrument Power Connections
The Form C Relay Output is connected as shown in Figure 3.14.
Alarm Wiring
Alarm Out
C
NO NC
COM
NO
NC
COM NO NC
Figure 3.14
Alarm Connections
Section 3–Installation and Wiring
CN 2110
11
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Section 4—Adjusting Set Point and Configuration
1. Set selection switches (see Figure 3.1).
2. Apply power to the unit.
3. To adjust the set point on the CN 2110 Temperature Controller, press
and hold the Set Point button (see Figure 4.1). The Set Point light is
illuminated and the set point value is displayed.
Adjusting the
Set Point
4. While still pressing the Set Point button, press either the or button
to adjust the set point to the desired value (see Figure 4.2).
5. Release the Set Point button.
Load
°F
Load
°F
Alarm
°C
Alarm
°C
Temp
Set Point
Temp
Set Point
Set
Point
Set
Point
Figure 4.1
Establishing the Set Point
Figure 4.2
Adjusting the Set Point
While the CN 2110 default settings make it a simple setup controller for
most applications, additional programmable menus can be configured
through three front-panel pushbuttons.
Configuration
To access the user configuration menus,
1. Press and hold the and buttons. After three seconds the display
will begin to toggle between the current security code and LocH
(LOCK). The Temp and Set Point LEDs will turn on. See Figure 4.3.
2. Press the or button to adjust the value to the appropriate security
number (see Security Codes and Levels). Only the value is displayed
during adjustment. See Figure 4.4.
3. Press and hold the Set Point (
) button and press the or
buttons to scroll the configuration menus. The display will show the
name of the menu and then begin to toggle between the name and the
current value. See Figures 4.5 and 4.6.
CN 2110
Section 4–Adjusting Set Point and Configuration
12
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CN 2110 Temperature Controller
4. Press the or buttons to adjust the value (only the value is dis-
Configuration
played during adjustment). See Figure 4.7. The new value is set when
the or button is released.
continued
5. Press and hold the Set Point (
advance to the next menu. See Figure 4.8. (Holding the Set Point
) button and pressing the button moves through menus in the
) button and press the button to
(
opposite direction.)
Repeat steps 4 and 5 through the configuration menus.
Load
¡F
Load
¡F
Alarm
¡C
Alarm
¡C
Temp
Set Point
Temp
Set Point
Set
Point
Set
Point
Adjust lock
to 458
Figure 4.3
Figure 4.4
Load
¡F
Load
¡F
Alarm
¡C
Alarm
¡C
Temp
Set Point
Temp
Set Point
Set
Point
Set
Point
Continue
until SP is
displayed
Move to
next menu
Figure 4.6
Figure 4.5
C
Load
¡F
Load
°F
Alarm
¡C
Alarm
°C
Temp
Set Point
Temp
Set Point
Set
Point
Set
Point
Continue
Figure 4.7
Adjust the
set point
value
Figure 4.8
through the
configuration
menus
Exit Configuration
To exit configuration mode, press and hold both the and buttons for
three seconds to return to the operation mode.
Note: If no buttons are pressed for three minutes while in user configu-
ration mode, then the controller will exit user configuration and return to
the operation mode.
Section 4–Adjusting Set Point and Configuration
CN 2110
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To limit access to the user configuration interface, security codes are
assigned to different menu levels. Make security codes available to
operators, maintenance crew, supervisors, etc. according to what func-
tion level you want for each group. Security Level C is not recom-
mended for most users. Gain access to configuration menus using the
following codes.
Security Codes and
Levels
Security Level
Security Code
Function
A
All Values
Allows adjustment of
the Set Point
B
C
458
736
Basic menus
Calibration menus
The following configuration menus can be accessed through the user
interface (see Configuration, page 12).
Configuration
Menus
Menu
Code Function
Adjustable
Range
Factory
Default
Security
Level
Security Lock
0-999
458
A
A
Process Variable Display
Displays the actual process
temperature.
Read Only
°F or °C
N/A
Process Set Point Adjust
Adjusts the target process
temperature.
Sensor Range
0°F
A
B
°F or °C
Proportional Band
Temperature range above/below
set point where proportional
control is active. Most
1 to Sensor
Span Maximum
°F or °C
25
applications require a band
between 10 to 200°F. This menu
is active only when the dip switch
is set to “PI”
Automatic Reset
0.0 to 100.0
Repeats/Min.
0.1
B
Control feature that
automatically corrects for small
temperature offsets that occur in
proportional control. The higher
the setting, the faster the
correction occurs. A high setting
could cause overshoot during
start-up. A low setting will not
allow process temperature to
reach to set point quickly
enough. A setting of “0” turns off
automatic reset. This menu is
active only when the dip switch
is set to “PI”.
CN 2110
Section 4–Adjusting Set Point and Configuration
14
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CN 2110 Temperature Controller
Configuration
Menu
Adjustable
Range
Factory
Default
Security
Level
Code Function
Menus
continued
Cycle Time
The time for the output to
complete ON to OFF to ON
cycle. Used only with
proportional control. A fast
cycle time provides better
control, but can cause
.1 to 60.0 Sec.
Output R1,
R20 = 30
sec.
T1, T5, T10
DC = 1 sec.
B
premature wear to contactor or
other power switching devices.
Magnetic contactors should not
be switched at less than a 30
second cycle time. This menu is
active when the dip switch is
set to “PI”.
On/Off Dead Band
1 to 100 °F or °C 5 Foc
B
The range above/below set point
in which no control action takes
place. Determines at what
temperature the output switches
ON and OFF. For a 5°F dead
band, 2.5°F is above and below
the set point. This menu is active
when the dip switch is set to
“ONOF”.
Alarm Type
Off, Hi or Lo
OFF
B
B
Select high or low alarm.
Alarm Set Point
Temperature level that will
actuate the alarm.
Sensor Range
°F or °C
Span High
Alarm Dead Band
Difference of temperature from
alarm set point before an active
alarm resets.
0 to 100 °F or °C
5
B
B
Set Point Lower Limit
Lower limit to which set point
may be set without security
code access.
Sensor Range
°F or °C
Span Low
B
B
Set Point Upper Limit
Upper limit to which set point
may be set without security
code access. This prevents an
operator from setting the set
point temperature to a level
which would damage
Sensor Range
Span High
°F or °C
equipment or process.
Output Limit
Limits the percentage of output
that can be applied in
proportional control.
0 to 100%
100
For calibration menus (CoFF, dFLt, & CALS), see Section 7–Calibration
Section 4–Adjusting Set Point and Configuration
CN 2110
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Section 5—Control and Alarm Operation
The CN 2110 is shipped from the factory with PI (proportional/integral)
Control Operation
control. Proportional control actually determines the percent of heat
needed to control the process. The factory setting for the Proportional
Band is 25°F and the Automatic Reset (Integral) is set at 0.1 repeats/
minute. These settings will control many processes without any changes
to the controller. If the process is unstable or too sluggish, the Proportional
Band and Automatic Reset can be changed in the menu configuration.
Tuning PI Control
Adjust Proportional Band The objective of the proportional band adjust-
ment is to find the proportional band setting at which the process tempera-
ture stabilizes and does not oscillate. If the temperature display is oscillat-
ing, increase the Proportional Band (doubling the value) until the tempera-
ture display has stopped oscillating. To establish a quick response to control
upsets, adjust for the smallest band that provides stable control (does not
oscillate). Note: The temperature at this point may not be at set point, but
will be stable.
Adjust Automatic Reset (Integral) The Automatic Reset (Integral)
automatically removes the offset between process temperature and set
point. If the process is too sluggish in approaching set point, double the
automatic reset. Too much automatic reset will make a process unstable.
Cycle Time Cycle time setting determines how often to switch the output
to the heater. For example, if the cycle time is 1 second and the CN 2110
needs a 75% output, the output will be on for 3/4 of a second and off 1/4
of a second. Units with relay control outputs (R1 or R20) are shipped with
a 30-second cycle time. Units with solid state relays or solid state relay
drives (T1, T5, T10, or DC) are shipped with a 1-second cycle time.
An alarm relay output is optional on the CN 2110. An alarm can help
protect the process when a too high or too low temperature occurs.
Alarm Operation
(optional)
High Alarm: This alarm is a high absolute alarm that actuates when the
process temperature is equal to or greater than the alarm set point. For
example, if the high alarm set point is 500°F, the alarm will always actuate
when the process temperature reaches 500°F.
Low Alarm: The low absolute alarm actuates when the process temperature
is equal to or less than the alarm set point. The low alarm features a power-
up inhibit to prevent undesirable alarms during process start up. After the
unit reaches control set point, the low alarm will respond.
Alarm Dead Band: The alarm relay de-energizes (resets) when the tem-
perature crosses out of the alarm dead band. For example, if the high alarm
is set to 500°F and the alarm dead band is 5°F, the alarm condition will not
reset until the process temperature reaches 495°F.
To enable the alarm relay, select either high or low alarm type and set the
alarm set point. An alarm condition is indicated when the Alarm light to
the left of the display illuminates. Alarm type, set point, and dead band are
selectable through the user configuration interface.
CN 2110
Section 5–Control and Alarm Operation
16
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CN 2110 Temperature Controller
Section 6—Replacing Output Modules
The CN 2110 Temperature Controller was shipped with the output
modules installed as ordered. The 10A Solid State Relay and 20A
Mechanical Relay output cards control small cartridge heater or strip
heater loads directly, eliminating the need for a remote contactor or solid
state relay. If a larger load is required, the CN 2110 can be configured
with a 1A Pilot Duty Relay or Solid State Relay Drive.
The CN 2110 may be optionally configured with a 5A/120V Alarm
Relay. Alternate modules, configured with or without alarm, can be
installed as needs change.
Control and alarm outputs can be changed in the field.
Output Module options are as follows
Module Option
Descriptions
Factory
Default
Load/Sourcing
Specification
Part No
Part No.
Description
Cycle Time w/o Alarm w/ Alarm
2110X-R1-AL
R1 Relay
Form A contact, SPST,
N.O. 1.0 Amp at 120/240
VAC resistive load
30 sec.
30 sec.
2110X-R1
R20 Relay
Form A contact, SPST,
N.O. 20 Amp at 240 VAC,
28 VDC resistive load
2110X-R20 2110X-R20-AL
2110X-DC-AL
2110X-T1-AL
2110X-T5-AL
DC SSR Drive 24 VDC nominal at 40
mA
1 sec.
1 sec.
1 sec.
2110X-DC
2110X-T1
2110X-T5
T1 TRIAC
1 amp continuous, 10
Amp in-rush 120/240 VAC
T5 Solid State 120/240 VAC, 5 Amp @
Power
Controller
40°C ambient
T10 Solid State 120/240 VAC, 10 Amp @
1 sec.
Power
Controller
40°C ambient with built-
in cooling fan mounted
on rear of housing
2110X-T10-AL
(Fan Kit)
2110X-T10
(Fan Kit)
Module Installation
WARNING: Remove power from the controller before changing
the output module. Failure to do so could cause damage to
controller and/or personal injury or death from electrical shock.
When handling output modules, be careful to guard the module against
static discharge. Follow the steps below to remove an existing output
module and replace it with a new module.
!
Removal
1. Remove power from the controller.
2. Remove all terminal connections.
continued
Section 6–Replacing Output Modules
CN 2110
17
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3. Remove the back cover by lifting four housing clips on the controller.
This releases the back cover. Then pull cover straight off the controller.
4. Gently pry around the sides to loosen and remove the module. Pull
module straight out to avoid bending pin connections.
Module Installation
continued
WARNING: Do not remove module by the handling components
on the module board. This could damage the module.
!
When removing an T10 output module (SSR with fan), a cable
connects the fan to the far right center of the T10 board. Gently
disconnect the cable from the connector on the output board. Do not
remove the fan from the back cover. This is a single assembly.
For the T10 output module, reconnect the fan cable to the connector
on the far right center of the module. Tuck the cable around the
heatsink.
Replacement
1. Line up pins on the controller with pin connections on either side of
the module and push the new module into place.
2. Reinstall the back cover.
Controller
Pin
Module
Housing Clip
Back Cover
Figure 6.1
Replacing Output Module
Auto Cycle Time
The Control Output Modules have a default cycle time of 1 second (fast
switching) or 30 seconds (slow switching) (See table on page 17). After
replacing a control output, the CN 2110 verifies at power up if a slow or
fast cycle time output has been installed. If an output with a different
default cycle time is installed, the CN 2110 will change the cycle time to
the new device’s default. If the user has changed the cycle time in configu-
ration, the CN 2110 retains this value unless an output with a different
default cycle time has been installed.
CN 2110
Section 6–Replacing Output Modules
18
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CN 2110 Temperature Controller
Section 7—Calibration
Calibration offset offsets the displayed value. Usually, this option is
Calibration Offset
used to match displays of two different instruments that are measuring
the same temperature, but are displaying different temperatures due to
different thermocouple accuracy or placement of the thermocouples.
Caution is advised when adding an offset to the display, since the actual
sensed temperature will not be displayed.
Calibration offset (coFF) is available in the configuration mode, but
only displays if the security lock (LocH) is set to 736.
This option allow you to return the controller’s configuration parameters
back to the factory default values (except for the LocH menu). This
parameter could be used when moving a unit from one application to
another to give the operator an easy place to begin setup of the unit.
Factory Default
Recovery
Factory Default Recovery is performed in the Configuration Mode,
menu dFLt. The security lock (LocH) must be set to 736 to perform a
factory default recovery.
To reestablish the factory default values:
1. Disconnect load power.
2. In the Configuration Mode, set security level (LocH) to 736.
3. Go to menu dFLt and press . The controller will automatically
reset the values. When the display cycles from rEdy to donE, the
recovery is complete.
The CN 2110 Temperature Controller is factory calibrated before
shipment. Recalibration is not needed when you receive and install the
product. Periodic calibration checks or adjustments should not be
necessary under normal operating conditions. Omega recommends you
recalibrate the controller if all instruments in your facility are periodi-
cally calibrated to a known standard.
Calibration
The CN 2110 always retains the original factory calibration values for
the J, K, and RTD inputs. In an application, only one of these sensor
inputs will be used. The CN 2110 only can retain manual calibration for
a single sensor.
continued
Section 7–Calibration
CN 2110
19
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Calibration Notes:
Calibration
When calibrating the CN 2110
continued
1. You must have a sensor simulator to calibrate the CN 2110 controller.
Substitute a precision sensor simulator (Thermocouple simulator or
resistance simulator box) for sensor inputs.
2. Disconnect load power to prevent damage to the process or load.
3. Calibrate RTD inputs using copper (Cu) wire. Calibrate thermo-
couple inputs using thermocouple extension wire of the same type as
the thermocouple you are calibrating.
4. Allow the controller to warm up with the appropriate sensor simula-
tor connected for at least one hour prior to calibration.
5. To access the calibration menu, you need level C (736) security.
Sensor Calibration:
1. Set the CN 2110 selection switch to RTD or TC. If TC is selected,
then set the selection switch to J or K.
2. Connect the sensor simulator to the sensor input terminals.
3. Set the simulator to the low value of the sensor selected J TC
(-100°F), K TC (-100°F), RTD (-200°F or 48.46Ω).
4. Go to the CALS parameter on the CN 2110. The display will toggle
between CALS and inLo.
5. Wait 30 seconds for the electronics to fully stabilize. Press . Dashes
will appear in the display while the controller calibrates the low end
of span.
6. When the controller prompts inHi in the display, adjust the sensor
simulator to the high end of the selected sensor span.
J TC (1400°F), K TC (2400°F), RTD (1000°F or 293.49Ω).
7. Wait 30 seconds for the electronics to fully stabilize. Press . Dashes
will appear in the display while the controller calibrates the high end
of span. When finished, the controller will display donE.
8. Calibration is complete.
This procedure allows you to return the controller to its factory calibra-
tion settings in the event it is severely out of calibration due to poor
technique or unauthorized calibration.
Factory Calibration
Recovery
1. Disconnect load power.
2. Cycle the sensor selection switch twice from its original position (TC
or RTD) to the opposite position (RTD or TC) and back to its original
position. This brings back the factory calibration and deletes the
manual calibration settings.
CN 2110
Section 7–Calibration
20
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CN 2110 Temperature Controller
Section 8—Specifications
Control Modes..................................... ON/OFF; PI—Proportional with integral
Control Adjustments
Proportional Band.......................... 1 to sensor span maximum
Automatic Reset ............................ 0.0 to 100.0 repeats/minute
Cycle Time .................................... 0.1 to 60.0 seconds
On/Off Deadband .......................... 1° to 100°F or °C
Set Point Upper Limit.................... sensor range °F or °C
Set Point Lower Limit ................... sensor range °F or °C
Output Limit .................................. 0 to 100%
Alarm Adjustments
Type ............................................... Absolute High or Low
Set Point ........................................ Sensor range °F or °C
Alarm Dead Band .......................... 0° to 100°F or °C
Control/Alarm Outputs
Relay (R1) ..................................... 1 Amp Form A, 120/240VAC
Relay (R20) ................................... Form A, 120/240VAC resistive loads at 30 sec. cycle time
20 Amps, 500,000 Operations
15 Amps, 1 Million Operations
10 Amps, 5 Million Operations
5 Amps, 5 Million Operations
Solid State Relay Drive (DC) ........ 24VDC at 40mA
Solid State Relay (T1) ................... 1A Triac, up to 240VAC
Solid State Relay (T5) ................... 5A, up to 240VAC at 40°C
Solid State Relay (T10) ................. 10A, up to 240VAC at 40°C
Alarm ............................................. Form C, Relay 5 Amps at 120VAC,
2.5A at 240VAC
Sensor Input ........................................ Switch selectable; J,K Thermocouple; RTD
Input Update Rate .............................. Four samples per second
Input Specifications ........................... Range °F
J TC ............................................... -100 to 1400°F
K TC .............................................. -100 to 2400°F
100Ω Pt RTD (a=.00385) .............. -200 to 1000°F
Range °C
-73 to 760°C
-73 to 1316°C
-128 to 538°C
Accuracy at 77°F ambient
0.2% Span +/-1 least significant digit
0.2% Span +/-1 least significant digit
0.2% Span +/-1 least significant digit
Readout Stability
J and K TC ..................................... +/-1°F per 10°F change in ambient temperature
RTD ............................................... +/-0.5°F per 10°F change in ambient temperature
Open Sensor and
Out-of-Range Conditions.................. Displays “SEnS”, Control output 0%
Instrument Power ............................... 90 to 260VAC Less than 10 VA
Operating Environment...................... 0° to 65°C (32° to 150°F)
Dimensions
Overall ........................................... 4.0 x 4.0 x 4.0 inches (102 mm)
Depth Behind Display ................... 3.6 inches (92 mm)
Front Panel Projection ................... 0.4 inches (10 mm)
Panel Cutout .................................. 3.6 x 3.6 inches (92 mm x 92 mm)
Enclosure Material ............................. High temp ABS plastic rated for 0° to 175°F
Front Panel
NEMA 4X construction, requires surface finish not rougher
than 0.000032 inch
Influence of Line Voltage Variation .... +/-0.1% of sensor span per 10% change in
nominal line voltage
Noise Rejection
Common Mode Noise ................... Less than 2°F with 240 VAC, 60 Hz applied from sensor
input to earth ground
Series Mode Noise......................... Less than 2°F with 100mV, peak to peak series mode noise
RFI ................................................. Typically less than 0.5% of sensor span at distance
of 1 meter (3.1 feet) from a transmitter of 4W at 464MHz
Sensor Leadwire Effect
J Thermocouple ............................. +1°F for 1000 feet of 18 AWG thermocouple extension wire
K Thermocouple ............................ +2°F for 1000 feet of 18 AWG thermocouple extension wire
RTD
+/-0.1% of sensor span per 20Ω balanced leadwire resistance
(20Ω is the total loop resistance)
Section 8–Specifications
CN 2110
21
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Section 9—Troubleshooting
The following Troubleshooting Guide offers simple solutions to com-
mon problems and explains the CN 2110’s Error Messages. Review this
section for a possible solution to your problem before contacting
Omega.
Note: For each symptom, perform correction steps in the order listed.
Symptom
Probable Cause
Correction Steps
Power applied, display 1. No power applied
1. Check power wiring
and fusing
does not light, and
controller does not
2. External fuse open
2. Power down and
repower up
function
Display alternates
between HI and
SENS, CN 2110
disables control
output
1. Open sensor
1. Check sensor wiring
2. Out of calibration
2. Check selection
switches
3. To verify that controller
is at fault, remove the
thermocouple and place
a jumper across the
sensor terminals of the
CN 2110. If the display
reads approximately
ambient, then the
sensor is open. Replace
the thermocouple.
4. See Section 7–Calibra-
tion
Process does not
heat up
1. No power being
applied to the load
1. Verify Load LED is ON
2. Verify the heater or fuse
is not open
2. Load fuse open
3. Verify output limit is set
to 100%
4. Verify set point is
greater than process
temperature
5. Verify output wiring
Erratic operation
1. Intermittent sensor
connections
1. Check sensor wiring or
substitute sensor
simulator
2. Controller failure
(internal electronics) 2. Power down and
repower up
3. External electrical
noise
3. Contact Omega
CN 2110
Section 9–Troubleshooting
22
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CN 2110 Temperature Controller
Troubleshooting
Symptom
Probable Cause
Correction Steps
continued
Process not
in control
1. Incorrect settings
1. Check Proportional
Band setting and
Automatic Reset
setting
2. Thermocouple
Wiring
2. Check thermocouple
polarity
1. Severe electrical
noise
1. Separate sensor wiring
from other wiring
Instrument continu-
ally goes through
power-up reset
2. Apply power line filter
3. Contact Omega
Display reads
FAn FAIL, CN
2110 disables
control output
1. Fan for T10 output
has failed
1. Check for and clear any
obstruction in fan, then
power unit up and
check display
2. Discontinue operation,
replace fan assembly,
or return to Omega for
replacement
Section 9–Troubleshooting
CN 2110
23
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MADE
IN
USA
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month
grace period to the normal one (1) year product warranty to cover handling and shipping time. This
ensures that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components which wear are not warranted, including but not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any
damages that result from the use of its products in accordance with information provided by
OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be
as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE,
AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN
(AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return
package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
FOR WARRANTY RETURNS, please have the
following information available BEFORE
contacting OMEGA:
FOR NON-WARRANTY REPAIRS, consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
relative to the product.
2. Model and serial number of the product, and
3. Repair instructions and/or specific problems
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2002 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.
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Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
TEMPERATURE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
PRESSURE, STRAIN AND FORCE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories
FLOW/LEVEL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/ Paddlewheel Systems
Totalizers & Batch Controllers
pH/CONDUCTIVITY
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ pH Electrodes, Testers & Accessories
Benchtop/ Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment
DATA ACQUISITION
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Data Acquisition & Engineering Software
Communications-Based Acquisition Systems
Plug-in Cards for Apple, IBM & Compatibles
Datalogging Systems
Recorders, Printers & Plotters
HEATERS
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Metering & Control Instrumentation
Refractometers
Pumps & Tubing
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments
0037-75429
M-3776/0202
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