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1/16, 1/8, and 1/4 DIN Temperature and Process PID Controllers

CND3 Temperature and Process PID Controller


Item# CN16D3-RR-2U-CM-AC

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $120.72
10-24 $114.68
25-49 $108.65
50-99 $102.61
100-499 $96.58
500+ $90.54

In stock

Lead Time ( If not in Stock): 9 weeks

CND3 Temperature and Process PID Controller CN16D3-RR-2U-CM-AC CN16D3-RR-2U-CM-AC
  • Base Model Starting from $80
  • Fast Sampling Time 0.1 sec
  • Heater Disconnection Detection
  • All 1/4, 1/8, 1/16 DIN Models UL/cUL Certified
  • Connects to Various Thermocouples (B, E, J, K, L, N, R, S, T, U, TXK), Platinum RTD (PT100, JPT100)
  • Diversified Control Modes, Such as Self-Tuning, FUZZY, PID, ON/OFF
  • Dual Output Control Functions for Heating and Cooling
  • IP66 Protection Level and CE, ROHS Certified
  • Supports Standard MODBUS Protocol

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Measurement Type
Control Outputs
Form Factor
Number of Inputs
Input Type
Supply Voltage Type
Ramp and Soak
Display Type
Output Type

Product Specs

The New Omega temperature & process controller CND3 Series is designed with upgraded hardware and higher specifications to offer smart operation, fast response, and easy to use, plus user-friendly and user-defined function keys. With Self-Tuning PID and FUZZY temperature control functions, controllers can be installed in both open space or confined space applications and are capable of presenting a smooth temperature control curve.

Applications Include: Machinery for the printing, food packaging, solar panel manufacturing, and high-tech electronics industries.

    AC Power: 100 to 240 VAC, 50/60Hz, 5VA max
    DC Power: 24 VDC ±10%, 5W max
Display: 2 line by 4-digital, FSTN LCD negative image transmissive with backlight
    PV Display: Orange color backlight
    SV Display: Green color backlight
Certification and Compliances:
Safety: UL Recognized Component, File E243710 Vol. 1
EC Declaration LVD: EN61010-1; 2010
EMC: EN61326-1; 2013, EN61131-2; 2007, EN61000-6; 2005, EN61000-6-4; 2007/A1; 2011 IP66 Enclosure rating (face only), IEC60529 Edition 2.1 2001-02
Sample Rate: 100ms
Sensor Input Overvoltage Rating: 15 Vdc
RTD Inputs
    Type: 3 wires
    Excitation: 180µA
    Lead Resistance: 15OΩ max per wire
    Resolution: 1 or 0.1ºC for all type
Input Impedance: Approx. 4.7MΩ
Lead Resistance Effect: -0.3µV/Ω
Cold Junction Compensation: Less than 1.5ºC typical (max 2.0ºC) error over -10 to 50ºC ambient temperature range
Resolution: 1 or 0.1ºC for all type
Temperature Indication Accuracy:
±(0.3% of span, +1ºC) at 25ºC ambient after 20 minutes warm up. Including NIST conformity, cold junction effect, A/D conversion errors and linearization conformity

Process Indication Accuracy

*Depending on the rating of resistor 249Ω built in.

Remote Set-Point Input:
DC 0 to 10V Linear Voltage Input: Opening Jumper, resolution: 156µV/scale
DC4 20mA/0 to 20mA Input: Shorting Jumper, resolution: 0.63µA/scale
User Input: (Event Input)
    ON Resistance: 1KΩ Max.
    OFF Resistance: 100KΩ Min.
Response Time: 1 sec.
CT Input:
    Opening Jumper for Max 30A Measurement with 30A CT Ring, Resolution: 0.1A
    Shorting Jumper for Max 100A Measurement with 100A CT Ring, Resolution: 0.1A
Relay Output:
Type: Form A
Contact Rating: 5A @ 250 VAC or 30 VDC (Resistive Loading)
Pulse Voltage Output:
Rating: DC 12V ±10%, 40mA max with short protection.
Current Output:
DC 0 to 20mA/DC 4 to 20mA output, max resistive loading 500Ω
Resolution: 2.14µA/scale
Linear Voltage Output:
DC 0 to 10V Output, min Resistive Loading 1KΩ Resolution: 1.1mV/scale
Retransmission Output
DC 0 to 20mA/DC 4 to 20mA Output, Max Resistive Loading 500Ω Resolution: 2.09µA/scale

Rated 3 out of 5 by from Outstanding controller, abysmal manual. This would be a 5+ star product if it weren't for the extraordinarily poor manual. This is a complex controller with a tremendous number of features and settings that can handle very difficult process control problems easily...once you figure out how to use it. Technical support, while very well meaning and committed to helping, was of not much assistance as they also relied on the same manual, and generally suggested "reading the manual" as a way out. I wouldn't have called if I hadn't read the manual. I will admit, that I am old, but I have been using Omega controllers for decades with few problems. The descriptions in the manual for this excellent controller were abysmal.
Date published: 2021-06-26
Rated 4 out of 5 by from Powerful, Compact, bit tricky to learn Works well, good features, bit tricky to program until reading on line manual. The included paper document is not clear about the button press timings to activate the three different menus.. Increasing and decreasing temperatures a bit slow as numbers increment and decrement slow as you hold the button. Bubble membrane buttons are not so easy to use they are so small, and require significant pressure to activate. You have to hold the little head unit I installed them in from moving as you press. Seems to hold temperatures very nicely, display is nice. Overall it is a very nice feature packed unit, and fairly easy to use once you figure it out.
Date published: 2021-05-10
Rated 5 out of 5 by from good quality temperature controller This instrument does exactly what I want and is very stable. It is easy to program as long as you follow the flow chart provided.
Date published: 2021-04-07
Rated 1 out of 5 by from DON'T The unit was so hard to program that even with Omega engineers helping/instructing me over the phone I could not get it to work. After 4 calls and about 8 hours on the phone I gave up.
Date published: 2021-03-12
Rated 5 out of 5 by from Best low cost PID controller Great low cost PID controller and great engineering assistance.
Date published: 2021-02-26
Rated 5 out of 5 by from Great controlller Great product with excellent features. Fair and away the best controller for the price.
Date published: 2021-02-19
Rated 5 out of 5 by from Great device for the cost Great little device for the money. I used it to heat a battery at a specific ramp rate until failure. Once it ran through its autotune, it held VERY accurately to that ramp rate. It takes a bit to learn all the functions, but once you know the features you need regularly it becomes straight forward. It has a lot more functionality than I think I'd ever need.
Date published: 2020-12-24
Rated 5 out of 5 by from Nice price to feature ratio. Easy to use, very good cost to feature ratio. Ramp functions are very useful, would have been nice to have finer resolution on ramp timing, but it works quite well.
Date published: 2020-04-25
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What is the depth of the CN16D3-M-AC controller? Could not find the info in the manual or via chat.

Asked by: JFWp
Thank you for your inquiry! The depth needed for the panel cutout is 79.7mm. If you need the depth for the entire controller itself please reach out to temp@omega.com.
Answered by: Application Engineer JM
Date published: 2021-05-28

What the screen displays on start up does not match anything I see in the manual. Is there a set up guide? The manual does not include a set up guide.

Asked by: Robertf
Hi Rob, Thank you for the inquiry. Sorry, that we do not have strart up. Manual goes directly in to set up pages. Please see the manual page 3. Refers to the 3 modes Regulation, Operation, and Initial Setting modes and how to navigate between modes. https://assets.omega.com/manuals/M-CND3.pdf Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2021-03-07

The manual (p13) talks about setting the "control period". Exactly which parameter is this? Thank you

Asked by: sketel
The Control Period is the period of PID operation, if the control period is 10s, it means a PID operation is carried out every 10s. The result is then output to control the temperature. If the system heats up quickly, the control period shall not be set too long. For relay output, the lifespan of the relay shall be considered; a short period will shorten the lifespan of relay. Parameter "o1-H, o1-C, o2-H, o2-C"
Answered by: Application Engineer CB
Date published: 2021-08-26

Hi. CN16D3-L-AC PDI controller, What ore the outputs options and if more than one. How do I change the output mode.

Asked by: Maintenence
The specific model number CN16D3-L-AC has one Linear Voltage output only.
Answered by: Applications Engineer AB
Date published: 2020-08-27

Can the CN16D3-M-DC float since it is being suppled with 24 V DC?

Asked by: kls1
Thank you for your inquiry. This model operates on DC Power: 24 VDC ±10%, 5W max and does not require an earth ground connection.
Answered by: Application Engineer JB
Date published: 2021-09-21

Can the variables, in particular P, be negative?

Asked by: kls1
Thank you for your inquiry. No it can not be negative.
Answered by: Application Engineer CB
Date published: 2021-09-20

Do you have a heater contactor for running (2) 1500 Watt, 240 VAC heaters ? Need (2) contactors each rated for 10 or 15A, in an enclosure.

Asked by: Iceman
Hi Iceman, Thank you for the inquiry. Our control relays are currently limited to 10 A service; https://br.omega.com/omegaFiles/auto/pdf/XTRE_SERIES.pdf https://www.omega.com/en-us/communication-and-connectivity/interface-cards/electromechanical-relays/xtre-series/p/XTRE10B40A Best regards OMEGA
Answered by: AENorwalk
Date published: 2020-04-02

omega recommend a cm16d3-m-ac controller how do i hook up wires to retransmit temperature signal to a plc

Asked by: james o
The output of this controller is a 'powered output' so simply run terminal # 5 (+) to the Positive input of your PLC, and #4 (-) to the Negative input of your PLC.
Answered by: dfrisby88392
Date published: 2020-03-26
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