Omega CNi Specification

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Temperature, Process and Strain Controllers

CNi Series

CNi32, shown smaller

than actual size.

CNi16, shown smaller than actual size.

Universal Inputs

Accuracy at 25°C: ±0.5°C temp

nominal, 0.03% rdg ±0.03%

range process and strain

Totally Programmable

Color Displays (Visual Alarms)

User-Friendly, Simple to

Conﬁgure Free Software Full Autotune PID Control Embedded Internet

Connectivity Optional RS232 and RS485 Serial

Communications

Optional Built-In Excitation 2 Control/Alarm Outputs;

Choice of DC, Pulse, Solid

State Relays, Mechanical

Relays, Analog Voltage

and Current

U Output 3 Retransmission:

Isolated Analog Voltage

and Current Optional

U NEMA 4 (IP65) Front Bezel U Temperature Stability

±0.04°C/°C RTD and

±0.05°C/°C Thermocouple

@ 25°C (77°F)

U Front Removable and

Plug Connectors

U AC or DC Powered Units U Ratiometric Mode for

Strain Gages

U Programmable

Digital Filter

APPROVED

CNi8, shown smaller than actual size.

The OMEGA® iSeries is a family of microprocessor-based instruments offered in three true DIN sizes. All of the instruments share the same set-up and conﬁguration menu and method of operation, a tremendous time saver for integration of a large system. The iSeries family includes extremely accurate digital panel meters “DPi” and single loop PID controllers “CNi” that are simple to conﬁgure and use, while providing tremendous versatility and a wealth of powerful features.

The CNi Series covers a broad selection of transducer and transmitter inputs with 2 input models.

The Universal temperature and process instrument (CNi models) handles 10 common types of thermocouples, multiple RTDs and several process (DC) voltage and current ranges. This model also features built-in excitation, 24 Vdc @ 25 mA. With its wide choice of signal inputs, this model is an excellent choice for measuring or controlling temperature with a thermocouple, RTD, or 4 to 20 mA transmitter.

The strain and process instruments (CNiS models) measure inputs from load cells, pressure transducers, and most any strain gage sensor as well as process voltage and current ranges. The CNiS has built-in 5 or 10 Vdc excitation for bridge transducers, 5 Vdc @ 40 mA or 10 Vdc @ 60 mA (any excitation voltage between 5 and 24 Vdc is available by special order). This CNiS model supports 4- and 6-wire bridge communications, ratiometric measurements. The CNiS features fast and easy “in process” calibration/ scaling of the signal inputs to any engineering units. This model also features 10-point linearization which

M-9

CNi8DV, shown smaller

than actual size.

allows the user to linearize the signal input from extremely nonlinear transducers of all kinds.

Control Functions

The iSeries can control simple manual operation to ON-OFF and full Autotune PID control. (Selectable preset tune, adaptive tune, PID, PI, PD control modes.) The dual control outputs can be conﬁgured for a variety of independent control and alarm applications such as heat/ heat, heat/cool, heat/alarm, cool/ cool, cool/alarm or alarm/alarm. The ramp to setpoint feature allows the user to deﬁne the rate of rise to setpoint, minimizing thermal shock to the load during start-up. For applications that do not require PID control, just simpliﬁed programming, there are 2 options available: -AL Limit Alarm and -SM Simpliﬁed Menu ON-OFF control.

Programmable Color Display

The iSeries are 1⁄8, 1⁄16 and 1⁄32 DIN controllers featuring the big iSeries color-changing display. The digits are twice the size of typical 1⁄8 DIN panel meters. The iSeries feature the only LED displays that can be programmed to change color between GREEN,

AMBER, and RED.

Embedded Internet and Serial Communications

Featuring optional “embedded Internet” the iSeries connect directly to an Ethernet network and transmit data in standard TCP/IP packets, or serve Web pages over a LAN or the Internet. The iSeries are also available with serial communications. The user can select from the pushbutton menu between RS232, RS422, and RS485, with straightforward ASCII commands or MODBUS.

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To Order Visit omega.com/cni_series for Pricing and Details

Model No. Size/Cutout Input Type Output 1 Output 2 Other Features

CNi3222

CNi3223

CNi3224

CNi3233

CNi3242

CNi3243

CNi3244

CNi3252

CNi3253

CNi3254

CNi833

CNiS833

CNi8A33

CNi8C33

CNiS8C33

CNi8DH33

CNiS8DH33

CNi8DV33

CNiS8DV33

CNi1633

CNi16A33

CNi16D33

CNiS1633

CNiS16D33

Comes with complete operator’s manual.

Ordering Examples: CNi3233-C24-DC, 1⁄32 DIN temperature/process meter with two relay outputs plus RS232 and RS485 and 12 to 36 Vdc power supply.

CNi16D22-EIT, 1⁄16 DIN dual display temperature/process meter with two SSR outputs plus ethernet with embedded web server.

Ordering Sufﬁx

-AL

-SM

Networks Options

-EIT

-C24

-C4EIT

Power Supply

-DC

Factory Setup

-FS

-FS(RTD-1N)

-FS(RTD-2N)

Software (Requires Network Option) OPC-SERVER

LICENSE

*1 Ethernet options are not available for the CNi8A, CNi8C, CNi16, CNi16A or CNi32 controller. *2 “-DC”, “-C24”, and “-C4EIT” not available with excitation. *3 Analog output is not available with “-AL” units. *4 CNi8A0x-AL or CNi16A0x-AL contains 1 alarm and 1 analog retransmission. *5 “-SM” option not available on CNiS strain models.

⁄32 DIN Temperature/process 0.5 A SSR 0.5 A SSR —

⁄32 DIN Temperature/process 0.5 A SSR Relay —

⁄32 DIN Temperature/process 0.5 A SSR DC pulse —

⁄32 DIN Temperature/process Relay Relay —

⁄32 DIN Temperature/process DC pulse 0.5 A SSR —

⁄32 DIN Temperature/process DC pulse Relay —

⁄32 DIN Temperature/process DC pulse DC pulse —

⁄32 DIN Temperature/process Analog 0.5 A SSR —

⁄32 DIN Temperature/process Analog Relay —

⁄32 DIN Temperature/process Analog DC pulse —

⁄8 DIN Temperature/process Relay Relay —

⁄8 DIN Strain/process Relay Relay —

⁄8 DIN Temperature/process Relay Relay Analog Output

⁄8 DIN Temperature/process Relay Relay Compact Depth

⁄8 DIN Strain/process Relay Relay Compact Depth

⁄8 DIN Temperature/process Relay Relay Dual Display

⁄8 DIN Strain/process Relay Relay Dual Display

⁄8 DIN Temperature/process Relay Relay Dual Display

⁄8 DIN Strain/process Relay Relay Dual Display

⁄16 DIN Temperature/process Relay Relay —

⁄16 DIN Temperature/process Relay Relay Analog Output

⁄16 DIN Temperature/process Relay Relay Dual Display

⁄16 DIN Strain/process Relay Relay —

⁄16 DIN Strain/process Relay Relay Dual Display

Description

Limit alarm version (alarms only, no PID control)

Simpliﬁed menu (on/off control or alarms, no PID)

*3*4

Ethernet with embedded Web server

Isolated RS232 and RS485/422, 300 to 19.2 Kb

Ethernet with embedded Web server + isolated RS485/422 hub for up to 31 devices

12 to 36 Vdc, 24 Vac; 20 to 36 Vdc for dual display, ethernet, or isolated analog output option

Factory setup and conﬁguration

Customized "CNiS" model for MIL-T-7990B nickel RTD input, 0 to 200°C (32 to 392°F)

Customized "CNiS" model for MIL-T-7990B nickel RTD input, -40 to 300°C (-40 to 572°F)

OPC server/driver software license

M-10

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Common Specifications

(All

i/8, i/16, i/32 DIN)

Universal Temperature and Process Input (DPi/CNi Models)

Accuracy @ 25°C: ±0.5°C temp nominal; 0.03%

Resolution: 1° /0.1°; 10 µV process Temperature Stability:

RTD: 0.04°C/°C

TC @ 25°C (77°F): 0.05°C/°C

Cold Junction Compensation

Process: 50 ppm/°C NMRR: 60 dB CMRR: 120 dB A/D Conversion: Dual slope Reading Rate: 3 samples/s Digital Filter: Programmable Display: 4-digit 9-segment LED

10.2 mm (0.40"); i32, i16, i16D, i8DV 21 mm (0.83"); i8 10.2 mm (0.40") and 21 mm (0.83"); i8DH RED, GREEN, and AMBER programmable colors for process variable, setpoint and temperature units

Input Types: Thermocouple, RTD, analog voltage, analog current

Thermocouple Lead Resistance: 100 Ω max

Thermocouple Types (ITS 90):

J, K, T, E, R, S, B, C, N, L (J DIN) RTD Input (ITS 68): 100/500/1000 Ω

Pt sensor, 2-, 3- or 4-wire; 0.00385 or

0.00392 curve Voltage Input: 0 to 100 mV, 0 to 1V,

0 to 10 Vdc Input Impedance: 10 MΩ for 100 mV 1 MΩ for 1 or 10 Vdc

Current Input: 0 to 20 mA (5 Ω load) Conﬁguration: Single-ended Polarity: Unipolar Step Response: 0.7 sec for 99.9% Decimal Selection:

Temperature: None, 0.1 Process: None, 0.1, 0.01 or 0.001

Setpoint Adjustment:

-1999 to 9999 counts Span Adjustment:

0.001 to 9999 counts

Offset Adjustment: -1999 to 9999

Excitation (Not Included with Communication): 24 Vdc @ 25 mA

(not available for low-power option)

rdg ±0.03% range process and strain

Universal Strain and Process Input (DPiS/CNiS Models)

Accuracy: 0.03% reading Resolution: 10/1µV Temperature Stability: 50 ppm/°C NMRR: 60 dB CMRR: 120 dB A/D Conversion: Dual slope Reading Rate: 3 samples/s Digital Filter: Programmable Input Types: Analog voltage and current Voltage Input: 0 to 100 mVdc,

-100 mVdc to 1 Vdc, 0 to 10 Vdc

Input Impedance: 10 M

Ω for 100 mV;

1 MΩ for 1V or 10 Vdc

Current Input: 0 to 20 mA (5 Ω load) Linearization Points: Up to 10 Conﬁguration: Single-ended Polarity: Unipolar Step Response: 0.7 sec for 99.9% Decimal Selection: None, 0.1, 0.01

or 0.001

Setpoint Adjustment:

-1999 to 9999 counts

Span Adjustment: 0.001 to 9999 counts Offset Adjustment: -1999 to 9999 Excitation (Optional In Place Of

Communication): 5 Vdc @ 40 mA;

10 Vdc @ 60 mA

Control

Action: Reverse (heat) or direct (cool) Modes: Time and amplitude proportional

control; selectable manual or auto PID, proportional, proportional with integral, proportional with derivative and anti-reset Windup, and on/off

Rate: 0 to 399.9 s Reset: 0 to 3999 s Cycle Time: 1 to 199 s; set to 0 for on/off Gain: 0.5 to 100% of span; setpoints 1 or 2 Damping: 0000 to 0008 Soak: 00.00 to 99.59 (HH:MM), or OFF Ramp to Setpoint:

00.00 to 99.59 (HH:MM), or OFF Auto Tune: Operator initiated from

front panel

Control Output 1 and 2

Relay: 250 Vac or 30 Vdc @ 3 A (resistive

load); conﬁgurable for on/off, PID and ramp and soak

Output 1: SPDT, can be conﬁgured as alarm 1 output

Output 2: SPDT, can be conﬁgured as alarm 2 output

SSR: 20 to 265 Vac @ 0.05 to 0.5 A (resistive load); continuous

DC Pulse: Non-isolated; 10 Vdc @ 20 mA Analog Output (Output 1 Only):

Non-isolated, proportional 0 to 10 Vdc or 0 to 20 mA; 500 Ω max

Output 3 Retransmission

Isolated Analog Voltage and Current

Current: 10 V max @ 20 mA output

Voltage: 20 mA max for 0 to 10 V output

Network and Communications

Ethernet: Standards compliance

IEEE 802.3 10 Base-T Supported Protocols:

TCP/IP, ARP, HTTPGET RS232/RS422/RS485: Selectable from

menu; both ASCII and MODBUS protocol selectable from menu; programmable 300 to 19.2 Kb; complete programmable setup capability; program to transmit current display, alarm status, min/max, actual measured input value and status

M-11

RS485: Addressable from 0 to 199 Connection: Screw terminals

Alarm 1 and 2 (Programmable)

Type: Same as output 1 and 2 Operation: High/low, above/below,

band, latch/unlatch, normally open/ normally closed and process/deviation; front panel conﬁgurations

Analog Output (Programmable):

Non-isolated, retransmission 0 to 10 Vdc or 0 to 20 mA, 500 Ω max (output 1 only); accuracy is ± 1% of FS when following conditions are satisﬁed: input is not scaled below 1% of input FS, analog output is not scaled below 3% of output FS

General

Power: 90 to 240 Vac ±10%, 50 to 400

*, 110 to 375 Vdc, equivalent voltage

Hz Low Voltage Power Option: 24 Vac

12 to 36 Vdc for DPi/CNi/DPiS/CNiS; 20 to 36 Vdc for dual display, ethernet and isolated analog output from qualified safety approved source

**,

Isolation

Power to Input/Output: 2300 Vac

per 1 minute test For Low Voltage Power Option: 1500 Vac per 1 minute test Power to Relay/SSR Output: 2300 Vac per 1 minute test Relay/SSR to Relay/SSR Output: 2300 Vac per 1 minute test RS232/485 to Input/Output: 500 Vac per 1 minute test

Environmental Conditions:

All Models: 0 to 55°C (32 to 131°F)

90% RH non-condensing Dual Display Models: 0 to 50°C (32 to 122°F), 90% RH non-condensing (for UL only)

Protection:

DPi/CNi/DPiS/CNiS32, i16, i16D, i8C: NEMA 4X/Type 4 (IP65) front bezel DPi/CNi8, CNi8DH, i8DV: NEMA 1/Type 1 front bezel Approvals: UL, C-UL, UKCA, CE per EN61010- 1:2001, FM (temperature

units only)

Dimensions

i/8 Series: 48 H x 96 W x 127 mm D

(1.89 x 3.78 x 5") i/16 Series: 48 H x 48 W x 127 mm D (1.89 x 1.89 x 5") i/32 Series: 25.4 H x 48 W x 127 mm D (1.0 x 1.89 x 5")

Panel Cutout

i/8 Series: 45 H x 92 mm W

(1.772 x 3.622"), i/16 Series: 45 mm (1.772") square,

⁄16 DIN i/32 Series: 22.5 H x 45 mm W (0.886 x 1.772"),

Weight

i/8 Series: 295 g (0.65 lb) i/16 Series: 159 g (0.35 lb) i/32 Series: 127 g (0.28 lb)

No CE compliance above 60 Hz.

* ** Units can be powered safely with 24 Vac

power, but no certiﬁcation for CE/UL are claimed.

⁄8 DIN

⁄32 DIN