Omega Products CNi3222 User Manual

9‑segment display

1

⁄32 DIN Temperature, Process

and Strain PID Controllers

CNi32 Series

U High Accuracy: ±0.03%

Reading, 0.5°C (±0.9°F)

1

U First

with Totally Programmable
Color Displays Standard

U User-Friendly,

Simple to Configure

U Free Software,

ActiveX Controls

U Full Autotune PID Control
U Universal Inputs:

Thermocouple RTD,
Process Voltage/
Current, Strain

U First

Offering Both RS232
and RS485 Serial
Communications in
1 Instrument (Optional)

U First 1⁄32 DIN Instrument

with Built-in Excitation,
24 Vdc Standard

U Temperature Stability

±0.04°C/°C RTD and
±0.05°C/°C TC
@ 25°C (77°F)

U NEMA 4 (IP65) Front Bezel
U First 1⁄32 DIN Instrument

with Analog Output
Selectable as a
Control Output or as
Retransmission of
Process Variable

U 2 Control or Alarm

Outputs Optional:
DC Pulse, Solid State
Relays, Mechanical
Relays, Analog Voltage
and Current

U Front Removable and

Plug Connectors

⁄32 DIN Instrument

1

⁄32 DIN Instrument

The OMEGA® CNi32 is the iSeries
controller in the extremely compact
and increasingly popular 1⁄32 DIN size
(22.5 x 45 mm cutout). The CNi32 is
the most sophisticated and accurate
instrument available in the small

1

⁄32 DIN package, yet is still easy

to configure.

The CNi32 handles more
thermocouple, RTD, process
voltage and current inputs than
any other 1⁄32 DIN controller.

The CNi32 is the first 1⁄32 DIN
controller with built‑in excitation
for transmitters or other devices,
24 Vdc @ 25 mA.

The CNiS32 has built‑in excitation
for bridge transducers, 5 Vdc @
40 mA or 10 Vdc @ 60 mA. When
communications options are
installed, external excitation may
be used and ratiometric operation
maintained by connecting the
external excitation to the sense
leads. Both 4‑ or 6‑wire bridge
configurations are supported for
internal or external excitation.
Non‑ratiometric operation is supported
for voltage and current transducers

The iSeries displays feature unique 9‑segment LED characters, which greatly
improves alphanumeric representations. The 7‑segment LED characters found
on most instruments are adequate for presenting numbers, but not letters.

Words are easier to read with the unique
9‑segment LED characters on the iSeries,
which makes operating and programming
simpler and easier.

9-segment LED

Panel punches

available, visit

omega.com/

panelpunches

CNi3233, smaller than actual size.

and is also valuable in measuring
offset and millivolt output of bridge
devices during manufacturing and
calibration. This model also features
10‑point linearization which allows
the user to linearize the signal
input from extremely nonlinear
transducers of all kinds.

The CNi32 introduces a number of
unique features not yet found on any

1

other

⁄32 DIN instrument. The CNi32
is the first 1⁄32 DIN controller with a
totally programmable display that
can change color between GREEN,

AMBER, and RED at any setpoint

or alarm point.The unique 9‑segment
LED characters greatly improves
alphanumeric representations.

The CNi32 is the first 1⁄32 DIN
controller offering 2 SPDT Form C
relays, instead of the single throw
relays on typical 1⁄32 DIN controllers.

The CNi32 is the first to offer
both RS232 and RS422/485 serial
communications in 1 instrument
(C24 option). Both ASCII protocol
and modbus protocol are selectable
from the menu.

7‑segment display

9‑segment display

P-19P-19

DPi32-B-COVER front

25.4 (1.00)

panel button cover
supplied with each

unit, standard.

CNi3233, shown smaller
than actual size.

22.50 +0.61/-0 (0.89)

PANEL CUTOUT

Dimensions: mm (inch)

45.00 +0.61/-0.00 (1.89)

PANEL THICKNESS

1

/32 DIN

Options

Suffix Ordering Description

-AL Limit alarm version

-SM Simplified menu (on/

Network Options

-C24 Isolated RS232 and

-EIS-2B

Power Supply

-DC 12 to 36 Vac/dc,

Factory Setup

-FS Factory setup and

-FS(RTD-1N) Factory scaled for

-FS(RTD-2N) Factory scaled for

Software (Requires Network Option)
OPC-SERVER OPC server/driver

LICENSE software license

1

Excitation not available with “-DC”, “-C24” or

“-C4EI” options.

2

“-AL” option not available on models with

analog (0 to 10V/0 to 20 mA) output.

3

“-SM” option not available on CNiS strain/

process input models.

(simplified menu,
alarms only, no PID
control)

off control or alarms,
no PID)

RS485/422, 300 to

19.2 Kb

2

3

1

Industrial iServer
Microserver™,
serves 32 devices

1

24 Vac

configuration

MIL‑T‑7990B nickel
RTD input, 0 to 200°C
(32 to 392°F)

MIL‑T‑7990B nickel
RTD input, ‑40 to
300°C (‑40 to 572°F)

CNi3244, shown smaller
than actual size.

48.0

48.0 (1.89)

(1.89)

FRONT VIEW

6.4 MAX

0.6 MIN

48.0

48.0

48.0 (1.89)

(1.89)

(1.89)

REAR VIEW

25.4 (1.00)

25.4 (1.00)

To Order Visit omega.com/cni32_series for Pricing and Details

Model No. Output 1 Output 2
Temperature/Pressure Input
CNi3222 0.5 A SSR 0.5 A SSR
CNi3223 0.5 A SSR Relay
CNi3224 0.5 A SSR DC pulse
CNi3233 Relay Relay
CNi3242 DC pulse 0.5 A SSR
CNi3243 DC pulse Relay
CNi3244 DC pulse DC pulse
CNi3252 Analog 0.5 A SSR
CNi3253 Analog Relay
CNi3254 Analog DC pulse
Strain/Process Input
CNiS3222 0.5 A SSR 0.5 A SSR
CNiS3223 0.5 A SSR Relay
CNiS3224 0.5 A SSR DC pulse
CNiS3233 Relay Relay
CNiS3234 Relay DC pulse
CNiS3242 DC pulse 0.5 A SSR
CNiS3243 DC pulse Relay
CNiS3244 DC pulse DC pulse
CNiS3252 Analog 0.5 A SSR
CNiS3253 Analog Relay
CNiS3254 Analog DC pulse

Accessory

Model No. Description
DPP-1

Comes complete with DPi32-B-COVER and operator’s manual.
Ordering Examples: CNi3222-C24,

control and serial communications, both RS232 and RS485.
CNiS322-AL,

1

⁄32 DIN panel punch

1

DIN PID controller with 2 solid-state relays for PID

⁄

32

1

DIN strain/process controller, limit alarm version with SSR output.

⁄

32

P-20

P-20

25.4 (1.00)

P

P

Common Specifications

(All

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

Universal Temperature and
Process Input (DPi/CNi Models)

Accuracy: ±0.5°C temp; 0.03% rdg
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)

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 MΩ 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

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; p
300 to 19.2 Kb; complete programmable
setup capability; program to transmit current
display, alarm status, min/max, actual
measured input value and status

RS485: Addressable from 0 to 199
Connection: Screw terminals

rogrammable

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 Hz*,

110 to 375 Vdc, equivalent voltage
Low Voltage Power Option: 24 Vac

12 to 36 Vdc for i/8, i/16, 1/32; 20 to
36 Vdc for CNi8DH, CNi8DV, CNi16D
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
CNi8DV, CNi8DH, CNi16D:
0 to 50°C (32 to 122°F), 90% RH
non‑condensing (for UL only)
Protection:
CNi32, CNi16, CNi16D, CNi8C:

NEMA 4X/Type 4 (IP65) front bezel
CNi8, CNi8DH, CNi8DV:
NEMA 1/Type 1 front bezel
Approvals: UL, C‑UL, CE per
EN61010‑ 1:2001

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,

1

DIN

⁄

16

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.

1

⁄

8

1

⁄

32

DIN

DIN

at any

setpoint

PATENTED

Totally
Programmable
Color Displays

P

P

P-21

P-21