Omega Products CN78020 User Manual

1

⁄16 DIN Temperature/Process

Controllers

with Fuzzy Logic

CN78000 Series

U Dual Display
U Autotune
U Universal Input
U Alarm Functions
U Fuzzy Logic
U Loop Break Protection
U Peak/Valley Indication
U Percent Output Indication
U Illuminated Keypad
U 4 Password Protected

Security Levels

U Optional Isolated PV

or SV Retransmission
Outputs

U Optional RS232/RS485

Communications

U Optional Low-Voltage

Power

U Free Software

The CN78000 Series controllers
are fully programmable compact
units with a variety of features that
include: universal input, self-tune
PID, fuzzy logic and dual 4-digit
LED displays for process and set
point values. User can select from
thermocouple, RTD, current or
voltage inputs AC SSR, relay, DC
pulse, and proportional current
outputs. A programmable alarm
(optional) can be reset automatically
or manually. The front panel is
waterproof and corrosion-resistant
(UL Type 4-X), making it ideal for
sanitary applications. Electronics
can be replaced without wiring
changes through a removable front
panel. Self-diagnostics, nonvolatile

CN78030

memory and selectable control
modes are all also available and
greatly increase productivity.
Four security levels are password
protected. For optimal PID control,
the on/off, P, PI or PID manual-tune
control functions can be selected,
or the controller will
autotune automatically.

The CN78000 offers an excellent
array of standard features as well
as peak/valley indication, percent
output indication, digital input filter,
among others.

Specifications

Selectable Inputs: Thermocouple,

RTD, DC voltage or current
Display: Two 4-digit LED displays,

7.62 mm (0.3") H
Display Resolution: 1° or 0.1° (sensor

dependent) or 1 count
Accuracy: ±0.25% of span ±1 least

significant digit
Supply Voltage: 100 to 240 Vac

nominal, 10 to 15%, 50 to 400 Hz single
phase; 132 to 240 Vdc, 10 to 20%

Operating Temperature Range:

-10 to 55°C (14 to 131°F)

Power Consumption: 5 Va minimum

P-35

CN78020

Control Output Ratings:

AC SSR: 2.0 A at 240 Vac resistive
at 25°C (77°F), de-rates to 1.0 A
at 55°C (130°F); minimum load of
100 mA

Relay: SPST, 3 A at 240 Vac
resistive, 1.5 A @ 240 Vac inductive

Pilot Duty Rating: 250 VA,
2 A @ 120 Vac, 1 A @ 240 Vac

Alarm Relay: SPST, 3 A @ 240 Vac

resistive,1.5 A @ 240 Vac inductive
Pilot Duty Rating: 240 Va,
2 A @ 120 Vac or 1 A @ 240 Vac

DC Pulse: 15 Vdc at 20 mA.

Proportional Current: 0 to 20 mAdc,

scalable, into 600 Ω maximum

Weight: 227 g (8 oz)
Front Panel Rating: Type 4X (IP66)
Serial Communications (Optional):

RS232 or RS485

Extended Warranty

Program

Panel punches

available, visit

omega.com/

panelpunches

OMEGACARE

SM

warranty program is available for
models shown on this page. Ask
your sales representative for full
details when placing an order.
OMEGACARE
labor and equivalent loaners.

SM

extended

SM

covers parts,

Inputs

Input Types Range

-129 to 1371°C (-200 to 2500°F)

-73 to 871°C (-100 to 1600°F)

-212 to 398°C (-350 to 750°F)

-73 to 982°C (-100 to 1800°F)

-73 to 1300°C (-100 to 2372°F)

-17 to 1760°C (0 to 3200°F)

-17 to 1760°C (0 to 3200°F)

24 to 1820°C (75 to 3308°F)

(J DIN) -73 to 871°C (-100 to 1600°F)

-17 to 2320°C (0 to 4208°F)

Pt100 RTD (0.00385) -200 to 875°C (-328 to 1607°F)
Pt100 RTD (0.00392) -200 to 875°C (-328 to 1607°F)
RTD, 120 Ω Nickel (0.00628) -80 to 320°C (-112 to 608°F)
RTD, Pt1000 (0.00385) -200 to 875°C (-328 to 1607°F)
0 to 20 mA*, 4 to 20 mA* -1999 to 9999
0 to 10 Vdc*, -10 to 10 Vdc*,

-10 to 10 mVdc*

Note: All thermocouple and RTD inputs can be set for 0.1° display. If temperature
goes above 999.9° or below -199.9°, the display will return to whole-degree resolution.

Process Input Types: The 0 to 20 mAdc, 4 to 20 mAdc, 0 to 10 Vdc, 2 to 10 Vdc,

*

and -10 to 10 mVdc inputs are fully scalable from a minimum of 100 counts span placed
anywhere within the range of -1999 to 9999. Decimal point position is adjustable from
the zero place (9999), tenths (999.9), hundredths (99.99) or thousandths (9.999).

-1999 to 9999

Dimensions: mm (inch)

Panel Cut-Out:

45 +0.6

(1.77 +0.02)

Max. Panel

Thickness

6.35 (0.25)

44.7

(51.76)

48

(1.89)

133

(5.24)

11.4

(0.45)

To Order Visit omega.com/cn78000 for Pricing and Details

Model Number Description

CN78030 Single output, relay
CN78130 Single output, relay and alarm
CN78133 Dual output, relay/relay and alarm
CN78020 Single output, DC pulse
CN78110 Single output, AC SSR and alarm
CN78111 Dual output, AC SSR/AC SSR and alarm
CN78050 Single output, 4 to 20 mA

Options

Ordering Suffix Description

-C4* RS485 communications**

-C2* RS232 communications**

-PV1* 0 to 20 mA isolated retransmission output

-PV2* 0 to 10 Vdc isolated retransmission output

-LV 12 to 24 Vdc/Vac power

Only 1 option can be ordered. ** Free CN7-A software download available on omega.com/cn78000

*

Accessories (Field Installable)
Model No. Description
CNQUENCHARC Noise suppression RC snubber (2 leads), 110 to 230 Vac
CN7-485-USB-1 RS485 to USB mini-node converter

Comes complete with operator’s manual.

Ordering Examples: CN78133-PV1, dual output controller, relay/relay and alarm, 0 to 20 mA isolated retransmission output.
CN78030, single output controller, relay.
OCW-3, OMEGACARESM extends standard 1-year warranty to a total of 4 years.

P

P-36