Omega Products CN742 User Manual

⁄16 DIN Temperature Controllers

CN740 Series

U Dual Display U Autotune U RS485 Communications U Free Software U Alarm Functions U Thermocouple/

RTD Inputs

U Output Status

The CN740 Series temperature controllers offer accurate temperature measurement and control in a

⁄16 DIN package. Designed for direct or reverse acting (cooling or heating) control, the CN740 Series can be programmed for simple ON/ OFF or more complex PID control functions. PID control is supported with manual or autotuning. Select relay, DC pulse or current output for control methods. The CN740 Series accepts a variety of thermocouple and RTD inputs. Process value and set-point value are displayed simultaneously on the large dual LED. Auto-tuning, engineering units (°F or °C), and alarm status is also indicated on the faceplate. Two alarm outputs are included on the unit with 12 preprogrammed alarm functions.

Speciﬁcations

Inputs: Thermocouple, RTD, see chart Display: Two 4-digit, 7 segment

6.35 mm H (0.25") LEDs PV: Red SV: Green Accuracy: ±0.25% span, ±1 least signiﬁcant digit Supply Voltage: 100 to 240 Vac, 50/60 Hz

Power Consumption: 5 VA max Operating Temperature: 0 to 50°C

(32 to 122°F)

Memory Backup: Nonvolatile memory Control Output Ratings:

Relay: SPST,

5A @ 250 Vac resistive

Voltage Pulse: 14 Vdc,

10 to -20% (max 40 mA)

Current: 4 to 20 mA

Panel punches

available, visit

omega.com/

panelpunches

Communication: RS485 MODBUS communication protocol

Panel Cut-Out: 45 mm Front Bezel: 48 mm Maximum Panel Thickness:

9.50 mm (0.375")

Panel Depth: 80 mm (3.15") Weight: 114 g (4 oz) Front Panel Rating: IP66

(1.89 in2)

(1.77 in2)

CN743

Input Types Range

100 to 1800°C (212 to 3272°F) 0 to 1700°C (32 to 3092°F) 0 to 1700°C (32 to 3092°F)

-200 to 1300°C (-328 to 2372°F) 0 to 600°C (32 to 1112°F)

-20 to 400°C (-4 to 752°F)

-200 to 400°C (-328 to 752°F)

-20 to 400°C (-4 to 752°F)

-100 to 850°C (-148 to 1562°F)

-200 to 1300°C (-328 to 2372°F)

-200 to 500°C (-328 to 932°F)

-200 to 800°C (-328 to 1472°F)

Pt100Ω RTD

-20 to 500°C (-4 to 932°F)

0 to 100°C (32 to 212°F)

-200 to 600°C (-328 to 1112°F)

To Order Visit omega.com/cn740_series for Pricing and Details

Model No. Description

CN743 Relay output, with RS485 communications

CN742 DC pulse output, with RS485 communications CN745

4 to 20 mA output, with RS485 communications*

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

* Free CN7-A software download available at omega.com/cn740_series

Comes complete with operator’s manual. Ordering Example: CN743, single output controller, mechanical relay, RS485 communications.

P-48