Chromalox CX224 Catalog Page

Controls

CX224

12-Channel
Temperature Monitor

(cont’d.)

Stocked Items

Part Number PCN

CX224-A1A 309913

CX224-A1B 309921

Ordering Information

Complete the model number using the matrix
provided.

Accessories

Part

Number Description

AC102734 Communications package.

Includes isoated RS232 to RS485
converter, power supply for con­verter, 6' (1.8 m) serial cable and
DB25 to DB9 Adapter

TI241 8-Channel thermocouple isolator.

Electrically isolates grounded ther­mocouples for use with CX224

Specifications

Input:

Standard Input Types:

(Platinum/100 W/0.00392 W/W/°C)

-200 to 700°C: PB
(Platinum/100 W/0.00391 W/W/°C)

-200 to 850°C: PD/PE
(Platinum/100 W/0.00385 W/W/°C)

-200 to 600°C: PF
(Platinum/1000 W/0.00385 W/W/°C)

-80 to 260°C: NA
(Nickel/120 W/0.00672 W/W/°C)

-100 to 260°C: CA
(Copper/10 W/0.00427 W/W/°C)

-270 to 1000°C: Type E

-200 to 1200°C: Type J

-270 to 1150°C: Type K

-270 to 400°C: Type T

4 to 20 mA current loop: Pressure (PSI, Bar),
Humidity (%), Temperature (°F, °C), Vibration

(G),andprocessvariable(mA,VDC)

Note: 4 to 20 mA inputs must be linear with
respect to the measured variable.

Input Scan Rate: 1.5 seconds maximum.
Input Fault Detection:

Options for ignoring, sounding

Output:

Relays: Form C, SPDT 10 A @ 250 VAC/24

CX224 12-Temperature Monitor
Code Power supply
A 85-240 VAC @ 50/60 Hz / 110-370 VDC
Code Output

1 Relays
2 Logic (5 VDC)

Code Interface

A RS232
B RS485

CX224 - A 1 A Typical Model Number

The CX224 monitor comes complete with CX224 software.

1 to 12 RTDs (2 or 3-wire), thermo­couples, or 4 to 20 mA current loops.
Accepts any combination of input types.

RTD: -200 to 700°C: PA

Thermocouple (grounded models require TI241):

alarm, or tripping relays associ­ated with the failed sensor. Other
zones are unaffected.

24 independent trip points (2 per
channel): 5 relays, one relay is
intended for use as an alarm func
tion (but can be configured as a
trip point), and one internal audible
alarm. Alarm may be programmed
to sound when selected relays trip.
Logic output option is available for
controlling external SSRs or send
ing a signal to another devic

VDC resistive load; 10 A make
current; 2500 VA breaking capac­ity, ¼ HP at 120 VAC motor load.

e.

Trip point Hysteresis (deadband):

Display: 20×4 line backlit LCD. 0.1°C or

Accuracy: 2°C (3°F) in 0 to 60°C (32 to

Supply Power:

Power Loss Protection:

Trip points and program pa-

Keyboard: 4 membrane type keys with

Serial Interface:

Programming:

Firmware Fault Protection:

Watchdog resets microproces-

Enclosure: Steel case; NEMA 4 front panel

Connections:

-

Leadwire Resistance Compensation:

Dimensions:
Mounting: Panel mount enclosure. Cutout

-

Weight: 3.8 lbs. (1.72 kg.)
Agency Approvals: UL: 508

Programmable from 0 to 20 (°C or °F).

0.1°F resolution. Front panel LEDs
indicate relay and alarm status

158°F) ambient, over entire range
of the input

85 to 240 VAC @ 50/60 Hz. or

110 to 370 VDC, 5 watts max.

rameters stored in non-volatile
memory. Normal operation
resumes when power is restored.

audible feedback.

RS485 or RS232 (Modbus protocol).

Programmable from front panel
or via RS485 or RS232 interface
using Modbus protocol. PC soft
ware is included for data logging,
commissioning, and configura­tion. Program settings may be
password protected

sor if it fails to perform program
sequence

Ambient Temperature Rating:
0 to 60°C (32 to 158°F)

Terminal blocks at rear accept

wirestoAWG12

Up to 30 W per leadwire for RTDs,
with no effect on reading

7.5×11.5×2” (191×292×51 mm)

size of 6.8×10.6” (173×269 mm)

-

H-27

multi-loop

controllers