ERROR MESSAGES

SENSOR FAULT

Upper display alternates: inPt and FAiL

Indicates: thermocouple burnout RTD/Pt100 open or short circuit or negative over-range.

Action: Check sensor/wiring

s

NON-VOLATILE MEMORY ERROR

e

Upper display alternates: dAtA and FAiL

 

g

Action:

De-power briefly. Replace unit if problem

 

persists

a

 

MANUAL POWER ERROR

s

Upper display alternates: hAnd and FAiL

s

 

SP1 set to ON/OFF in CYC.t

e

 

Action:

Select proportional mode

M

IMMEDIATE FAIL ON AUTOTUNE START

 

 

Upper display alternates: PV tunE and FAiL

r

 

Lower display 0

o

 

1. No setpoint entered.

Action:

Enter setpoint

r r

 

2. SP1 set to ON/OFF in

 

 

E

Action:

Select proportional mode

 

Note:

To reset and clear error press ▲▼ together

 

 

briefly to cancel message.

FAIL LATER DURING AUTOTUNE CYCLE

The thermal characteristics of the load exceed the Autotune algorithm limits. The failure point indicated by any display 0.0 in

14e.g. Ctb = 0.0 see adjacent diagram.

INPT

Action: 1. Change the conditions. eg. raise setpoint

TUNE

2. Try

 

 

 

3. Check SP1.P percentage power

AT.SP

 

 

 

(see IMPROVING CONTROL ACCURACY)

 

 

4. If the error message persists, call CAL

 

 

for advice.

 

DATA

READING AUTOTUNE TUNING CYCLE

 

 

 

 

RESULTS IN tECh

 

 

1. Index to

TECH

 

 

HAND

release ▲ or ▼, lower display will alternate Ct.A

CT.A

 

 

and value

 

2.Keep pressed and press ▲ once, the lower display will alternate Ct.b and value (eg. 19.6)

FAIL

3. Repeat step 3 above to view:

0Ct 1, Ct 2, Ct 3, Ct 4, oS 1, uS and oS 2.

Autotune tuning data and limits

CYC.T

Temp

DAC

 

PID

 

 

 

 

 

 

ON.OF

 

 

 

 

 

 

 

 

 

 

 

 

Setpoint

 

oS 1

 

oS 2

 

 

 

Tuning

 

 

 

 

Ct 1

 

Ct 2

 

 

 

TUNE

 

 

 

 

 

 

 

 

 

 

 

 

Cycle

 

 

 

 

 

 

 

75% SP

 

 

 

 

 

New PID

 

 

 

 

 

 

 

 

 

A

b

 

3

4

values

 

 

Ct

Ct

uS

Ct

Ct

entered

 

 

 

TECH

Start TUNE

 

 

 

 

 

Time

 

 

 

 

(100% output)

Page 18
Image 18
Omega Engineering CN9400 specifications Error Messages, Data, Fail

CN9400 specifications

The Omega Engineering CN9400 is a cutting-edge device designed for precision temperature control and monitoring in industrial and research applications. This versatile instrument is renowned for its high accuracy, stability, and user-friendly interface, making it an essential tool for engineers and technicians alike.

One of the standout features of the CN9400 is its advanced PID control algorithm. This method ensures that temperature fluctuations are minimized, allowing for precise temperature management in processes that require strict adherence to specific thermal conditions. The PID control system continuously calculates the error between a desired setpoint and a measured process variable, adjusting the control output to achieve optimal performance.

The CN9400 is equipped with a large, easy-to-read LCD display that provides real-time data on temperature readings and system status. Users can view both set point and actual temperature simultaneously, enabling quick and informed decisions during critical operations. Additionally, the display features customizable alerts and notifications that inform operators of any deviations or potential issues, ensuring a proactive approach to process control.

In terms of connectivity, the CN9400 offers a variety of options, including RS-232 and RS-485 communication protocols, enabling seamless integration into existing control systems. This connectivity ensures that users can monitor and control the device remotely, enhancing operational efficiency and flexibility.

Another noteworthy characteristic of the CN9400 is its robust construction. Designed for durability, it can withstand harsh industrial environments, including extreme temperatures and vibrations. The device is also compatible with various types of temperature sensors, such as thermocouples and RTDs, providing users with the flexibility to select the most appropriate sensor type for their specific application.

In addition to its technical capabilities, the Omega Engineering CN9400 is designed with user convenience in mind. The intuitive menu-driven interface allows for easy programming and operation. Users can quickly navigate through settings and parameters without extensive training, minimizing downtime and enhancing productivity.

Overall, the Omega Engineering CN9400 is a powerful and reliable temperature controller that combines advanced technology with user-friendly features. Its precision, durability, and connectivity make it an ideal choice for a wide range of industrial and research applications, ensuring accurate temperature management in even the most demanding environments.