Crouzet Temperature controllers Selection Guide

Selection guide Temperature controllers

Number

Alarm

Action type

Heating

Input type

Resistance

temperature detector

PT 100 (2-wire)

Thermocouple J

Thermocouple K

Control type

Digital

or Proportional

derivative

of displays

Designation

- - Relay 5A

CT 48 A

Temperature

(-50 to +30°C)

(0 to +40°C)

(0 to +120°C)

(0 to +200°C)

(0 to +400°C)

(0 to +250°C)

(0 to +450°C)

(0 to +600°C)

(0 to +800°C)

(0 to +1200°C)

Output 1

Output 2

-

Supply

230 VAC

voltage

Page 210

CT 48 A

Universal configurable:

Resistance

temperature detector

PT 100 (2-3-wire)/

Thermocouples

J-K-R-S-L-N/Voltage

Heating

AND/

OR

Cooling

Resistance temperatu-

re detector
PT 100 (3-wire)/
Thermocouples

J-K-R-S-T-L-N/
Voltage/current

(1) Optional Modbus-Jbus RS 485 link on request for MIC 48 controllers

Heating

OR

Cooling

Resistance

temperature detector

PT 100 (3-wire)/

Thermocouples J-K-L-N

PID with

adaptive tune

PID with

adaptive tune

1

2

1

1

(4 digits)

2

(4 digits)

1

(3 digits)

2

(3 digits)

CTD 24

MIC 48

Without MODBUS

J.BUS RS 485

With MODBUS

J.BUS RS 485

(1)

MIC 48

(1)

CTD 43

CTD 46

link

link

Relay 3A

Solid
state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid state

Relay 3A

Solid
state

Relay 1A

Relay 1A

100 to 240 VAC

24 VAC/DC

100 to 240 VAC

24 VAC/DC

100 to 240 VAC

24 VAC/DC

100 to

240 VAC

24 VAC/DC

100 to

240 VAC

24 VAC/DC

100 to

240 VAC

24 VAC/DC

100 to

240 VAC

24 VAC/DC

Page 219

CTD 24

Page 212

MIC 48

Page 216

7

CTD 43

Heating

AND

Cooling

With this function, the controller performs initial auto tuning of the PID control parameters and performs adaptive tuning of these parameters during operation

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Resistance

temperature detector

PT 100 (3-wire)/

Thermocouples J-K-L-N

PID with

adaptive tune

-

2

(3 digits)

CTH 46

Relay 3A

Solid state

Relay 3A

Solid state

Relay 1A

100 to

240 VAC

Page 216

24 VAC/DC

CTH 46

207

COMMON FUNCTIONS FOR THE RANGE OF DIGITAL CONTROLLERS

Sommaire général

SMART function : auto-tune and adaptive tune

The entire range incorporates an algorithm known as SMART. This
algorithm calculates the PID control parameters automatically on star­ting (auto-tune) and during the process if any changes occur (adaptive
tune) without any user intervention.

Measurement

Starting period

During the process

➜ Starting period

The SMART function triggers its auto-tune action to calculate the PID
parameters.

This enables an optimum approach to reaching the setpoint.

➜ During the process

The SMART function triggers its adaptive tune action to recalculate the
PID parameters if there is a change in the setpoint or a modification to
the load.

SOFT-START function : gradual preheating

This function provides gradual preheating of the process.

This makes it possible to prolong the lifetime of the heating element and
avoid any thermal shocks.

If you require this function, simply set the required output power (OLH)
for preheating as well as its action time (t OL).

On starting, the inhibition function for the temperature threshold alarm
ensures that no fault indication will be acknowledged during preheating.

In addition, these controllers also offer the possibility of programming a
ramp to gradually increase power to further limit the risk of thermal
shocks.

Setpoint

Output power

100%

OLH

Adaptive tuneAuto-tune

Starting Control Time

Output power

limit threshold

Gradual power increase ramp (%/s)

7

OFFSET function : constant offset value

There are many applications where it is often difficult to install a
sensor in the most ideal location.
Indeed, in several cases, the sensor is installed quite far away from the

desired location.
Installing a sensor at such a distance can generate a measured value

which is not actually representative of the process value.
It is for this reason that our controllers offer the possibility of

programming a constant shift value known as an OFFSET. This
OFFSET is the difference between the actual temperature to be
measured and the temperature of the location where the sensor is
installed. Thus, the value read on the controller is that of the
temperature at the monitoring point and not the value at the sensor
installation point.

Starting

tOL

Output power

limit time

Display rea-

ding

12

10

8

6

4

2

0

24681012

with OFFSET

without OFFSET

constant programmed
deviation (known as OFFSET)

Time

Measurement

208

For more information www.crouzet.com