Pepperl+Fuchs KT-LED-24-PT100-24VDC Bedienungsanleitung

KT-LED-24-PT100-24VDC

Operation Manual

Your automation, our passion

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

Summary

1 Short description ...................................................................................................11

2 Safety instructions and warnings ..........................................................................11

2.1 Use according to the intended purpose ........................................................11

3 Mounting ...............................................................................................................12

3.1 Installation......................................................................................................12

3.2 Electrical connection......................................................................................12

4 Start-up .................................................................................................................12

5 Programming.........................................................................................................12

5.1 Switching to programming .............................................................................12

5.2 Changing the parameter setting.....................................................................13

5.3 Saving the parameter setting.........................................................................13

5.4 Programming ............................................................................................... 13

5.5 End of programming ......................................................................................15

6 Operation ..............................................................................................................15

6.1 Switching the display during operation ..........................................................15

6.2 Saving the momentary value .........................................................................16

7 Error and alarm messages....................................................................................16

8 General technical features ....................................................................................16

8.1 Electrical features ..........................................................................................16

8.2 Mechanical features.......................................................................................16

8.3 Environmental conditions...............................................................................17

9 Scope of delivery................................................................................................... 17

10 Order code ............................................................................................................17

11 Dimensions ...........................................................................................................17

Note :

The fields with a grey background contain the

factory-set default values.

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

english

1 Short description

This digital display is an easy-to-use, microprocessor-con-

trolled device for the display (and the acquisition) of mea-

sured temperature values. The temperatures are measured

by means of Pt100 or Ni100 resistance thermometers. They

can display either the current measured value, the maxi-

mum value or the minimum value. In case of power switch-

off, the maximum and minimum values are stored in an

EEPROM. The values are restored as soon as the display

is powered again. The Latch input is isolated electrically

from the signal input by means of an optocoupler. It allows

storing the current measured value.

The supply voltage (10 .. 30 V DC) is isolated electrically

from the signal input by means of a DC/DC converter.

2 Safety instructions and warnings

Only use this display

– in a way according to its intended purpose

– if its technical condition is perfect

– adhering to the operating instructions and

the general safety instructions.

1. Before carrying out any installation or maintenance

work, make sure that the power supply of the digital

display is switched off.

2. Only use this digital display in a way according to its in-

tended purpose.

3. If its technical condition is perfect.

4. Adhering to the operating instructions and the general

safety instructions.

5. Adhere to country or user specific regulations.

6. The digital display is not intended for use in areas with

risks of explosion and in the branches excluded by the

standard EN 61010 Part 1.

7. The digital display shall only operate if it has been cor-

rectly mounted in a panel, in accordance with the chap-

ter “Main technical features”.

2.1 Use according to the intended purpose

The digital display only may be used as a panel-mounted

device. Applications of this product may be found in indust-

rial processes and controls, in the branch of the manufactu-

ring lines for the metal, wood, plastics, paper, glass, textile,

etc., processing industries.

Overvoltages at the terminals of the digital display must be

limited to the values of overvoltage category II.

If the digital display is used to monitor machines or proces-

ses in which, in case of a failure of the device or an error

made by the operator, there might be risks of damaging the

machine or causing accidents to the operators, it is up to

you to take appropriate safety measures.

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

3 Mounting

3.1 Installation

1. The digital display shall not be installed near to contactors

or motor starters.

2. We recommend the use of wire end ferrules in order to

avoid short-circuits between adjacent terminals.

3. In order to keep the interferences at the measuring input

as low as possible, the signal and power supply wires

must be routed separately.

4. Use shieded cables for all signal/probe wirings and

2. The display shows the following message.

1234567

5. Programming

5.1 Switching to programming

To switch to the programming mode:

1. switch the power supply of the device off, press simulta-

neously both keys on the front side, and then switch the

power supply on again.

⇑⇑

3-wire resistance thermometer

1234567

3. release both keys. The first parameter to be set

appears on the display. The display switches every

second between the following messages

1 s

4. press the left key to stop the display from

switching. The last programmed parameter setting

is displayed.

3.2 Electrical connection

3.2.1 Pt100/Ni100 resistance thermometers

2-wire resistance thermometer

4-wire resistance thermometer

1234567

3.2.2 Supply voltage and Latch input connection

1234567

1 10 ... 30 V DC

2 0 V DC (GND)

3 Latch input

avoid routing the signal/probe wirings parallel to each

other. The shield shall only be grounded at one point in

order to avoid ground loops.

Important note:

Before carrying out any installation or maintenance work,

make sure that the power supply of the digital display is

switched off.

4. Start-up

After switching on the supply voltage:

1. a display test is carried out

(Duration: 2 seconds)

2. Device type and software

version are displayed

(Duration: 2 seconds))

3. the selected probe is displayed

(Duration: 2 seconds).

4. the display is ready to operate and

the measured value is displayed.

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

english

5.2 Changing the parameter setting

1. press the right-hand/grey key to change the

parameter setting by one value at a time

2. to input numerical values, select first the decade with the

left-hand/red key

3. the decade blinks

5.3 Saving the parameter setting and

switching to the following parameter

1. keep the left/red key pressed

5.4 Programmng the adjustable parameters

5.4.1 Input signal type

Range

Selection in the menu

Pt100 probe

Ni100 probe

⇑

4. set now the numerical value using the right-hand/

grey key

5. to reach the following decade, press the left-

hand/red key

6. if negative numerical values are required, set the left

decade to “–” or “–1”.

2. and press simultaneously the right/grey key.

⇑

Note:

The fields with a grey background

contain the factory-set default va-

lues.

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

5.4.3 Decimal point

Decimal point

Selection in the menu

Resolution 0,1 °C/0,1 °F

Resolution 1 °C/1 °F

5.4.5 Correction value

Inputting a correction value allows acting upon the display-

ed result. These correction values may be

Setting the correction value

Selection in the menu

5.4.6 Maximum value acquisition

The maximum value may be saved and consulted during

operation (see 6.1)

Selection in the menu

Maximum value acquisition on

Maximum value acquisition off

5.4.4 Temperature unit

Unit

Selection in the menu

Display in °C

Display in °F

positive or negative. The input is always made with one

decimal place.

5.4.6.1 Resetting the maximum value

This allows defining whether the maximum value can be

reset during operation or not. However, the maximum value

can only be reset if the maximum value display is the active

function (see 6.1). If the maximum value is reset, the cur-

rent measured value becomes the new maximum value.

Selection in the menu

The maximum value can be reset

using the red key

The maximum value cannot be reset

......

Correction value in 0,1 °C/0,1 °F,

depending on the unit selected

5.4.2 Measuring method

Measuring method

2 wires; please note

See point 5.4.2.1 op-

posite!

3 wires

4 wires

Selection in the menu

...

Input here the line resistivity of your 2-wire probe for

long connection cables. If the resistivity value input

here is wrong, the displayed result will not be correct.

line resistivity

5.4.2.1 Line resistivity

If you selected the 2-wire measuring method in 5.4.2, the

display shows

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

english

5.4.7 Minimum value acquisition

The minimum value may be saved and consulted during

operation (see 6.1)

Selection in the menu

Minimum value acquisition on

Minimum value acquisition off

5.5 End of programming

When programming is finished, end the prorgamming

routine as follows:

Selection in the menu

Programming restarts. The set values

can be checked and modified.

Programming is finished. The set

values are used in operation.

5.4.7.1 Resetting the minimum value

This allows defining whether the minimum value can be

reset during operation or not. However, the minimum value

can only be reset if the minimum value display is the active

function (see 6.1). If the minimum value is reset, the current

measured value becomes the new minimum value.

Selection in the menu

The minimum value can be reset using

the red key

The minimum value cannot be reset

6. Operation

6.1 Switching the display during operation

press the right-hand/grey key to select among the following

functions:

–current measured value

–minimum value

–maximum value.

Press the key once to display the designation of the active

display function for 2 seconds. If, during this time, the right-

hand grey key is pressed a second time, the display swit-

ches to the following display function. This is confirmed by

a 2-second display of the designation of the new function.

After these 2 seconds, the display shows, depending on the

selection, the maximum value, the minimum value or the

current measured value.

1. Current measured value, press once the right-hand/

grey key

2. Minimum value (when active), press once the

right-hand/grey key

3. Maximum value (when active), press once the

right-hand/grey key

4. Current measured value, press once the

right-hand/grey key

⇑

for 2 s:

after 2 s:

⇑

for 2 s:

after 2 s:

⇑

for 2 s:

after 2 s:

⇑

for 2 s:

after 2 s:

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

6.2 Saving the momentary value (Display-Latch)

In case of a High Signal at the Latch input, the current mea-

sured value is frozen on the display. The minimum and ma-

ximum value acquisition continues operating in the back-

ground.

7 Troubleshooting and alarm messages

7.1 Display does not light up

If the display does not light up, check the supply voltage

or the power supply cables. Do not open the housing by

force.

7.2 Measuring rang overow or underow

Measuring range overow

Ranges see 8.1

Measuring range underow

Ranges see 8.1

7.3 Input problems

Probe broken or input

signal exceeds the

allowable range

8 Main technical features

Operation: by means of two front panel keys

DIsplay: 5-digit display, red 7-segment LED’s,

Height of the figures 8 mm

Display range: (see temperature range), with leading ze-

ros suppression Measuring range overflow,

indicated by ooooo on the display.

Measuring range underflow, indicated by

uuuuu on the display.

8.1 Electrical features

Input: PT100 resistance thermometer

Ni100 resistance thermometer

Supply current:

1 mA

Circuit type: 2-wire, 3-wire and 4-wire connection tech-

nique, programmable

with probe breakage monitoring

Temperature ranges:

Pt100 acc. to DIN IEC 751:

-199.9°C .. +850.0°C (-327.8°F .. 1562.0°F)

Ni100 acc. to DIN 43760:

-60.0°C .. +250.0°C (-76.0°F .. 482.0°F)

Resolution: 0,1°C (0,1°F) or 1°C (1°F), programmable

Linearity error PT100:

< 0,1 % for the whole measuring range at

an ambient temperature of 20°C

Linearity error Ni100:

< 0,2 % for the whole measuring range at

an ambient temperature of 20°C

Temperature drift:

0,1 K/Kambient

Measuring rate:

5 measurements/second, fixed

Display refresh:

1 ... 2 times per second

Display Latch input:

DIsplay stop for the current measured

value, active for log. 1

Switching log. 0: 0 ... 2 VDC

level log. 1: 4 ... 30 VDC

Supply voltage:

10 ... 30 V DC, electrically separated,

with Verpolschutz

Current consumption:

max. 40 mA

Test voltage: 500 Veff; 50/60 Hz; 1 min

Data backup: EEPROM

8.2 Mechanical features

Housing: Housing for control panel 48 x 24 mm

according to DIN 43 700, RAL 7021

Dimensions: (W x H x D):

48 x 24 x 66 mm

Panel cut-out: (W x H):

45+0,6 x 22,2+0,3 mm

Mounting depth:

approximately 59 mm

Weight: approximately 50 g

Protection level:

IP65 (on the front side)

Connection: Screw terminal, RM 5.08, 7 poles

Connection diameter:

single-wire 0,14 .. 1,5 mm2

thin wire 0,14 .. 1,5 mm2

wire dimensionsAWG 26-16

KT-LED-24-PT100-24VDC KT-LED-24-PT100-24VDC

Connections

1. 10 ... 30 V DC Supply voltage

2. 0 V DC GND

3. Latch - Input

4. Pt100/Ni100

5. Pt100/Ni100 (Sensor-input

6. Pt100/Ni100 see page 14)

7. Pt100/Ni100

english

8.3 Environmental conditions

EMC:

Interference immunity:

with shielded signal and control lines

not intended for local DC electricity

supply network(s) /battery connecting

cable ≥ 30 m

Device Safety

Protection Class:

Protection Class 2 (front side)

Application area:

Pollution level 2 over-voltage Category II

Insulation: Front: double insulation,

Rear side: basic insulation

Signal inputs and und sensor power supply: SELV

Operating temperature:

-20 °C ... +65 °C, relative humidity < 85%

Storage temperature:

-25 °C ... +70 °C

11 Digital display dimensions

Panel cut-out

Countersinking Af3, DIN 74

Panel cut-out

Only the front side is classified as

accessible for the operator

9 Scope of delivery

Digital display

Clamp

Front panel for clamp mounting,

Panel cut-out 50 x 25 mm

Front panel for screw mounting,

Panel cut-out 50 x 25 mm

Seal

Multilingual operating instructions

1 set of self-adhesive symbols

10 Order code

KT-LED-24-PT100-24VDC

Mounting frame

Weltweit

Pepperl+Fuchs SE

Lilienthalstraße 200

68307 Mannheim

Deutschland

Telefon: +49 621 776-0

E-Mail: [email protected]

https://www.pepperl-fuchs.com

Printed in Germany

DOCT-1811B

R60133.9393 - Index 3 · 10/2023

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