551 418 01

 

 

 

PD 643 3-Channel Temperature /

0-100 mV input module

 

Specific Features

The PD 643 is an analogue input module with one Pt-100/Pt-1000/thermocouple/ 0-100 mV input channel and two thermocouple/0-100 mV input channels. All inputs can be configured for thermocouple/0-100 mV sensor input. A Pt-100 / Pt-1000 temperature sensor can be connected to channel 1 and may be used as a reference temperature for the thermocouple sensors connected to channel 2 and 3.

 

The thermocouple inputs are floating.

 

The PD 643 provides linearization for the following types of thermocouple transducers: Type R, S, B, J, T, E, K and N.

 

A PD 991 Pt-100 sensor can be very useful if channel 1 is to be used as a temperature reference for thermocouple sensors connected to the channels 2 and 3.

 

 

 

 

 

PD 643 Block Schematic

 

 

 

 

 

Channel Structure

The PD 643 consists of 4 channels as shown in the table.

 

Channel No.

Channel Name

Channel Description

0

Service

Device Ident., Address and Config.

1

Analog_1

Analogue Input

2

Analog_2

Analogue Input

3

Analog_3

Analogue Input

 

 

Electrical Specifications

Power supply

Power supply DC:

nom.

24.0 V

min.

18.0 V

max.

32.0 V

Ripple voltage:

max.

5 %

 

 

 

Power consumption @ 24V DC

 

 

Operation:

max.

25 mA

Current at power up:

max.

60 mA

 

Analogue input (Ch. 1- 3)

Signal type:

Thermocouple

Input impedance:

> 5 M

Calibration error:

@ Tamb. 20 C

max. +/- 0.1 % of fullscale

Ambient temperature coefficient Tc:

max.

+/- 100 ppm / C

Ambient temperature influence (ΔV):

Tc x (Tambient 20) x input

Resolution:

typ.

20 V

Update time:

fixed

0.8 s

 

Voltage to temperature conversion for thermocouples

Supported IEC 584-1 thermocouple types:

R, S, B, J, T, E, K, N

(See data sheet for thermocouple measurements)

 

Filter for analogue input signal

Type:

4th order low pass

 

Time constant:

configurable

3.0 s 50.0 s

Gain error:

max.

+/- 0.1 %

Analogue input (Ch. 1 - 3)

Signal type:

Pt-100 / Pt-1000

 

Connection:

4-wire / 2-wire

 

Update time:

Fixed

2.4 s

Input temperature range:

Pt-100

Pt-1000

-100 C → +600 C

-100 C → +200 C

Ambient temperature coefficient Tc:

max.

15 ppm / C

Ambient temperature influence (ΔT):

Tc x (Tambient 20) x (Tsensor + 273)

 

Pt-100 Data (excluding sensor)

Calibration error:

@ Tamb. 20 C

max.

0.1 C

Resolution:

typ.

0.05 C

Measuring current:

max.

500 A

 

Pt-1000 Data (excluding sensor)

Calibration error:

@ Tamb. 20 C

max.

0.2 C

Resolution:

typ.

0.2 C

Measuring current:

max.

50 A

Ambient temperature range

Operating temperature:

-25 C 70 C

 

Storage temperature:

-40 C 85 C

 

 

Humidity

Relative humidity:

max.

95 %

 

EMC

Immunity:

EN 61000-6-2

Emission:

EN 61000-6-3

 

Vibration

Test method:

IEC 60068-2-6

Frequency / amplitude:

 

2-10 Hz: +/- 5.0 mm

10-100 Hz: +/- 2g

Sweep rate:

max. 1 octave/min

Number of axes:

3 mutually perpendicular

 

 

 

 

 

Related topics

Ordering Information

Wiring diagrams

LED function

Base Module overview

Application notes

PD 640 Analogue I/O Module (Current)

PD 641 Analogue Input Module (Temperature)