Novus TxIsoLoop-1/TxIsoLoop-2 Manual do Utilizador descarregar pdf

NOVUS AUTOMATION 1/2

TxIsoLoop-1 / TxIsoLoop-2

LOOP-POWERED ISOLATORS - OPERATING MANUAL V1.0x D

INTRODUCTION

The TxIsoLoop-1 and TxIsoLoop-2 are 0(4)-20 mA signal isolators

with one and two channels respectively. They provide signal

protection by electrically isolating the input signal from the output.

The 4-20 mA input is measured and an identical isolated signal is

produced at the output. Its power is obtained from the 0(4)-20 mA

input loop, dropping the need for an external power supply.

CHARACTERISTICS

• Input/output galvanic isolation.

• Models for 1 or 2 channels.

• Don’t require power supply.

• High accuracy.

• Calibration free.

ESPECIFICAÇÕES

• Input Signal (INPUT): 0 to 20 mA; 4 to 20 mA

(check minimum current for proper operation)

• Max. Input voltage (Vin max.): 32 Vdc

• Voltage drop input/output without protection (Vdrop): < 3 Vdc

• Voltage drop input/output with protection (Vdrop): < 5 Vdc

• Output Signal (OUTPUT): 0(4) to 20 mA

• Max. Load (RL): 1450 R

• Accuracy: 0.2 % FS @ 0 a 60 ºC / RL= 250 R

0.3 % FS @ -20 a 75 ºC / RL= 250 R

• Operating current: > 0,1 mA

• Overload: < 40 mA; < 32 Vdc

• Response time: 2 ms @ RL= 250 R

• Isolation: 3000 Vac / 10 s

240 Vac continuous

• EMC: EN 61326-1

• Ambient temperature range: -20 to + 75 ºC

• Humidity: 20 a 90 %

• Case: ABS (60 %) + PC (40 %). Protection: IP40

• Wire gauge for connections: 0.14 a 1.5 mm²

• Recommended torque: 0.8 Nm

• Terminal blocks injected in Polyamide.

ELECTRICAL INSTALLATION

For proper operation, the TxIsoLoop requires some minimum

voltage in the input loop. This voltage can be found in two ways:

1. In type source devices (transmitters, controllers, etc), this voltage

is provided by the device itself.

Fig. 1 – TxIsoLoop typical connections

The minimum operating voltage can be calculated by the equation

below:

= V

Where:

= V

drop

+ ( I

out(máx)

x R

)

= I

out

2. In sink type devices (2-wire transmitters) the energy is provided by

an external power supply in series in the loop, as shown in Fig. 2.

Fig. 2 – TxIsoLoop used to isolate a 2-wire transmitter

In this arrangement, the power supply must provide enough voltage

such as power both the 2-wire transmitter and the TxIsoLoop.

The minimum voltage required to allow proper operation can be

obtained from the equation below:

= V

Where:

= Power supply voltage

= Voltage required by the 2-wire

transmitter

= V

drop

+ ( I

out(máx)

x R

)

= I

out

1 2

Resumo do Conteúdo

Página 1 - TxIsoLoop-1 / TxIsoLoop-2

NOVUS AUTOMATION 1/2 TxIsoLoop-1 / TxIsoLoop-2 LOOP-POWERED ISOLATORS - OPERATING MANUAL V1.0x D INTRODUCTION The TxIsoLoop-1 and TxIsoLoop-2 ar

Página 2 - SUPPORT AND MAINTENANCE

NOVUS AUTOMATION 2/2 ELECTRICAL WIRING The figure below shows the wiring scheme. Fig. 3 – TxIsoLoop-1 connections Fig. 4 – TxIsoLoop-2 connectio

Comentários a estes Manuais

Sem comentários

Novus TxIsoLoop-1/TxIsoLoop-2 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Novus TxIsoLoop-1/TxIsoLoop-2. NOVUS TxIsoLoop-1/TxIsoLoop-2 User Manual Manual do Utilizador

Resumo do Conteúdo

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Novus TxIsoLoop-1/TxIsoLoop-2