SITRANS I100 Isolating Power Supplies with HART

SITRANS I100 Isolating Power Supplies with HART
Обзор

Analog input 0/4 ... 20 mA

The isolating power supplies are used for the intrinsically safe operation of 2- and 3-wire transmitters and for connecting to intrinsically safe mA sources.

The 2- and 3-wire transmitters are supplied with auxiliary power from the transmitter supply unit.

For 2-wire transmitters the isolators transfer the HART communication signal bidirectionally.

Особенности

Active output 0/4 ... 20 mA

Suitable for 2-, 3-wire transmitters, 2-wire HART transmitters and mA sources

Intrinsically safe input [Ex ia] IIC

Galvanic isolation between input, output and auxiliary power

Open-circuit and short-circuit monitoring and messaging for input and output (can be switched off)

Installation possible in Zone 2 and Div. 2

Can be used up to SIL 2 (IEC 61508)

 

Zones

 

0

1

2

20

21

22

Ex i interfaces

X

X

X

X

X

X

Installation in

 

 

X

 

 

X


Дизайн

The HART isolating power supply is comprised of a compact plastic enclosure (IP30) and is equipped with push-in screw terminals.

On the front are a green LED for indicating the power supply status and a red LED for signaling errors.

The auxiliary power supply can be connected individually using push-in screw terminals or jointly for up to 40 units using pac-Bus.

SITRANS I100 isolating power supply, function block diagram

Технические данные

SITRANS I100 Isolating Power Supplies with HART

Ex i input

 

Input signal

0/4 ... 20 mA with HART

Functional range

0 ... 24 mA

Max. input current for mA sources

50 mA

Transmitter supply voltage

≥ 16 V at 20 mA (for 2-, 3-wire)

Supply voltage residual ripple

≤ 25 mVeff

No-load voltage

≤ 26 V

Short-circuit current

≤ 35 mA

Input resistance (AC impedance HART)

≈ 500 Ω

Input resistance for mA sources

30 Ω

Communication signal (on 2-wire transmitters)

Bidirectional HART transmission, 0.5 kHz ... 30 kHz

Output

 

Output signal

0/4 ... 20 mA with HART

Load resistance RL

0 ... 600 Ω (terminal 1 /2-)

0 ... 379 Ω (terminal 3 /2)

(with internal 221 Ω resistance for HART)

Residual ripple

≤ 40 μAeff

No-load voltage

≤ 15.5 V

Communication signal

Bidirectional HART transmission, 0.5 kHz ... 30 kHz

Response time (10 % ... 90 %)

≤ 25 ms

Measuring accuracy

Accuracy, typical data expressed as % of calibrated span at UN, 23 °C

 

Linearity error

≤ 0.1 %

Offset error

≤ 0.1 %

Temperature influence

≤ 0.1 %/10 K

Power supply effect within voltage range

≤ 0.01 %

Load resistance effect

≤ 0.02 %

Rated conditions

 

Degree of protection of enclosure

IP30

Degree of protection of terminals

IP20

Ambient conditions

 

  • Ambient temperature

-20 °C ... 60 °C/ 70 °C (-4 ...  140/ 158 °F)
(see operating instructions)

  • Storage temperature

-40 °C ... 80 °C (-40 ...  176 °F)

  • Relative humidity (no condensation)

≤ 95 %

Electromagnetic compatibility

Tested under the following standards and regulations: EN 61326-1 Use in the industrial environment

Mechanical specifications

 

Screw terminals

 

  • One-wire connection
 

  • Rigid

0.2 ... 2.5 mm2 (0.00031 ... 0.0039 in2)

  • Flexible

0.2 ... 2.5 mm2 (0.00031 ... 0.0039 in2)

  • Flexible with end ferrules (without/with plastic ferrule)

0.25 ... 2.5 mm2 (0.00039 ... 0.0039 in2)

  • Two-wire connection
 

  • Rigid

0.2 ... 1 mm2 (0.00031 ... 0.00155 in2)

  • Flexible

0.2 ... 1.5 mm2 (0.00031 ... 0.0023 in2)

  • Flexible with end ferrules

0.25 ... 1 mm2 (0.00039 ... 0.00155 in2)

Weight

Approx. 160 g (0.35 lb)

Type of installation

On DIN rail according to EN 50022 (NS35/15; NS35/7.5)

Mounting position

Vertical or horizontal

Enclosure material

PA 6.6

Fire protecting class (UL-94)

V0

Auxiliary power

 

Rated voltage UN

24 V DC

Voltage range

18 ... 31.2 V

Residual ripple within voltage range

≤ 3.6 VSS

Rated current (UN, 20 mA)

70 mA

Power consumption (UN, 20 mA)

1.7 W

Power loss (at UN, RL = 250 O)

1.3 W

Operation indicator

Green "PWR" LED

Reverse polarity protection

Yes

Undervoltage monitoring

Yes (no faulty module/output states)

Galvanic isolation

 

  • Test voltage according to EN 60079-11
 

  • Ex i input to output

1.5 kV AC

  • Ex i input to auxiliary power

1.5 kV AC

  • Ex i input to Error contact

1.5 kV AC

  • Test voltage according to EN 50178
 

  • Output to auxiliary power

350 V AC

  • Error contact to auxiliary power and output

350 V AC

Error detection Ex i input

 

  • Open circuit

< 2 mA

  • Short-circuit

> 22 mA

  • Output behavior

= Input signal

  • Output current at IE = 0

IA = 0 mA

Error detection output

 

  • Open circuit

< 2 mA

Error messaging Ex i input/output

 

  • Settings (LF switch)

Activated/deactivated

  • Error indication

LED red "LF"

Error messaging and power supply failure

  • Contact (30 V/100 mA), closed to ground in case of error
  • pac-Bus, floating contact (30 V/100 mA)

Certificates and approvals

 

Explosion protection ATEX

 

  • EC type-examination certificate

DMT 03 ATEX E 010 X

  • Degree of protection

II 3 (1) G Ex nA nC [ia] IIC T4

II (1) D [Ex iaD]

Installation

In Zone 2, Div. 2 and in the safe area

Other approvals

USA (FM) (available soon)

Canada (CSA) (available soon)

Shipping (DNV)

Safety specifications (CENELEC)

 

  • Max. voltage Uo

27 V

  • Max. current Io

88 mA

  • Max. power Po

576 mW

  • Max. connectable capacitance Co for IIC/IIB

90 nF/705 nF

  • Max. connectable inductance Lo for IIC/IIB

2.3 mH/14 mH

  • Internal capacitance Ci and inductance Li

Negligible

  • Insulation voltage Um

253 V

  • When connecting mA sources:
 

  • Max. output voltage Uo

4.1 V

  • Max. connectable voltage Ui

30 V

  • Max. connectable current Ii

100 mA

  • Internal capacitance Ci and inductance Li

Negligible

  • For more information and value combinations see certification.
 


Чертеж

SITRANS I100 isolating power supply with HART, dimensions in mm (inch)

Схема подключения

SITRANS I100 isolating power supply with HART, connection diagram

I100 isolating power supply with HART, output configuration

7NG4124-0AA00 SITRANS I100 ISOLATING POWER SUPPLY HART, RAIL MOUNTING FOR 2/3-WIRE TRANSMITTER AND MA-SOURCES INTRINSICALLY SAFE INPUT 0/4-20MA; POWERSUPPLY: DC 24V
7NG4998-1AA SITRANS I BASIC SET PAC-BUS WITH 5 SINGLE ELEMENTS AND TERMINAL SET (BEGIN AND END)
7NG4998-1AB SITRANS I EXTENSION SET PAC-BUS WITH 5 SINGLE ELEMENTS

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