General data

Connection of field devices

• Standard-compliant field devices for PROFIBUS PA or FOUNDATION Fieldbus H1
• Max. 4 per AFD4/AFD4 RAILMOUNT/AFD4 FM
• Max. 8 per AFD8
• Max. 31 per fieldbus segment
• Operating environment up to Zone 2 or 22; Class I Zone 2/ Division 2
  (with AFD4 RAILMOUNT depending on enclosure used)
• The max. current consumption of all fieldbus components of the FF fieldbus segment is 0.5 A

Degree of protection

• AFD4, AFD4 FM, AFD8

IP66

• AFD4 RAILMOUNT

Depending on enclosure used

Voltages, currents, potentials

Power supply

Via bus, no auxiliary power necessary

Rated supply voltage, permissible range

16 to 32 V DC

Reverse polarity protection (together with FDC 157)

Yes

Overvoltage protection

No

Current consumption

• Current consumption at idle

• AFD4, AFD4 RAILMOUNT, AFD4 FM

24 mA

• AFD8

34 mA

• Current consumption with connected field devices

• AFD4, AFD4 RAILMOUNT, AFD4 FM

24 mA + total current of all field devices

• AFD8

34 mA + total current of all field devices

• Additional current consumption of the AFD at end of line (an open main line connection)

30 mA

• Current consumption at max. power output per spur line

• AFD4, AFD4 RAILMOUNT, AFD4 FM

264 mA

• AFD8

514 mA

Power loss

• AFD4, AFD4 RAILMOUNT, AFD4 FM

Min. 384 mW; max. 3.2 W

• AFD8

min. 544 mW; max. 4.1 W

Grounding

Direct, via grounding rail

Electrical isolation between main line and spur lines

No

Connections, interfaces

Main line

Number of connections

2

Cable bushings

• AFD4

Cable glands M16

• AFD4 RAILMOUNT

No cable glands/threaded plugs

• AFD4 FM

Terminal screws M20

• AFD8

Cable glands M16

Interfaces

PROFIBUS PA and FOUNDATION Fieldbus H1

Automatic bus terminator

Yes

Spur lines

Number of connections

• AFD4, AFD4 RAILMOUNT, AFD4 FM

4

• AFD8

8

Cable bushings

• AFD4

Cable glands M16

• AFD4 RAILMOUNT

No cable glands/threaded plugs

• AFD4 FM

Terminal screws M16

• AFD8

Cable glands M16

Short-circuit proof

Yes

Intrinsically-safe acc. to FISCO

No

Current I_max (DC) on spur lines 1 to 4 (AFD4) or 1 to 8 (AFD8)

60 mA

Short-circuit current (test current)

6 mA

Debounce logic

Yes

No-load voltage

< 30 V

Current output to field devices

• AFD4, AFD4 RAILMOUNT, AFD4 FM

Max. 240 mA

• AFD8

Max. 480 mA

Status, interrupts, diagnostics

Status indicator

Yes

Diagnostics function

Yes

Diagnostics LED

Yes

Interrupts

No

Climatic conditions

Permissible operating temperature

-40 to +70 °C

Permissible storage/transport temperature

-40 to +85 °C

Relative humidity during operation

Max. 95 %

Approvals for potentially explosive atmospheres

• Gas

Zone 2
(AFD4 RAILMOUNT depending on enclosure used)

• Dust

Zone 22
(AFD4 RAILMOUNT depending on enclosure used)

Dimensions and weight

Dimensions (W ? H ? D) in mm (without screwed glands)

• AFD4, AFD4 RAILMOUNT, AFD4 FM

220 ? 120 ? 83

• AFD8

360 ? 120 ? 83

Weight

• AFD4/AFD4 FM

2 000 g

• AFD4 RAILMOUNT

1 000 g

• AFD8

3 000 g

Approvals, standards

AFD4, AFD4 RAILMOUNT and AFD8

• CE

According to 94/9/EG (formerly ATEX 100a), 2004/108/EG and 2006/95/EG

• ATEX

II 3G Ex nA ic [ic] IIC T4 Gc
II 3D Ex tc [ic] IIIC T80°C Dc IP66

• IECEx

IECEx DEK 12.0069X

• KCC

Korea Certification

• INMETRO

Ex nA [ic] IIC T4 Gc
Ex tc [ic] IIIC T80 °C

AFD4 FM

• cFMus

FM Class 3600, 3611, 3810, ANSI/ISA 60079-0/-31, ANSI/ISA 60529, ANSI/NEMA250

General data

Connection of field devices

• Standard-compliant field devices for PROFIBUS PA or FOUNDATION Fieldbus H1
• Max. 6 per AFDiSD
• Max. 31 per fieldbus segment
• Operating environment up to Zone 1 or 21; Class I Zone 1
• The max. current consumption of all fieldbus components of the FF fieldbus segment is 0.5 A

Degree of protection

IP66

Voltages, currents, potentials

Power supply

Via bus, no auxiliary power necessary

Rated supply voltage, permissible range

16 to 32 V DC

Reverse polarity protection

Yes

Overvoltage protection

No

Current consumption

• At 28 V input voltage

? 64 mA + (0.838 ? total current of all field devices)

• At 24 V input voltage

? 67 mA + (1.008 ? total current of all field devices)

• At 20 V input voltage

? 74 mA + (1.246 ? total current of all field devices)

Power loss

Min. 1.4 W; max. 5.9 W

Grounding

Direct, via connection bar

Electrical isolation between main line and spur lines

Yes

Test voltage

2550 V DC, 2 s

Connections, interfaces

Main line

Number of connections

2

Cable bushings

Cable glands M20

Interfaces

PROFIBUS PA and FOUNDATION Fieldbus H1

Automatic bus terminator

Yes

Spur lines

Number of connections

6

Cable bushings

Cable glands M16

Short-circuit proof

Yes

Intrinsically-safe acc. to FISCO

Yes

Current I_max

• on spur line S1

60 mA

• on spur lines S2 to S6

40 mA

• in total for all field devices

180 mA

Short-circuit current (test current)

5 mA

Debounce logic

Yes

No-load voltage

Max. 15.3 V

Current output to field devices

Max. 260 mA

Status, interrupts, diagnostics

Status indicator

Yes

Diagnostics function

Yes

Diagnostics LED

Yes

Interrupts

No

Enhanced fieldbus diagnostics in PROFIBUS PA (can be activated optionally)

Yes

Climatic conditions

Permissible operating temperature

-40 to +70 °C

Permissible storage/transport temperature

-40 to +85 °C

Relative humidity during operation

Max. 95 %

Approvals for potentially explosive atmospheres

• Gas

Zone 1 and Zone 2 or Class I Zone 2/Division 2 and Class I Zone 1

• Dust

Zone 21 and Zone 22

Dimensions and weight

Dimensions (W ? H ? D) in mm

380 ? 170 ? 85

Weight

4 500 g

Approvals, standards

• CE

According to 94/9/EG (formerly ATEX 100a), 2004/108/EG and 2006/95/EG

• ATEX

Ex e ib mb [ia IIC Ga] [ia IIIC Da] IIC T4 Gb
Ex nA ic [ia IIC Ga] [ia IIIC Da] IIC T4 Gc
Ex t IIIC T80 °C Db IP66
KEMA 10 ATEX 0055

• IECEx

IECEx KEM 10.0026

• KCC

Korea Certification

• INMETRO

Ex e ib mb [ia IIC Ga] [ia IIIC Da] IIC T4 Gb
Ex nA ic [ia IIC Ga] [ia IIIC Da] IIC T4 Gc
Ex tb IIIC T80 °C IP66
(?40 to +70 °C)

• NEPSI

Ex e ib mb [ia IIC GA] [iaD] IIC T4 Gb;
Ex nA ic [ia IIC Ga] [iaD] IIC T4 Gc; DIP A21 T80°C IP66

System requirements

• SIMATIC PCS 7 system software

As of V8.1

• SIMATIC PDM

As of V8.2

General data

Connection of field devices

• 1 fieldbus segment with max. 31 field devices
• Operating environment up to Zone 2 or 22; Class I Zone 2/ Division 2
• The max. current consumption of all fieldbus components of the FF fieldbus segment is 0.5 A

Degree of protection

IP66

Voltages, currents, potentials

Power supply

Via bus, no auxiliary power necessary

Rated supply voltage, permissible range

16 to 32 V DC

Reverse polarity protection (together with FDC 157)

Yes

Overvoltage protection

No

Current consumption at idle

54 mA

Power loss

Min. 864 mW; max. 2.13 W

Output current for supplying all field devices of the fieldbus segment (for dimensioning the device configuration)

1 A

Grounding

Direct, via connecting bar

Connections, interfaces

Main cables

Number of connections

2

Cable bushings

Cable glands M16

Automatic bus terminator

No

Maximum permissible continuous main line current

1 A

Y-connectors for fieldbus line segment

Number of connections

1 or 2 (with center feed)

Cable bushings

Cable glands M16

Interfaces

PROFIBUS PA and FOUNDATION Fieldbus H1

Short-circuit proof

Yes

Intrinsically-safe acc. to FISCO

No

Current I_max on Y (limited by Compact FF Link)

0.5 A

Debounce logic

No

Continuous output voltage

Max. 32 V

Current output to field devices

Max. 0.5 A

Status, interrupts, diagnostics

Status indicator

Yes

Diagnostics function

Yes

Diagnostics LED

Yes

Interrupts

No

Climatic conditions

Permissible operating temperature

-40 to +70 °C

Permissible storage/transport temperature

-40 to +85 °C

Relative humidity during operation

Max. 95 %

Approvals for potentially explosive atmospheres

• Gas

Zone 2

• Dust

Zone 22

Dimensions and weight

Dimensions (W ? H ? D) in mm (without screwed glands)

220 ? 120 ? 83

Weight

2 000 g

Approvals, standards

• CE

According to 94/9/EG (formerly ATEX 100a), 2004/108/EG and 2006/95/EG

• ATEX

II 3G Ex nA IIC T4 Gc
II 3D Ex tc IIIC T80°C Dc IP66

• IECEx

IECEx DEK 12.0069X

• KCC

Korea Certification