General data

Connection of field devices

• Standard-compliant field devices for PROFIBUS PA or FOUNDATION Fieldbus H1
• Max. 4 per AFD4/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
• The max. current consumption of all fieldbus components of the fieldbus segment is 1 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

• Current consumption at idle

• AFD4/AFD4 FM

24 mA

• AFD8

34 mA

• Current consumption with connected field devices

• AFD4/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 FM

264 mA

• AFD8

514 mA

Power loss

• AFD4/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 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 FM

4

• AFD8

8

Cable bushings

• AFD4

Cable glands M16

• 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 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

• Dust

Zone 22

Dimensions and weight

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

• AFD4/AFD4 FM

220 ? 120 ? 83

• AFD8

360 ? 120 ? 83

Weight

• AFD4/AFD4 FM

2 000 g

• AFD8

3 000 g

Approvals, standards

AFD4 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 AFDiS
• 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 fieldbus segment is 1 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; up to 1 A

Overvoltage protection

No

Current consumption

• At 28 V input voltage

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

• At 24 V input voltage

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

• At 20 V input voltage

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

Power loss

Min. 1.4 W; max. 5.9 W

Grounding

Direct, via connecting 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 M16

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 line 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

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

• Dust

Zone 21 and Zone 22

Dimensions and weight

Dimensions (W ? H ? D) in mm

380 ? 85 ? 170

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

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 fieldbus segment is 1 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 lines to the FDC 157 couplers

Number of connections

2

Cable bushings

Cable glands M16

Automatic bus terminator

No

Maximum permissible continuous main line current

1 A

Y-connections 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 (together with FDC 157)

Yes

Intrinsically-safe acc. to FISCO

No

Current I_max on Y (limited by FDC 157)

1 A

Debounce logic

No

Continuous output voltage

Max. 32 V

Current output to field devices

Max. 1 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