General data

Connection of field devices

• Standard-compliant field devices for PROFIBUS PA or FOUNDATION Fieldbus H1
• Max. 4 per AFD4
• Max. 8 per AFD8
• Max. 31 per fieldbus segment
• Operating environment up to Zone 2 oder 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 ... 32 V DC

Reverse polarity protection (together with FDC 157)

Yes

Overvoltage protection

No

Current consumption

• Current consumption at idle

AFD4: 24 mA

AFD8: 34 mA

• Current consumption with connected field devices

AFD4: 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: 264 mA

AFD8: 514 mA

Power loss

AFD4: 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

Interfaces

PROFIBUS PA and FOUNDATION Fieldbus H1

Automatic bus terminator

Yes

Spur lines

Number of connections

• AFD4

4

• AFD8

8

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

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 ... +70 °C

Permissible storage/transport temperature

-40 ... +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

220 ? 120 ? 83

• AFD8

360 ? 120 ? 83

Weight

• AFD4

2 000 g

• AFD8

3 000 g

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 oder 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 ... 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

Interfaces

PROFIBUS PA and FOUNDATION Fieldbus H1

Automatic bus terminator

Yes

Spur lines

Number of connections

6

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 ... +70 °C

Permissible storage/transport temperature

-40 ... +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

General data

Connection of field devices

• 1 fieldbus segment with max. 31 field devices
• Operating environment up to Zone 2 oder 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 ... 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

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)

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 ... +70 °C

Permissible storage/transport temperature

-40 ... +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