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English – Burkert Type 8643 User Manual

Page 16

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16 - 8643

english

name

value

Outputs

4, intrinsically safe

Outputs for pilot valves

Min. switching current
Min. holding current
Internal resistance
Open-circuit voltage


30 mA

1)

15 mA
330 Ohm
24 v

1)

Power reduction on holding current after min. 50 ms.

Electrical connections for inputs
and outputs

Screw terminals (up to 2.5 mm

2

)

Fieldbus interface

Communication according to
IEC 1158-2

4-Lead version

According to FISCO

Type of ignition protection

Ex i

Electrical connection

Bus 4 screw terminals (up to 2.5 mm

2

)

Shield 3 screw terminals
(1x directly and 2x capacitively ground-
ed)

2-Lead version

Type of ignition protection

Ex e

Auxiliary supply

4-Lead version only

Type of ignition protection

Increased safety Ex e

Electrical connection

4 screw terminals (up to 2.5 mm

2

)

Device keys (see type plate)

2-Lead version
Polyester housing

8643-2-PO-XX-X-XXX

2-Lead version
Aluminum housing

8643-2-AL-XX-X-XXX

4-Lead version
Polyester housing

8643-4-PO-XX-X-XXX

4-Lead version
Aluminum housing

8643-2-AL-XX-X-XXX