Burkert Type 8643 - Manual (Page 16)

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