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81
11 Supplement
VEGAPULS 68 • Foundation Fieldbus
36538-EN-170405
Galvanic separation between electronics and metal housing parts
Ʋ Reference voltage
500 V AC
Overvoltage protection
Highest continuous operating voltage
35 V DC
Max. permissible input current
500 mA
Response voltage
> 500 V
Discharge current
< 10 kA (8/20 µs)
Electrical protective measures
Protection rating
Housing material
Version
IP-protection class
NEMA protection
Plastic
Single chamber
IP 66/IP 67
Type 4X
Double chamber
IP 66/IP 67
Type 4X
Aluminium
Single chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Double chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Stainless steel (electro-
polished)
Single chamber
IP 66/IP 68 (0.2 bar)
Type 6P
Stainless steel (precision
casting)
Single chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Double chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Protection rating (IEC 61010-1)
III
Approvals
Instruments with approvals can have different technical specifications depending on the version.
For that reason the associated approval documents of these instruments have to be carefully
noted. They are part of the delivery or can be downloaded under www.vega.com, "
Instrument
search (serial number)
" as well as in the download area.
11.2 Supplementary information Foundation Fieldbus
The following table gives you an overview of the instrument versions and the corresponding device
descriptions, the electrical characteristics of the bus system as well as the applied function blocks.