Vega VEGAPULS 64 - Electrical protective measures

83
11 Supplement
VEGAPULS 64 • Two-wire 4 … 20 mA/HART
51141-EN-210219
Load resistor
Ʋ Calculation (U
B
- U
min
)/0.022 A
Ʋ Example - U
B
=24VDC (24V-12V)/0.022A=545Ω
Voltage supply – sensor with integrated PLICSMOBILE 81
Operating voltage
14)
9.6 … 32 V DC
Power consumption
15)
Ʋ Power saving mode (9 V/12 V) 0.18 mW/0.3 mW
Ʋ Power saving mode (24 V/32 V) 1.8 mW/3.7 mW
Ʋ Permanent operation 1.1 W
Ʋ Peak power (measured value trans-
mission)
11 W
Power requirement
16)
Ʋ Measurement cycle incl. transmission 15 mWh
Sensor power supply
Ʋ O-loadvoltage 31 V
Ʋ Max. current 80 mA
Potential connections and electrical separating measures in the instrument
Electronics Notnon-oating
Reference voltage
17)
500 V AC
Conductive connection Betweengroundterminalandmetallicprocesstting
Electrical protective measures
Housing material Version Protection acc. to
IEC 60529
Protection acc. to NEMA
Plastic Single chamber IP66/IP67 Type4X
Double chamber IP66/IP67 Type4X
Aluminium Single chamber IP66/IP68 (0.2 bar)
IP68 (1 bar)
Type 6P
-
Double chamber IP66/IP68 (0.2 bar)
IP68 (1 bar)
Type 6P
-
Stainless steel (electro-pol-
ished)
Single chamber IP66/IP68 (0.2 bar) Type 6P
IP69K Type 6P
14)
When the instrument is powered by an external voltage supply, make sure the voltage supply unit has a suf-
cientcurrentcarryingcapacity.Withavoltagesupply<9.6V,currentpeaksofupto2Amustbeexpected.
15)
 ThelistedpowerspecicationsincludethevoltagesupplyofaHARTsensorwith20mA.
16)
The listed energy requirement includes the voltage supply of a HART sensor (VEGAPULS 61 with 4 mA
(multidrop mode) and 12 V operating voltage.
17)
Galvanic separation between electronics and metal housing parts