Vega VEGAMET 141, Инструкции по безопасности

Страница: 16 / 56

14 VEGAMET 141, 142 • Installation in non-Ex area
63696-01-201218
Relay output:
Relay 1: terminals 61, 62, 63
Relay 2: terminals 64, 65, 66
Relay 3: terminals 67, 68, 69 1 A AC (cos phi > 0.9), 250 V AC, 250 VA
1 A DC, 60 V DC, 40 W
U
m
= 253 V AC
Current output circuit:
I
out
1, terminals 41[+], 42[-]
In addition only VEGAMET 142:
I
out
2, terminals 43[+], 44[-]
I = 0/4 … 20 mA
U ≤ 16 V DC
Load ≤ 500 Ohm
U
m
= 253 V AC
Intrinsically safe circuit
Supply and signal circuit:
4 … 20 mA sensor 1: Terminals 1[+], 2[-],
Service socket [1HART]
In addition only VEGAMET 142:
4 … 20 mA sensor 2: Terminals 4[+], 5[-],
Service socket [2HART]
In type of protection intrinsic safety Ex ia IIC, IIB/IIIC.
For connection to a certified, intrinsically safe circuit.
U
o
≤ 23.3 V DC
I
o
≤ 109.8 mA
P
o
≤ 639.6 mW
Characteristics: linear
C
i
negligibly small
L
i
negligibly small
The maximum values given in the table can be used as concentra-
ted capacitances and concentrated inductances.
The values for IIC and IIB are also permissible for dust explosi-
ve areas.
Ex ia IIC IIB, IIIC IIA
Permissible external inductance L
o
0.2 mH 0.5 mH 0.5 mH 2 mH 10 mH
Permissible external capacitance C
o
120 nF 88 nF 580 nF 470 nF 770 nF
Permissible outer L
o
/R
o
-ratio 55 µH/Ohm 55 µH/Ohm 221 µH/
Ohm
221 µH/
Ohm
443 µH/
Ohm
The HART1 and HART2 service sockets are directly connected to the intrinsically safe output termi -
nals (1, 2 and 4, 5). The intrinsic safety of the combination of intrinsically safe HART communicator
(e.g. VEGACONNECT) and connected intrinsically safe device must be evaluated as part of the
system design.
The intrinsically safe circuits of VEGAMET 141, 142 are galvanically separated from ground.
The intrinsically safe circuits of the VEGAMET 141, 142 are reliably separated from the non-intrinsi-
cally safe circuit up to a peak value of 375 V.
The maximum voltage on the non-intrinsically safe circuits must not exceed 253 Vrms in the event of
a fault.
9 Mechanical data
The following mechanical data are valid for all housing and electronics versions.
ATEX