Eclipse 705 Installation And Operating Manual page 9

WIRING
CAUTION: power must be switched OFF before wiring the unit.
Current loop test
point (HART only)
®
Ex
Non Ex
IMPORTANT:
The shield wire should only be grounded at ONE side only. It is recommended to connect the shield to ground in the field (at
the transmitter side - as shown above) but connecting in the control room is also allowed.
LOOP RESISTANCE
– +
–
LOOP
CURRENT
®
IS
Ex
Non Ex
Galvanic Barrier (only needed for intrinsically safe units):
HART : max. 28,4 V DC @ 124 mA
®
Foundation Fieldbus™ / Profibus PA™: max. 17,5 V DC
@ 380 mA
ANALOG I/O
or
DIGITAL I/O
(only for units with HART)
1200
1000
800
630
Ω
600
400
200
0
11
0 10
Positive supply to (+) terminal
Negative supply to (-) terminal
Shield wire to green grounding screw (resistance to
IS
ground must be < 1 Ω).
Do not connect shield
20,5 mA
24 Vdc
20 30 40 Vdc
Use certified flameproof cable
gland(s) and cable for Explosion
proof area.
Standard shielded twisted
pair cable recommended.
Non shielded cable can be
used per NAMUR NE 21
for field strenghts up to
10 V/m).
0 % 100 %
Customer supplied
local current meter
Ex
Non Ex
9