Endress+Hauser SWA70, Operating Instructions Manual

Page: 103 / 116

WirelessHART Adapter SWA70 12 Technical data
Hauser 103
12 Technical data
12.1 Input/wired interface
Inputs One input channel for:
• One point-to-point connection with a HART field device, or
• One point-to-point connection with a 4 to 20 mA field device, or
• Up to four externally-powered HART field devices that are connected in the multidrop mode.
Communication interface HART communication in multidrop mode, 4 to 20 mA current signal with one point-to-point
connection
Protocol version HART version 7.0 (backwards compatible with previous HART versions)
Transmission rate 1200 bits/s in HART multidrop mode
Explosion protection Intrinsically safe and dust ignition-proof versions available.
See the "Ordering information" section on Page
14.
Terminal connection data The following values apply at the terminals:
Designation Terminals Value
Current 1 and 2 and
2 and 3 • 4 to 20 mA (as per NAMUR
recommendation NE 43)
• 4 mA if connecting with only
one field device in multidrop
mode
Fault current 1 and 2 and
2 and 3 I
≤
3.6 mA or I
≥
21 mA
Protection Short-circuit protection,
triggered if currents > 25 mA
Power supply for field devices 1 and 2 • Terminal voltage can be set
between 8 and 23 V, in
increments < 0.1 V
• Current: 4 mA
≤
I
out
≤
20 mA
DC (as per NAMUR
recommendation NE 43)
4 to 20 mA/HART input 1 and 2 and
2 and 3 4 mA
≤
I
in
≤
20 mA (as per
NAMUR recommendation NE
43)
High-impedance HART input/
output terminals 4 or 5 and
3 or 6 • Input impedance > 5 K
Ω
for
HART communication
• Input impedance DC =
∞
Input voltage 2 and 3 and
5 and 6 U
i
≤
30 V DC