Emerson Rosemount X-Stream Series, Instruction Manual

Page: 37 / 536

Emerson Process Management GmbH & Co. OHG
1-13
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
1.3 Interfaces
In addition to the 4 default digital outputs,
analyzers can optionally be upgraded with
9 or 18 more digital outputs, to be used for
various purposes, e.g.:
•
Triggering concentration alarms: Process
control systems can detect when limits are
exceeded and trigger appropriate actions.
•
Switching external components: For ex-
ample, during automatic calibration, the
necessary valves can be activated directly
by the analyzer.
The different functions can be assigned via
software menus. For a comprehensive list of
available functions,
6-68.
Electrical details:
maximum load of 30 V / 1 A / 30 W,
can be operated as normally open (NO) or
normally closed (NC).
1.3.6.2 Digital Outputs
Digital inputs can be integrated into the units
in groups of 7 or 14.
Digital inputs can be used to:
• trigger calibration procedures, for example
by a process control system
•
remotely control valves and the optional
sample gas pump (in concert with correctly
configured digital outputs).
The different functions can be assigned via
software menus. For a comprehensive list of
available functions,
6-71 .
Electrical details:
DC inputs
LOW: U
in
≤
1,5 V
HIGH: U
in
≥
4,5 V
R
in
: 57.5 k
Ω
Common ground for all outputs (“IN-
GND”)
The inputs are protected against excess
voltages of up to approx. 40 V. An open (not
wired) input has LOW potential.
1.3.6.3 Digital Inputs
1.3.6.1 Analog Inputs
Two d. c. analog inputs enable connection to
external devices. Their signals can be used
for e.g.
•
cross compensation
•
pressure compensation, or
•
handled as a separate measurement chan-
nels.
1.3.6 Optional Interfaces
Electrical details:
0–1 (10) V , R
in
= 100 k
Ω
or
0–20 mA, R
in
= 50
Ω
The inputs are protected against overload up
to ±
15 V or ± 20 mA.
1
T
echnical
Description