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Technical data
Resistance of the signal loop
Operating
Resistance
mode
range of the
signal loop
Operation
0 to 230 Ω
without
Rising linearly
®
HART
com-
with the supply
munication
voltage from:
0 to 230 Ω at
10 V to
0 to 500 Ω at
16 V
0 to 500 Ω
Operation
230 to 270 Ω
®
with HART
Rising linearly
communica-
with the supply
tion
voltage from:
230 to 270 Ω at
11 V to
230 to 500 Ω at
16 V
230 to 500 Ω
230 to 500 Ω
®
HART
mul-
tidrop opera-
tion
When used in accordance with the metrological suitability test
compliant with EN IEC 62990-1, EN IEC 60079-29-1 or
EN 50104, the resistance must not exceed 300 ohms. Further
information on installing the fieldbus interface is provided in
document 9033783.
16.3 Cable specifications
For non-conduit installations, use shielded cables.
®
Analog and HART
connection with controller and
power supply
Power supply and
signals
Relays
Digital connection with controller
Instruments with fieldbus interfaces and remote sensors
must be installed with shielded cables.
Modbus RTU
PROFIBUS PA
Foundation Fieldbus
44
Power supply range
at 10 V DC
10 to 18 V DC
18 to 30 V DC
at 13 V DC
11 to 16 V DC
18 to 30 V DC
10 to 30 V DC
3-core shielded cable
24 - 12 AWG / 0.2 - 2.5 mm²
20 - 12 AWG / 0.5 - 2.5 mm²
1)
2-core or 3-core
, ≥ 26 AWG
2-core, cable type A
Wave impedance R
: 135 - 165 Ω
w
Capacitance / unit length C': <
30 pF/m
Loop resistance R': 110 Ω/km
Core diameter d: 0.64 mm
Core cross section q: > 0.34 mm²
Shield coverage: ≥ 90 %
Digital connection with controller
Power supply
1) If the distance between the controller and the transmitter is very long
(>1 km) and the power supplies of the controller and the transmitter
are separate, interference or differential differences can occur. In this
case, 3-core cabling with ground must be selected. Ground is then
connected to the transmitter and looped through to the ground of the
controller.
16.4 Power supply and relays
1)
Relay rating
2)
SPDT
230 V
30 V
, resistive
load
1) For safety-related applications (SIL 2), the maximum contact rating is
reduced (see Polytron
2) Single pole, double throw, (changeover electrical contacts)
Power supply Polytron 8xx0
Operating voltage
Inrush current
1) At supply voltages of < 7 V DC the instrument provides a fault signal.
The warning signal "undervoltage" depends on the connected load at
the 4-20 mA output and the cable resistance. In case of lower load
(e.g. 230 Ω), the fault relay drops out and the current output is 0 mA.
In case of higher load (e.g. 500 Ω), warning message 011 is indicated.
Operating current
®
Polytron
8100 EC
without relay, non-
remote sensor
with relay, remote
sensor
®
Polytron
8200 CAT
without relay, non-
remote sensor
with relay, remote
sensor
®
Polytron
8310 IR
without relay, non-
remote sensor
with relay, remote
sensor
Instructions for use
|
Dräger Polytron
2-core, 24 - 12 AWG / 0.2 -
2.5 mm²
0.1 A - 5 A
0.1 A (minimum) - 5 A
®
8xx0 Safety Manual).
1)
10
to 30 V
at the instrument
2.3 A for 2 ms at 24 V
resistor
80 mA
100 mA
105 mA (DrägerSensor DQ)
130 mA (DrägerSensor LC)
145 mA (DrägerSensor DQ)
165 mA (DrägerSensor LC)
145 mA
185 mA
®
8000 Series SW version ≥ 4.0.x
,10 Ω
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