Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
Continuation «3. Specification and ordering information»
Order Code 811 –
7. Response of the output contact AF
for a measurement/supply circuit fault
Without output contact
Output contact relay energized
Output contact relay de-energized
8. Climatic rating
Standard climatic rating
Improved climatic rating
4. Brief description
The power supply unit SINEAX B 811 provides the auxiliary
DC for two-wire transmitters and transfers the measured
variable unchanged to the electrically insulated output.
Conversion to a different signal range such as 0...5 mA or
1...5 V (signal converter) is also possible.
Some versions of the SINEAX B 811 are designed for FSK
communication. They are used in conjunction with "intelli-
gent" two-wire transmitters which are capable of dialogue
and operation according to the FSK principle and the HART
or user-specific protocol.
The series also includes "intrinsically safe" versions
[EEx ia] IIC with an intrinsically safe measurement/supply
circuit. These operate in conjunction with intrinsically safe
two-wire transmitters located in explosion hazard areas.
Provision is made for monitoring the measurement/supply
circuit to detect short and open-circuits. Either of these faults
is signalled by the fault signalling relay AF and the red LED.
The output signals A1 and A12 can be set on the DIP switches
to have a linear increasing or decreasing response.
The device fulfils the protection requirements of the EMC
guidelines (89/336/EWG). It bears the CE symbol for EMC.
5. Technical data
Input circuit (MSK)
Signal range I
:
4...20 mA DC
E
1
FSK = Frequency Shift Keying
24
Supply voltage U
24 V ± 7% with standard (non-Ex) version,
not designed for communications protocol
24 V ± 7% with standard (non-Ex) version,
designed for FSK communication
> 16.9 V
with Ex versions,
0
not designed for communications protocol
1
> 1.4 V
with Ex versions,
2
designed for FSK communication
Current limiter:
0
1
Max. line resistance:
1
Measuring output
Output signals A1 and A12
(see section "10. Electrical connections")
The output signals A1 and A12 can be load-independent DC
voltages U
or currents I
A
A1 and A12 are not electrically insulated; the same value is
available at both outputs.
DC voltage signals U
Standard ranges for U
Non-standard ranges:
Short-circuit current:
Load-capacity
U
/U
:
A1
A12
Load impedance
U
/U
:
A1
A12
Residual ripple:
DC current signals I
Standard ranges for I
(at I
= 20 mA):
S
E
Electronic
At I
> 30 mA,U
is switched to 0 V
E
S
for approx 1 s.
U
is then automatically
S
readjusted to its set-point
The maximum line resistance R
permissible between the two-wire
transmitter and the supply unit
depends on the voltage difference
U
– U
:
S
M
U
– U
S
M
R
max. =
Line
20 mA
U
= Supply voltage
S
for 2-wire transmitter
U
= min. operating voltage of
M
the 2-wire transmitter
.
A
A
: 0...5, 1...5, 0...10 or 2...10 V
A
0...> 5 to 0...15 V
resp. live-zero
> (1...5) to 3...15 V
≤ 40 mA
20 mA
R
// R
[kΩ] ≥
ext A1
ext A12
< 1% p.p., DC ... 10 kHz
A
: 0...20 mA or 4...20 mA
A
selected by jumpers
Line
U
[V]
A
20 mA
Publicité
Chapitres
Table des Matières
