Brief Description; Technical Data - Camille Bauer SIRAX B 811-6 Betriebsanleitung

Order Code 811 –
3. Output signals
measuring outputs A1 and A12
0... 5 V, R ≥ 250 Ω
ext
1... 5 V, R ≥ 250 Ω
ext
0...10 V, R ≥ 500 Ω
ext
2...10 V, R ≥ 500 Ω
ext
Non-standard 0...> 5 to 0...15 V
Live zero > (1...5) to 3...15 V
0...20 mA, R ≤ 750 Ω (500 Ω)
ext
4...20 mA, R ≤ 750 Ω (500 Ω)
ext
Non-standard 0...1 to 0...< 20 mA
Live zero 0.2...1 to < (4...20) mA
4. FSK (Field communications protocol)
Not designed for
communications protocol
Designed for FSK communication
at field output A12
Designed for FSK communication
at measuring output A1
5. Input circuit fault detection
(Open/short-circuit detection)
Open-circuit < 3.6 mA; short-circuit > 21 mA 0
Open-circuit 1 to 4 mA;
short-circuit 20 to 23 mA
6. Response to an input circuit
Output signal linear response
Increasing output signal >>>
Decreasing output signal <<<
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

4. Brief description

The power supply unit SIRAX 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 SIRAX 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.
24
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
1
circuit to detect short and open-circuits. Either of these faults
is signalled by the fault signalling relay AF and the red LED.
2
The output signals A1 and A12 can be set on the DIP switches
3
to have a linear increasing or decreasing response.
4
8
9
A
B
Y
Z
0

5. Technical data

1
Input circuit (MSK)
2
Signal range I
Supply voltage U
24 V ± 7% with standard (non-Ex) version,
1
24 V ± 7% with standard (non-Ex) version,
> 16.9 V
0
1
> 16.4 V
2
Current limiter:
0
1
2
Max. line resistance:
1
1
FSK = Frequency Shift Keying
: 4...20 mA DC
E
(at I = 20 mA):
S E
not designed for communications protocol
designed for FSK communication
with Ex versions,
not designed for communications protocol
with Ex versions,
designed for FSK communication
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
R max. =
Line
20 mA
U = Supply voltage
S
for 2-wire transmitter
U = min. operating voltage of
M
the 2-wire transmitter
Line
M