25
Non-standard ranges:
0…1 to 0…< 20 mA
resp. live zero
0.2…1 to < (4…20) mA
Open-circuit voltage:
Approx. – 7…+ 22 V
Burden voltage I
A1
:
15 V without communication
10 V (15 V) with communication*
*When a hand-held terminal is connected to the field output
A12, the voltage across the burden at output A1 reduces to
10 V. Digital communication requires a minimum burden at
output A1 of 250
Ω
. A 250
Ω
resistor is therefore connected
across the output circuit. If the load of the burden across
output A1 already exceeds 250
Ω
, the resistor can be
disconnected by changing the position of a jumper. The full
burden voltage of 15 V is then available at output A1 instead
of 10 V.
External resistance I
A1
: R
ext
max. [k
Ω
] =
I
AN
= Output circuit full-scale value
Burden voltage I
A12
:
< 0.3 V (field indicator)
External
resistance I
A12
:
R
ext
max. [k
Ω
] =
Residual ripple:
< 1% p.p., DC … 10 kHz
Response time
(IEC 770):
Approx. 200 ms
Output characteristic:
Linear
Power supply H
AC/DC power pack (DC and 45…400 Hz)
Table 1: Nominal voltages and tolerances
Nominal voltage
Tolerance
Instrument
U
N
version
24... 60 V
DC / AC
85...230 V
1
DC / AC
24... 60 V
DC – 15...+ 33%
DC / AC
AC
±
15%
85...230 V
AC
85...110 V
DC
1
For power supplies > 125 V, the auxiliary circuit should include an
external fuse with a rating
≤
20 A DC.
Power input:
Approx. 2.5 W resp.
≤
3 VA
Communication
Bi-directional communication of digital signals with an “intel-
ligent” two-wire transmitter designed for FSK and a HART or
company-specific protocol.
Frequency range:
500 Hz … 35 kHz
0.3 V
I
AN
[mA]
DC – 15...+ 33%
AC
±
15%
±
10%
– 15...+ 10%
Standard
(non-Ex)
Input circuit monitor
Pick-up level:
– Open-circuit
Input current < 3.6 mA,
adjustable in the works between
1 and 4 mA
– Short-circuit
Input current > 21 mA
adjustable in the works between
20 and 23 mA
Signalling modes
Output signals
A1 and A12:
–
Linear
output signal
For an open-circuit output
0 mA (with 4…20 mA)
– 5 mA (with 0…20 mA)
For a short-circuit output
approx. 26 mA
–
Increasing
output signal
Output approx. 115% of full-scale
value, e.g.
23 mA for output 0/4…20 mA
or
11.5 V for output 0/2…10 V
–
Decreasing
output signal
(only possible for live zero)
Output approx. 10% of full-scale
value, e.g.
2 mA for output 4…20 mA
or 1 V for output 2…10 V
Frontplate signals:
Failure signalled by red LED
Output contact AF:
1 relay, 1 potentially-free changeover
contact (see Table 2)
Table 2: Type of output contact
15 V (10 V)
I
AN
[mA]
Type of
protection
“Intrinsically
safe”
[EEx ia] IIC
Material
Symbol
Contact rating
Gold flashed
silver alloy
AC:
≤
2 A / 250 V
(500 VA)
DC:
≤
1 A / 0.1…250 V
(30 W)
Relay approved by UL, CSA, TÜV, SEV
Direction of action:
Adjustable by switch
– Relay “energized” or “de-
energized” in the case of a failure
Accuracy data
(acc. to DIN/IEC 770)
Basic accuracy:
Limit error
≤
±
0.2%
Including linearity and reproduci-
bility errors
Environmental conditions
Climatic rating:
Climate class 3Z acc. to
VDI/VDE 3540
Commissioning
temperature:
– 10 bis + 55
°
C
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