15
4. Brief description
The purpose of the isolating amplifier
SIRAX TV 808
is to
electrically insulate input and output signals, respectively
to amplify and/or change the signal level or type (current or
voltage) of the input signals.
5. Overview of the parts
Figure 2 shows those parts of the device of consequence
for electrical connections and other operations described in
the Operating Instructions.
Fig. 2
(2)
Data card
(6)
Type label
(7)
Fastener
Red LED without function
ON
Green LED for indicating device standing by
6. Technical data
Measuring input
DC current:
Standard ranges
0…20 mA, 4…20 mA, ± 20 mA
Limit values 0…0.1 to 0…50 mA
also live-zero,
start value > 0 to
≤
50% final value
– 0.1…0…+ 0.1 to
– 50…0…+ 50 mA
also bipolar asymmetrical
R
i
= 15
Ω
DC voltage:
Standard ranges
0…10 V, 2…10 V, ± 10 V
Limit values
0…0.06 to 0…40,
Ex max. 30 V
also live-zero,
start value > 0 to
≤
50% final value
– 0.06…0…+ 0.06 to
–40…0…+ 40 V,
Ex max. – 30…0…+ 30 V
R
i
= 100 k
Ω
(7)
(6)
ON
(2)
Span
Zero
without
function
Overload:
DC current
continuously 2-fold
DC voltage
continuously 2-fold
Measuring output
DC current:
Standard ranges
0…20 mA, 4…20 mA, ± 20 mA
Limit values
0…1 to 0…20 mA
0.2…1 to 4…20 mA
– 1…0…+ 1 to – 20…0…+ 20 mA
Burden voltage:
12 V
R
ext
max. [k
Ω
] =
12 V
I
AN
[mA]
I
AN
= Output circuit full-scale value
DC voltage:
Standard ranges
0…10 V, 2…10 V, ± 10 V
Limit values
0…1 to 0…10 V
0.2…1 to 2…10 V
– 1…0…+ 1 to – 10…0…+ 10 V
Burden:
≥
2 k
Ω
Current limiter at
R
ext
max.:
Approx. 1.1
×
I
AN
for current out-
put
Voltage limiter at
R
ext
=
∞
:
Approx. 13 V
Residual ripple in
output current:
< 0.5% p.p.
Response time:
< 50 ms
Power supply H
AC/DC power pack (DC and 45...400 Hz)
Table 1: Nominal voltages and tolerances
Nominal
voltage U
N
Tolerance
Instrument
version
24... 60 V
DC / AC
DC – 15...+ 33%
AC ± 15%
Standard
(non-Ex)
85...230 V
1
DC / AC
24... 60 V
DC / AC
DC – 15...+ 33%
AC ± 15%
Type of
protection
“Intrinsically safe”
[EEx ia] IIC
85...230 V
AC
± 10%
85...110 V
DC
–15...+ 10%
1
For power supply > 125 V, the auxiliary circuit should include an
external fuse with a rating
≤
20 A DC.
Power input:
≤
1.2 W resp.
≤
3 VA
Accuracy data
(acc. to DIN/IEC 770)
Basic accuracy:
Limit error
≤
± 0.2%
Including linearity and reproducibility
errors
Environmental conditions
Commissioning
temperature:
– 10 to + 40 °C
Operating temperature: – 25 to + 40 °C,
Ex – 20
to + 40 °C
Storage temperature:
– 40 to + 70 °C
External resistance:
Содержание SIRAX TV 808-61
Страница 2: ...2 ...