154
saia-pcd.com
Switch cabinet components
System properties
Available in two versions with different input ranges
Conversion time 20 ms
0.5% accuracy at full scale
Output electrically isolated from input with optical isolating amplifier
Technical data for isolating amplifiers DC/DC KFD11
and KFD12
Input ranges ¹
)
KFD11
KFD12
0…10 VDC, input impedance 200 kΩ or
0…20 mA, load 47 Ω ²)
0…75 VDC, input current 0…20 mA or
0…60 mV, input current 0… 60 μA ³
)
Output ranges ¹
)
0…10 VDC, load (≥3 kΩ); 0…20 mA, load
(≤500 Ω)
Input/output
electrically isolated with optical isolating
amplifier
Conversion time
20 ms
Short-circuit proof
Yes, 1 minute, short-circuit current <100 mA
Status display
LED green: supply voltage present
Isolating characteristics
800 VDC between supply, input and output
Precision
0.5% of final value
Supply voltage
19…70 VDC or 24 V ±20% full-wave rectified
Power consumption
1.0…2.4 W depending on voltage and load
Duty cycle
100%
Connections
screw terminals for 1 × 0.5 mm² to 2 × 2.5 mm²
Mounting
surface mounting; snap-on mounting onto DIN
rail in accordance with DIN EN60715 TH35 (for-
merly DIN EN50022) (1 × 35mm) or screw fixing
with adapter (accessory) and 2 screws M4
Ambient temperature
Operation Storage
0…50°C
–25…+70°C
Humidity
95% RH with no condensation
EMC/interference immu-
nity
EN 61000-4-4 (2 kV) at input and output
EN 61000-4-4 (4 kV) at supply
EMC / Emission
EN 55022, class B
¹
)
2 input ranges/2 output ranges selectable with 2 slide switches on front panel
²
)
Overvoltage protection by stress limiter, 27V max.
³
)
Overcurrent or overvoltage protection by stress limiter
Dimensions
Block diagram
Ordering information for isolating amplifiers DC/DC
KFD11 and KFD12
KFD11JVTN
Isolating amplifier DC/DC with input and
output ranges 0…10 VDC or 0…20 mA
KFD12JVTN
Isolating amplifier DC/DC with input ranges
0…75 VDC or 0…60 mA and output ranges
0…10 VDC or 0…20 mA
5.4
SBC isolating amplifiers DC/DC KFD1x
The SBC isolating amplifiers KFD1x isolate individual analogue channels not only from input to output, but also from the
supply and frame ground potential. This electrical separation is particularly recommended for long lines in large installations.
However, the SBC KFD1x can also be used to amplify a weak signal and convert it into a noise-proof current signal.
22.5
78.8
35
7
96
101
+
+
–
–
0…20 mA
0…20 mA
+ –
0…10 V
DC
0…75 V
DC
0…60 mV
DC
0…10 V
DC
Supply
