1-channel accurate resistor bridge evaluation KL3356
Error Ref.
Ref.
Measure
Run LED
Error Diff. 
Calibr. 
Diff. 
Power LED 
Power contact
+UV
Power contact
-UV
+UD
-UD
-Uv
Shield
+UREF
-UREF
+Uv
Shield
Top view 
Contact assembly 
The supply voltage UV is
supplied from an external
source (e.g. KL9512). The
maximum input voltage UREF
is limited to 12 V.
extended shock and vibration range

KL3356 | 1-channel accurate resistor bridge evaluation

The KL3356 analog input terminal permits direct connection of a resistor bridge. An improved input circuit makes the KL3356 significantly more accurate than the KL3351. The ratio between the bridge voltage UD and the supply voltage UREF is determined in the input circuit. In order to achieve good long-term stability, the complete circuit is re-calibrated at least every three minutes. This procedure can be synchronised by the control in order to prevent the calibration leading to a delay in the production process.

Technical data KL3356 | KS3356
Number of inputs 2, for 1 resistor bridge
Power supply via the K-bus
Signal voltage UD: -20…+20 mV
UREF: -12…+12 V
Signal voltage UD, UREF -20…+20 mV, -12…+12 V
Technology DMS connection
Internal resistance > 200 kΩ (UREF), > 1 MΩ (UD)
Power supply UV via power contacts
Conversion time < 250 ms, configurable
Filter 50 Hz, configurable
Resolution 16 bit
Measuring error < ±0.01 % (relative to full scale value)
Current consumption power contacts only load
Current consumpt. K-bus typ. 85 mA
Bit width in the process image input: 2 x 16 bit data (2 x 8 bit control/status optional)
Special features increased measuring accuracy, self-calibration
Weight approx. 75 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Pluggable wiring for all KSxxxx Bus Terminals
Approvals CE, UL, Ex