HD Bus Terminal, 8-channel input terminal PT1000, Ni1000 (RTD); NTC sensors, potentiometers KL3208
Signal LEDs
1…8
Error LEDs
9...16
Power contact
+24 V
Power contact 0 V
+R1 
+R2 
+R3 
+R4 
+R5 
+R6 
+R7 
+R8 
-R1
-R2
-R3
-R4
-R5
-R6
-R7
-R8
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

KL3208-0010 | HD Bus Terminal, 8-channel input terminal PT1000, Ni1000 (RTD); NTC sensors, potentiometers

The KL3208-0010 analog input terminal enables connection of eight resistance sensors. The Bus Terminal’s circuitry can handle sensors using the 2-wire technique. Linearisation over the full temperature range is realised with the aid of a microprocessor. The temperature range can be selected freely. The Bus Terminal’s standard settings are: resolution 0.01 °C within the temperature range of PT/Ni1000 sensors. The error LEDs indicate sensor faults (e.g. a broken wire).

The HD Bus Terminals (High Density) with increased packing density feature 16 connection points in the housing of a 12 mm terminal block.

Technical data KL3208-0010
Number of inputs 8
Power supply via the K-bus
Technology 2-wire
Sensor types PT1000 (default), Ni1000, potentiometer 1/5/10 kΩ, NTC 1.8 k/2.2 k/3 k/5 k/10 k/20 k/100 k
Connection method 2-wire
Measuring range -50…+150 °C (depending on sensor type)
Conversion time ~ 1 s
Measuring current < 0.5 mA typ.
Resolution 0.01 °C per digit
Measuring error -20…+60 °C: ±0.25 °C at 25 °C ambient temperature; -50…+150 °C: ±1.5 °C (for PT/Ni sensors)
Electrical isolation 500 V (K-bus/signal voltage)
Current consumption power contacts
Current consumption K-bus typ. 85 mA
Bit width in the process image input: 8 x 16 bit data (8 x 8 bit control/status optional)
Configuration no address setting, configuration via Bus Coupler or controller
Conductor types solid wire, stranded wire and ferrule
Conductor connection solid wire conductors: direct plug-in technique; stranded wire conductors and ferrules: spring actuation by screwdriver
Rated cross-section solid wire: 0.08…1.5 mm²; stranded wire: 0.25…1.5 mm²; ferrule: 0.14…0.75 mm²
Special features open-circuit recognition, cable resistance calibration, particularly suitable for building automation
Weight approx. 75 g
Operating/storage temperature -25…+60 °C/-40…+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
Approvals CE, UL, Ex