I

I/O-Modules
Fieldbus Terminals
2-Channel Loop-Powered 0/4 - 20 mA Analog Input Terminal

Product Description

The purpose of the KL3042 and KL3052 analog input terminals is to power measuring
transducers in the field and to transfer analog measured signals in an electrically
isolated fashion to the control system. The supply voltage for the sensors is routed to
the terminals via the power contacts. The Power contacts can be powered optionally via the
standard power supply or an incoming feeder terminal (KL9xxx) with electrical isolation
for the operating voltage. The electronic input circuitry is independent of the supply
voltage for the power contacts. The "0 V bar" is the reference potential for the
inputs. The Error LEDs indicate overloads and wire breakages and the Run-LEDs indicate the
data-transfer to the bus coupler.

Technical data	KL3042	KL3052
Number of inputs	2
Power supply	24 V DC via the Power contacts
Signal current	0 ... 20 mA	4 ... 20 mA
Internal resistance	50 W typ.
Surge voltage resistance	35 V max.
Resolution	12 bits
Conversion time	app. 2 ms
Measuring error (total measuring range)	< ± 0.3% (of the upper range value)
Electrical isolation	500 Vrms (K-Bus / signal voltage)
Current consumption from K-Bus	65 mA typ.
Bit width in the process image	I: 2 x 16 bits data, (2 x 8 bits control/status optional)
Configuration	no address or configuration settings
Operating temperature	0°C ... +55°C
Storage temperature	-25°C ... +85°C
Relative humidity	95%, no condensation
Vibrations/Shock resistance	conforms to IEC 68-2-6 / IEC 68-2-27
EMC resistance burst / ESD	conforms to EN 50082 (ESD, Burst) / EN 50081
Installation position	any
Type of protection	IP20

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