KL304x, KL305x - Single-, Dual- and Four-Channel Analog Input Terminals 0 to 20 mA and 4 to 20 mA, Single ended

KL3041, KL3051 – Introduction

KL3041, KL3051

The job of the KL3041 and KL3051 analog input terminals is to supply power to measuring transducers located in the field, and to transmit analog measurement signals with electrical isolation to the automation device.
The KL3041 terminal processes signals in the range from 0 mA to 20 mA.
The KL3051 terminal processes signals in the range from 4 mA to 20 mA.
The voltage for the sensors is supplied to the terminals via the power contacts. The power contacts can optionally be supplied with operating voltage in the standard way or via a power feed terminal (KL9xxx) with electrical isolation. The input electronics is independent of the supply voltage of the power contacts. The 0 V rail is the reference potential for the inputs. The Run LEDs indicate the exchange of data with the Bus Coupler, while the Error LEDs indicate overload and wire breakage.