Beckhoff KL301 Series, Документация

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Product overview
KL301x, KL302x 9 Version: 4.1
2.2 KL302x - Introduction
Fig. 2: KL3021, KL3022
The KL3021 and EL3022 analog input terminals process signals in the range between 4 mA and 20 mA. The
current is digitized to a resolution of 12 bits, and is transmitted, in an electrically isolated form, to the higher-
level automation device. The input channels of the Bus Terminals have differential inputs and possess a
common, internal ground potential. An open lead or overload condition are detected, and the terminal status
is relayed to the controller via the K-bus. The Run LEDs indicate the exchange of data with the Bus Coupler,
while the Error LEDs indicate overload and wire breakage.