HART Multiplexer System KFD*-HM*-16
Product Specifications
2018-04
7
2 Product Specifications
2.1 Device Versions
This manual describes the following devices:
• HART multiplexer master KFD2-HMM-16, hereinafter referred to as the multiplexer master
• HART multiplexer slave KFD0-HMS-16, hereinafter referred to as the multiplexer slave
2.2 Function
The HART multiplexer system consists of one HART multiplexer master KFD2-HMM-16 and
several HART multiplexer slaves KFD0-HMS-16. The HART multiplexer system is used
to establish a HART connection to analog field devices and thereby maintain the conventional
analog 4 mA to 20 mA circuits. The devices of the HART multiplexer system act as gateways
between the field devices and the control side.
The devices of the HART multiplexer system can be used in the Zone 2 hazardous area or
in the non-hazardous area. The devices are supplied with 24 VDC. The devices are connected
to a maintenance station or the process control system via an RS-485 interface.
The supply, the analog signals, and the RS-485 interface are galvanically isolated from each
other. The individual HART channels are decoupled. This does not affect
the 4 mA to 20 mA signal.
Using the configuration software, you can search for available field devices automatically and
query the HART variables of the field devices automatically.
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