Endress+Hauser Fieldgate FXA520, Руководство по эксплуатации

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3 Function and System Design Fieldgate FXA520
16 Hauser
3.5 System architecture
3.5.1 HART point-to-point
Fieldgate FXA520 allows two HART devices to be connected directly to its input channels. When
Fieldgate has been ordered in the appropriate version, the devices may be located in hazardous
areas. The inputs conform to SIL 2 level for 4...20 mA loops (IEC 61508). The devices can be
parametrized both locally or remotely by using FieldCare or a service tool as shown below.
Fig. 3-7: System architecture for HART point-to-point connections
3.5.2 Analog input 4...20 mA
Two 4...20 mA devices can also be connected to Fieldgate FXA520. With the appropriate
transmitter supply module, the devices may also be located in hazardous areas. The devices cannot
be parametrized, but the outputs can be scaled and linearized in the Fieldgate Web server.
Fig. 3-8: System architecture for 4..20 mA connections
-
Commubox FXA191/
Commubox FXA195
.
Fieldgate
FXA520
Fieldgate
FXA520
HAUSER
RN 221N HAUSER
RN 221N
Analog
Ethernet
GSM
Web browser
HTTP script
FieldCare
…
e.g. 2 x RN221N-B …
e.g. RNS221
WWW
FieldCare
Service tool
FieldCare
Service tool
-
.
4...20 mA
4...20 mA
Fieldgate
FXA520
Fieldgate
FXA520
HAUSER
RN 221N HAUSER
RN 221N HAUSER
RN 221N HAUSER
RN 221N
Analog
Ethernet
GSM
Web browser
HTTP script
...
e.g. 2 x RN221N-A … e.g. 2 x RN221N-B …
WWW