Endress+Hauser Fieldgate FXA520, Operating Instructions Manual

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4 Hardware Installation Fieldgate FXA520
26 Hauser
4.2.6 4... 20 mA input
Channels 1 and 2 can be used to connect 4...20 mA transmitters.
Fig. 4-12: Wiring of 4...20 mA devices
4.2.7 4...20 mA/binary input via FXZ520 input module
Up to 28x 4...20 mA devices and/or binary inputs can be connected to the Fieldgate by using the
up to seven FXZ520 analog/digital input module. For connection of devices to FXZ520 see Compact
Instructions KA272F/00/a6
Fig. 4-13: Wiring of RS-485 bus: each FXZ520 must have a different address range setting
- - + +
CH1 CH2
4..20 mA
23 24 21 22
Fieldgate FXA520
+ + – –
PSU PSU
+
–
- Prosonic T
- Cerabar T
… - Cerabar T
- Prosonic T
…
CH = Channel
e.g. e.g.
4..20 mA 4..20 mA
+ –
PSU = Power supply unit
26 27 28
FXA520
A
4 5 6
B
RS-485
FXZ520 AI/DI
FXZ520 AI/DI
4 5 6
FXZ520 AI/DI
4 5 6
FXZ520 AI/DI
4 5 6
A
4 5 6
B
RS-485
FXZ520 AI/DI
A
4 5 6
B
RS-485
FXZ520 AI/DI
A
4 5 6
B
RS-485
FXZ520 AI/DI
A B
RS-485
A B
RS-485
A B
RS-485
RS-485
Address
range
switch
A B
RS-485
#1 #3 #5 #7
#2 #4 #6
T
T