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3KXN674200R4101
5
Electrical connection
Connect the FieldKey in series with the 4 to 20 mA loop.
1. Use the connector on the negative (–ve) wire as shown.
2. Install the AO coupler for use with positioners.
Black (–ve) Connector
Red (+ve)
Push to insert FieldKey wire
Insert loop wire
Connector (–ve Wire)
FieldKey
+ve
–ve
–ve
+ve
+ve
Positioner housing
4 to 20 mA loop
AO Coupler
T1 = FieldKey negative (Black)
T2 = Loop negative
T3 = Loop positive
T4 = Instrument positive
6
Adapter commissioning
Information required:
the Join Key (as set in the Gateway)
the Network ID (as set in the Gateway)
4 to 20 mA
HART tree for FieldKey NHU200 Wireless Adapter
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