Ingeteam
End-of-line resistor and RS485 bus
The 120Ω end-of-line resistor should be connected between connection points 41 and 42, which also
coincide with the RS485 bus terminals.
The RS-485 communication should be made as indicated in the following table:
4.2 Indirect measure wattmeter
4.2.1
EM530
All connections must be made with the power disconnected.
The protective covers protect against direct electrical contact. They should be removed in order to
make the connections and replaced once the connections have been made.
Make the connection as shown in the following figure, installing current transformers in each phase.
12
Pin
42
41
43
A
Voltage inputs
D
Navigation and settings buttons
E
Digital input, digital output, and communication connections
G
Current inputs
Signal
RS-485 B (+)
RS-485 A (-)
GND
SMART DLM
ABW2012IQM01_E.docx