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To connect a 4-20mA sensor that requires “loop” power:
-
Isolate the MelcoREMOTE supply.
-
Connect the positive (+) terminal on the sensor to the
RS-485 Port 1+
or
RS-485 Port 2+
terminal on the
MelcoREMOTE.
-
Connect the negative (-) terminal on the sensor to the required positive (+) configurable input terminal on
MelcoREMOTE (e.g.
IN01+
).
The maximum cable length for 4-20mA inputs is 1000m. This represents a cable loss of < 5V at 25mA.
8.2. Connecting Outputs
For connecting contactors (nominal 100mA coil) to digital outputs, the maximum cable length is 50 metres (16/0.2, tri-
rated cable). This represents a cable loss of <1V @ 80mA (typical contactor current).
Summary of Contents for MelcoREMOTE
Page 2: ...Page 2 of 52 ...
Page 7: ...Page 7 of 52 Fig 2 Overview I 2 ...
Page 46: ...Page 46 of 52 RS 485 Expansion Devices Address Description ...
Page 47: ...Page 47 of 52 Centralised Controllers Modbus TCP Devices IP Address Description ...
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Page 51: ...Page 51 of 52 ...
