User's Manual

Table Of Contents
SmartLogger3000
User Manual
2 Product Overview
Issue 04 (2020-03-11)
Copyright © Huawei Technologies Co., Ltd.
26
COM ports: RS485 communications port, supporting three independent RS485 channels
and the access of devices that comply with the Modbus-RTU, IEC103, or DL/T645
protocol.
Appearance
COM Port
Description
COM1, COM2,
and COM3
+
RS485A, RS485 differential
signal+
RS485B, RS485 differential
signal–
Power Ports
Input power ports: There are two input power ports.
Appearance
Input Power Port
Description
12 V input
power port
DC IN
12 V, 1 A
DC2.0 input port, which supports
12 V DC input and is used to
connect to a power adapter.
24 V input
power port
DC IN
24 V, 0.8 A
2-pin cord end terminal, which
supports 24 V DC input.
When the device connects to the
power supply through the 12 V
input power port, this port can be
used as the 12 V output power
port.
12 V output power port: There is one 12 V output power port. Its maximum output
capability is 0.1 A. The port is used to drive the coil of the intermediate relay in the
export limitation or audible and visual alarm scenario.
Select the intermediate relay with a free-wheeling diode in the coil. Otherwise, the device
may be damaged.
Appearance
Output Power Port
Description
12 V output
power port
GND
Power supply
12V
Power supply+