Huawei SmartLogger3000 User Manual page 26

SmartLogger3000
User Manual
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Power Ports
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Select the intermediate relay with a free-wheeling diode in the coil. Otherwise, the device
may be damaged.
Issue 03 (2020-01-10)
USB Port
USB
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.
COM Port
COM1, COM2,
and COM3
Input power ports: There are two input power ports.
Input Power Port
12 V input
power port
24 V input
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.
Copyright © Huawei Technologies Co., Ltd.
Description
After a USB flash drive is inserted
into the USB port, you can
perform local maintenance
operations on the SmartLogger,
such as firmware upgrade and data
export.
Description
+ RS485A, RS485 differential
signal+
–
RS485B, RS485 differential
signal–
Description
DC IN DC2.0 input port, which supports
12 V DC input and is used to
12 V, 1 A
connect to a power adapter.
DC IN 2-pin cord end terminal, which
supports 24 V DC input.
24 V, 0.8 A
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.
2 Product Overview
18