Connecting Multiple Devices - Huawei SmartLogger2000 Quick Manual

NOTICE
1. Verify that the COM+ (RS485A) port on the SmartLogger connects to protection port 2 (or 8) on
the RS485 signal SPD, and that the COM– (RS485B) port on the SmartLogger connects to
protection port 6 (or 12) on the RS485 signal SPD.
2. Verify that surge port 1 (or 7) on the RS485 signal SPD connects to terminal 1 (RS485A IN) on
the SUN2000 terminal block, and that surge port 5 (or 11) on the RS485 signal SPD connects to
terminal 3 (RS485B IN) on the SUN2000 terminal block.
6.4

Connecting Multiple Devices

NOTICE
1. A maximum of 200 devices can be connected to one SmartLogger. You are advised to connect
fewer than 30 devices to each RS485 route. Each SmartLogger can be connected to a maximum
of 80 inverters.
2. Verify that devices using the same protocol are connected to the same COM port. Devices using
different protocols (for example, the box-type transformer which uses the IEC103 protocol and the
electricity meter which uses the DL/T645 protocol) need to be connected to separate COM ports.
Recommended Connection Mode
7
Connecting Cables to AC Ports
NOTE
1. If the SUN2000 is equipped with a PLC device, the SmartLogger can communicate with the
SUN2000 through an AC power cable.
2. If the SmartLogger uses an AC power cable for communication, an MCB or a knife switch needs
to be installed to prevent device damage in the case of short circuits.
3. Each SmartLogger can be connected to a maximum of 80 SUN2000 inverters.
4. If the SmartLogger is connected to the SUN2000 through an AC power cable, no RS485
communications cable needs to be connected.
WARNING
Before connecting the AC power cable, ensure that the upstream switch of the AC power cable is
turned off.
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