Huawei SmartLogger2000 User Manual page 225

SmartLogger2000
User Manual
Procedure
Connect the PE cable.
1.
2.
----End
Connect the communications cable.
1.
2.
Issue 04 (2018-04-10)
 Protection ports connect to the COM ports on the SmartLogger. Port 4 is not connected.
 Surge ports connect to the RS485 ports on other devices. Port 3 is the ground port.
 Protection ports and surge ports must not be confused.
 One RS485 signal SPD can protect two COM ports.
 Protection ports 2 and 6 and surge ports 1 and 5 form an RS485 surge protection port for protecting
one COM port. Protection ports 8 and 12 and surge ports 7 and 11 form another RS485 surge
protection port for protecting another COM port.
 An RS485 signal SPD port supports cables with a maximum cross-sectional area of 2.5 mm
devices need to be connected to this port in parallel, use cables with a cross-sectional area of 1 mm
and connect not more than two cables to the same port.
Remove 8 mm of the insulation layer from the PE cable using a wire stripper.
Insert the bare core wire into port 3 on the RS485 signal SPD, and secure the cable.
Figure A-4 Connecting a PE cable
 Connect the other end of the PE cable to the ground bar.
 Recommended: To enhance the corrosion resistance of a ground terminal, silica gel or paint might be
needed.
Connect one end of the cable to the COM port on the SmartLogger. For details, see
Connecting Cables to the Terminal Block on the COM
Insert the bare core wire at the other end into a protection port on the RS485 signal SPD,
and secure the cable.
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A Installing and Wiring the RS485 Signal SPD
Port.
2
. If
2
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