Smart Meter & Ct Connection; Dred / Remote Shutdown Connection - LG LGES-5048 User Manual

2.4.4 Smart Meter & CT Connection
Make sure AC cable is totally isolated from AC power before connecting Smart Meter &
CT.
The Smart Meter with CT in product box is compulsory for LGES system installation, used to
detect grid voltage and current direction and magnitude, further to instruct the operation
condition of LGES inverter via RS485 communication.
Note:
1. The Smart Meter with CT is well con gured, please do not change any setting on Smart Meter.
2. One Smart Meter can only be used for one LGES series inverter.
3. If LGES is used in a three-phase grid with a three-phase smart meter, the there CTs must be used for
one Smart Meter, and must be connected on the same phase with Smart Meter power cable.
Smart Meter & CT Connection Diagram
• For Single phase Grid
PE
N
L
15
To Smart Meter
• For Three phase Grid
PE
N
L3
L2
L1
Power Meter
To Smart Meter
Note:
1. CT cable is 3m as default, please do not extend.
2. Smart Meter communication cable (RJ45) is attached on the inverter ("To Smart Meter" cable), could be extended to max 100m, and must
use standard RJ45 cable and plug, as below:
3. Single-phase Smart Meter GM1000 is supplied with inverter. For 3-phase grid, use optional GM3000 (available from distributor)
Grid
CT
Load
Grid
CT A connect to L1
CT C
CT B connect to L2
CT B
CT A
CT C connect to L3
Load
Detailed Pin Function Of Each Port On ES
BMS： CAN communication is configured by default. If 485 communication is used, please contact
after-sales to replace with the corresponding communication line.
Position Color BMS Function Smart Meter Function
1 Orange&white 485_A2
Orange
2 NC
3 Green&white 485_B2
4 Blue CAN_H
5 Blue&white CAN_L
6 Green NC
7 Brown&white NC
8 Brown NC
Smart Meter LED Indications
STATUS OFF ON
POWER Not working Working
ENERGY / Importing
COM Blink one time when it transfer data to inverter
2.5 DRED & Remote Shutdown Device Connection
DRED (Demand response enabling device) is used for Australia safety requirements. Inverter
integrates control logic and provides an interface for DRED. The DRED is not provided by inverter
manufacturer.
Detailed connection of DRED & Remote Shutdown are shown below:
Step 1
Screw this plate off from the inverter.
Note: DRED should be connected through "DRED Port" as the gure shows.
EMS
NC 485_A
485_B
NC
485_B1 485_A
NC NC
NC NC
485_A1 485_B
485_B1 NC
485_A1 NC
Blinking
/
Exporting
POWER
ENERGY
COM
16