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2. Enabling RS485 Mode 

Set both dip switches on the left-hand side of the Modbus RTU to the “ON” position (down) 
to set the inverter to RS485 mode. 

RS485 Mode Enabled 

Left-hand side dip 

switches turned to 

ON (down) 

3. Addressing the Inverters 

Note

: Eaton inverters will automatically be assigned communication addresses by the LGate. 

No additional manual configuration is required. 

4. Terminating the Daisy Chain 

 

For the last or only inverter in the chain, turn the right-hand side termination switches 
ON (down) . 

 

For all other inverters, turn the right-hand side termination switches to OFF (up). 

Termination Switches Turned ON (down) 

Termination Switches Turned OFF (up) 

Summary of Contents for LGate 120

Page 1: ...LGate 120 Installation Guide Version 2 1 ...

Page 2: ...e Grade Monitoring 5 Verifying Installation 7 Accessing Data on the Device 9 Inverter Direct Monitoring 12 SMA Sunny Boy 13 Power One Aurora 15 Kaco Blueplanet 02xi 18 Fronius IG Plus 20 Emerson SPV 23 Eaton ISG PV 26 Additional Device Monitoring 28 Eaton Pow R EVSE 28 LGate 120 FAQ 31 ...

Page 3: ...copy of the Locus Energy LLC Hardware Product Limited Warranty please have your head office or program administrator contact your Locus Energy Account Manager Breaking the tamper seal on the LGate 120 Joining the RS485 or Ethernet cables to another conductor inside the meter socket Installing or operating the LGate 120 in any way not specified by this installation guide Laptop Power drill Wire str...

Page 4: ...4 The LGate 120 Datalogger RS485 Modbus Wires as shipped RS485 Modbus Wires Ethernet Port MAC ID LCD Screen ...

Page 5: ...ased separately between the PV system and the electrical panel Run the AC lines from the combined inverter output through the meter socket line side to load side and to the PV breaker on the electrical panel then attach the LGate 120 meter to the meter socket Ground the meter socket to the ground in the main panel L1 L2 G N L1 PV Breaker Utility PV System Line Side RS485 Modbus Connection L1 L2 Fo...

Page 6: ... the unit does not lose an internet connection for longer than 1 5 months to ensure that no data is lost Preferred Connection Method Cell Modem The LGate 120 comes installed with a cell modem No additional configuration is necessary for this method Secondary Connection Method Ethernet Cable Connect the LGate to a DHCP router with a CAT5 Ethernet cable as shown below Make sure this connection is co...

Page 7: ...modem connection contact technical support to troubleshoot 3 Meter Placement Check The arrow on the bottom right hand side of the LED screen indicates the direction of energy flow through the meter socket depending on the direction of the arrow Pointing toward the right see image at right The meter was installed correctly Meter Placement Arrow Pointing toward the left If the PV system is on and ge...

Page 8: ...e on the LED screen match the inverter output If power readings are negative the meter socket was installed backward Verify that the inverter wires running through the meter socket go from line side to load side top to bottom 6 Installation Confirmation Contact your office program administrator or lease provider to confirm the system is connected ...

Page 9: ...ings Logging into the LGate 1 Reset the LGate 120 by turning off the AC disconnect and breaker to the LGate for 30 seconds then back on again 2 Connect the LGate 120 directly to a laptop using the LGate s Ethernet cable 3 In a web browser enter 169 254 12 13 in the address bar and select Enter see below 4 Use the password networkconfig and select the Login button to enter the password protected me...

Page 10: ...default value in the Cell Mode drop down menu enables the cellular connection Navigating the Password Protected Menu Once logged into the LGate 120 you can view the following information 1 Basic information about the LGate IP address firmware type and MAC ID see below 2 All devices sending data and their instantaneous data readings see below 3 Network settings cell modem status static IP address p...

Page 11: ... value in the DHCP Mode drop down list in the Network Settings section B To configure the static IP address 1 Select false in the Cell Mode drop down list and Disabled in the DHCP Mode drop down list in the Network Settings section see below 2 Set the static address parameters Static IP Gateway Net Mask and DNS see below 3 Set the proxy parameters Proxy Address Proxy Username and Proxy Password se...

Page 12: ... the LGate and the first inverter or between inverters Run communication lines at least 1 foot away and in separate conduit from AC and DC power lines Ensure that there is good contact at all terminals secure all wires at the terminal blocks and check for metal to metal contact Ensure that each inverter contains all required components Inverter Direct Monitoring Inverter direct monitoring is a mon...

Page 13: ...inverter direct communication Please contact SMA or your inverter vendor about purchasing this card if necessary SMA Inverter Overview The RS485 RTU can be found on the left middle side of the inside of the inverter Extending RS485 Modbus Wires Extend the RS485 Modbus wires as shown below LGate 120 Crimp wires outside of the meter base i e in a junction box Gnd Shield To first inverter Crimp blue ...

Page 14: ...5 3 Last Only Inverter Last Inverter Termination jumper on Port A 2 Addressing the Inverters Note SMA inverters will automatically be assigned communication addresses by the LGate No additional manual configuration is required 3 Terminating the Daisy Chain For the last or only inverter in the chain install a termination jumper on Port A only For all other inverters do not install any termination j...

Page 15: ...sing these if necessary Power One Inverter Overview The RS485 RTU can be found on the top right side of the inside of the inverter RS485 RTU Power One Inverter Extending RS485 Modbus Wires Extend the RS485 Modbus wires as shown below LGate 120 Crimp wires outside of the meter base i e in a junction box Gnd Shield To first inverter Crimp blue brown inverter port T R together Crimp blue white brown ...

Page 16: ...Enter to select Settings the Password screen will appear see diagram at right 2 Enter the password 0000 press Up to find each value then Enter to select the number and move on to the next value 3 When finished entering the password press Enter 4 Press Enter in the next screen to select Address 5 Set the inverter address press Up to choose the value and Enter to move on to the next value see the ta...

Page 17: ...lug ins Power One 3000 3600 4200 Inverters Gray terminal blocks at right RJ12 cords below Power One 5000 6000 Inverters Gray terminal blocks in instructions RJ45 Ethernet cords below Types of Communication Terminals Power One inverters have several types of terminals for inverter direct communication terminal blocks and comm jacks While the pin out is different for each terminal block and comm jac...

Page 18: ...aco Inverter Overview The RS485 RTU is located in the connection box at the bottom of the inverter RS485 RTU Kaco Inverter Extending RS485 Modbus Wires Extend the RS485 Modbus wires as shown below LGate 120 Crimp wires outside of the meter base i e in a junction box Gnd Shield To first inverter Crimp blue brown inverter port B together Crimp blue white brown white inverter port A together Crimp gr...

Page 19: ... only inverter in the chain turn the termination switches to ON For all other inverters turn the termination switches to OFF 1 Connecting the LGate to Inverters Using shielded twisted pair cable wire the first inverter to the RS485 Modbus wires from the LGate see the previous page for information on extending RS485 wires Inverter 1 Termination Switches Turned to OFF LGate 120 Junction Box Inverter...

Page 20: ...r inverter vendor to purchase these items Fronius Inverter Overview The Com Card is placed on the bottom right of the inside of the inverter Fronius Inverter RTU Fronius Inverter Com Card 1 Connecting the LGate to Inverters Using shielded twisted pair cable wire the first inverter to the RS485 Modbus wires Inverter 1 Termination Plug Not installed LGate 120 Inverter 2 Termination Plug Not installe...

Page 21: ...it then press Enter to apply the changes 6 For the first inverter closest to the LGate enter 05 7 For the second inverter second closest enter 06 etc B Setting the Communication Protocol 1 In the Setup Menu press Menu 5 times to enter CODE the password protected menu 2 Enter the access code 22742 press Up to find the value then Enter to select the number and move on to the next value 3 When finish...

Page 22: ...nect off then the AC disconnect off then turn the AC disconnect on followed by turning the DC disconnect on 2 Reboot the LGate using the reset button or by turning the LGate breaker off and on E Verify that all settings in the above steps saved correctly 3 Terminating the Daisy Chain For the last or only inverter in the chain install a Fronius supplied termination plug in the open Ethernet port Fo...

Page 23: ...e inverter Emerson Inverter RTU Emerson Inverter Extending RS485 Modbus Wires Extend the RS485 Modbus wires as shown below LGate 120 Crimp wires outside of the meter base i e in a junction box Gnd Shield To first inverter Crimp blue brown inverter port A together Crimp blue white brown white inverter port B together Crimp green shield inverter port Gnd together Secure all other wires in the juncti...

Page 24: ...the Inverters A Addressing an inverter as inverter 1 3 B Addressing an inverter as inverter 2 1 3 C Addressing an inverter as inverter 3 etc 1 1 3 4 Saving changes exiting Configuration Mode 3 2 Setting the Inverter Addresses The address has to be set for each inverter installed inverter 1 is the closest inverter to the LGate in the communication chain inverter 2 is the second closest etc Note New...

Page 25: ... the Daisy Chain For the last or only inverter in the chain turn the termination switch to ON For all other inverters turn the termination switches to the left so ON is disabled Emerson SPV Inverter Termination Switch ...

Page 26: ...nverter 1 Termination Switch Turned to OFF LGate 120 Inverter 2 Termination Switch Turned to OFF Inverter 3 Last Inverter Termination Switch Turned to ON Eaton Modbus RTU RJ45 Port 1 Junction Box Crimp blue to inverter orange white Crimp blue white to inverter orange Crimp brown to inverter green white Crimp brown white to inverter green Crimp orange to inverter blue WARNING RJ45 ports 7 and 8 on ...

Page 27: ...he Inverters Note Eaton inverters will automatically be assigned communication addresses by the LGate No additional manual configuration is required 4 Terminating the Daisy Chain For the last or only inverter in the chain turn the right hand side termination switches ON down For all other inverters turn the right hand side termination switches to OFF up Termination Switches Turned ON down Terminat...

Page 28: ...ton Pow R EVSE Eaton Pow R EVSE Overview The Modbus RTU can be found within the device enclosure Eaton Pow R EVSE Modbus RTU Eaton Pow R EVSE Extending RS485 Modbus Wires Extend the RS485 Modbus wires as shown below LGate 120 Crimp wires outside of the meter base i e in a junction box Gnd Shield To first inverter Crimp blue brown EVSE port Data Line A together Crimp blue white brown white EVSE por...

Page 29: ...3 Eaton Pow R EVSE Shield Common Data Line B Data Line A Modbus Address 3 Shield Common Data Line B Data Line A Modbus Address 2 Shield Common Data Line B Data Line A Modbus Address 1 Junction Box 2 Addressing the Eaton Pow R EVSE Set the address for each device according to its position in the communication chain using the dip switches on SW1 as shown below Moving the switch to the left turns it ...

Page 30: ...st 3 devices or the cable run from the LGate to a single device is greater than 100 feet install a 150 ohm resistor between the data line wires at a connection point Note The 150 ohm resistor connection point should be purchased separately Shield wire from previous device Ground wire from previous device wire from previous device wire from previous device Last Only Device Shield Common Data Line B...

Page 31: ...t is revenue grade accuracy The LGate 120 has been ANSI C12 20 certified accurate to 0 2 only when installed as specified below Only one wire runs through each leg of the meter socket Only PV loads are being measured i e no loads back up system batteries etc 2 What is shielded twisted pair cable Locus Energy requires using shielded twisted pair cable for all RS485 and Modbus communication lines sh...

Page 32: ...the cell modem Continuous high speed internet access ex DSL cable satellite dial up will not work Dynamic IP DHCP network see Non DHCP Network Connections section below for alternatives TCP port 80 open outbound with access to the primary DNS server or port 443 for secure networks RJ 45 Ethernet connection 5 How do I set up a non DHCP network connection A Assign the LGate a DHCP reservation on the...

Page 33: ...o communicate There are two methods of testing the strength of the cellular signal at the installation site Using an AT T cell phone check the reception at the site in general one bar indicates sufficient signal strength but more bars are preferable to establish the initial connection Visit AT T s website to view the cellular reception in the region of the site select Data in the Domestic section ...

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