Fox ESS

The Teleport can connect to Fox ESS G-MAX battery systems using Modbus TCP over ethernet or Modbus RTU over RS485. The battery system can be directly controlled via the Teleport to manage the available mode of operation:

• Real Power Dispatch

Supported models:

• Fox ESS G-MAX EMS
• Fox ESS G-MAX EMU

Warning

The G-MAX EMS module has a 1-second response time. This makes it less suitable for active control loops requiring rapid asset response. Fox ESS provides a solution where the Teleport communicates directly with the PCS inverter’s EMU unit, enabling faster control. Please contact the OEM for more information on this feature.

Fox ESS G-MAX EMS

Supported properties (EMS version)

Supported properties

• batteryStatus
• energy.charged*
• energy.discharged*
• frequency*
• activePower
• reactivePower
• stateOfCharge
• acVoltageMediumVoltage.phase.l1*
• acVoltageMediumVoltage.phase.l2*
• acVoltageMediumVoltage.phase.l3*
• acVoltageMediumVoltage.line.l1*
• acVoltageMediumVoltage.line.l2*
• acVoltageMediumVoltage.line.l3*
• acCurrentMediumVoltage.phase.l1*
• acCurrentMediumVoltage.phase.l2*
• acCurrentMediumVoltage.phase.l3*
• threePhaseConnectionType
• powerFactor*
• batteryEnergyStorageSystems[].cellTemperature.max
• batteryEnergyStorageSystems[].cellTemperature.min
• batteryEnergyStorageSystems[].racks[].identifier
• batteryEnergyStorageSystems[].racks[].dcVoltage
• batteryEnergyStorageSystems[].racks[].dcCurrent
• batteryEnergyStorageSystems[].racks[].cellVoltage.max
• batteryEnergyStorageSystems[].racks[].cellVoltage.min
• batteryEnergyStorageSystems[].racks[].cellVoltage.cellIdMax
• batteryEnergyStorageSystems[].racks[].cellVoltage.cellIdMin
• batteryEnergyStorageSystems[].racks[].cellTemperature.max
• batteryEnergyStorageSystems[].racks[].cellTemperature.min
• batteryEnergyStorageSystems[].racks[].cellTemperature.cellIdMax
• batteryEnergyStorageSystems[].racks[].cellTemperature.cellIdMin

Unsupported properties

• acCurrentMediumVoltage.line
• availableActivePower.charge
• availableActivePower.discharge
• availableReactivePower.inject
• availableReactivePower.absorb
• batteryEnergyStorageSystems[].stateOfCharge
• batteryEnergyStorageSystems[].availableEnergy
• batteryEnergyStorageSystems[].roomTemperature
• batteryEnergyStorageSystems[].racks[].cellVoltage.average
• stateOfHealth
• availableEnergy
• ratedEnergy

* = optional, OEM meter must be connected to EMS

Modbus TCP over ethernet

The default communication settings for the system are listed below. If any of these setting are changed, please notify us so we can reconfigure the Teleport accordingly. When connecting to the EMS please provide the chosen Slave ID, IP address and Subnet Mask as configured on the asset and the router.

Default communication settings:

• Port: 502
• IP adress: 192.168.1.161

Configuration

On the LCD screen on the asset, verify that the following settings are correct:

• ESCCU switch: ON
• Grid Connection: ON
• Control terminal: Remote
• Control mode: Total

Once these settings are verified, the system should be operational and the Teleport should have control. If this is not the case, please verify that the following settings are disabled:

Fox ESS G-MAX EMU

Supported properties (EMU version)

Supported properties

• energy.charged
• energy.discharged
• frequency
• activePower
• reactivePower
• stateOfCharge
• stateOfHealth
• availableActivePower.charge
• availableActivePower.discharge
• acVoltageMediumVoltage.phase.l1
• acVoltageMediumVoltage.phase.l2
• acVoltageMediumVoltage.phase.l3
• acVoltageMediumVoltage.line.l1
• acVoltageMediumVoltage.line.l2
• acVoltageMediumVoltage.line.l3
• acCurrentMediumVoltage.phase.l1
• acCurrentMediumVoltage.phase.l2
• acCurrentMediumVoltage.phase.l3
• batteryEnergyStorageSystems[].identifier
• batteryEnergyStorageSystems[].cellTemperature.min
• batteryEnergyStorageSystems[].cellTemperature.max
• batteryEnergyStorageSystems[].roomTemperature
• batteryStatus
• powerFactor

Unsupported properties

• availableEnergy
• availableReactivePower.inject
• availableReactivePower.absorb
• ratedEnergy
• acCurrentMediumVoltage.line
• batteryEnergyStorageSystems[].stateOfCharge
• batteryEnergyStorageSystems[].availableEnergy
• batteryEnergyStorageSystems[].racks[]
• batteryEnergyStorageSystems[].racks[].identifier
• batteryEnergyStorageSystems[].racks[].dcVoltage
• batteryEnergyStorageSystems[].racks[].dcCurrent
• batteryEnergyStorageSystems[].racks[].cellTemperature.min
• batteryEnergyStorageSystems[].racks[].cellTemperature.cellIdMin
• batteryEnergyStorageSystems[].racks[].cellTemperature.max
• batteryEnergyStorageSystems[].racks[].cellTemperature.cellIdMax
• batteryEnergyStorageSystems[].racks[].cellVoltage.min
• batteryEnergyStorageSystems[].racks[].cellVoltage.cellIdMin
• batteryEnergyStorageSystems[].racks[].cellVoltage.max
• batteryEnergyStorageSystems[].racks[].cellVoltage.cellIdMax
• batteryEnergyStorageSystems[].racks[].cellVoltage.average

Modbus TCP over ethernet (recommended)

The default communication settings for the EMU are listed below. If any of these setting are changed, please notify us so we can reconfigure the Teleport accordingly. When connecting to the EMS please provide the chosen Slave ID, IP address and Subnet Mask as configured on the asset and the router.

Default communication settings:

• Port: 502
• IP adress: 192.168.1.161

Modbus RTU over RS485

1. Connect the serial cable between the serial port of the Teleport and the serial port of the Fox ESS G-MAX EMU.

2. Check that the default settings are:

   • Baud rate: 115200
   • Data bits: 8
   • Stop bits: 1
   • Parity: None