SCU System Control Unit and MBMS Master Battery Management System

Overview

The SCU (System Control Unit) is a multi-purpose device that takes readings from equipment over RS-485 Modbus, TCP/IP or CAN bus, records them to an SD card and forwards them to a local server or to the Leonics-MoC portal for remote monitoring and control. It doubles as a data logger, a simple microgrid controller and a protocol converter. The MBMS is built specifically for lithium banks: it reads the batteries over RS-485 and monitors and balances up to 39 modules, with balancing selectable by state of charge or by battery voltage. Both units take firmware upgrades, commands and configuration over the air, and both are reached through a web browser.

Key Features

• ✓Two units — the SCU for whole-system control and logging, the MBMS for lithium battery management
• ✓The SCU reads over RS-485 Modbus, TCP/IP or CAN bus, records to SD card and forwards to a local server or the Leonics-MoC portal
• ✓The SCU serves as data logger, simple microgrid controller and protocol converter in one
• ✓The MBMS monitors and balances up to 39 lithium modules, balancing by state of charge or by battery voltage
• ✓Four RS-485 Modbus ports on both units · the SCU adds two frequency counter ports (four optional) and one input and one output signal port (seven of each optional)
• ✓32-bit microcontroller with 512 KB flash · firmware upgrades, commands and configuration over the air
• ✓Monitor, diagnose and configure through a web browser · FTP data transfer · high-rate sampling · low power draw
• ✓Ethernet as standard · wifi and a 4G LTE SIM router optional · optional 7-inch touchscreen · rack-mount enclosure

Projects using this

• Provincial Electricity Authority (PEA) — UPS across 870 branches
  Nationwide, Thailand · 2021 · UPS at 870 branches · centralized monitoring portal