¶ WatchMonCORE
Introducing the next generation of WatchMon supervisors — the WatchMonCORE.
WatchMonCORE is now the core building block. Additional components will link to this supervisor in the future.
¶ Overview
BMS central processor that watches the individual CMU (cell monitoring units) and provides supervision functions.
The supervisor is able to notify a remote system(s) of the battery state and when required, trigger evasive action to prevent damage to the battery pack.
- BMS to suit LiFePO4, Lithium-Ion, or custom chemistry
- User-configurable parameters and control logic
- Configurable 30vdc 5A relay (i.e. remote circuit breaker trip, contactor or fan)
- Additional inputs/outputs via Expansion Board *purchased separately
- Compatible with all Expansion Board (Series 1, 2, or 3)
- Clock with backup battery data logging of key metrics for 10 years
- Firmware upgrades via USB
- 4-Stage Display of State of Charge (SoC%)
- External ambient temperature sensor
- Easy to use pluggable screw-terminal connectors
- With distributed cell monitors capable of 28 Ah/day balancing adjustment for each cell
- Link to ShuntMon with 500A or 1000A power rating
- Compatible with Multimon MM8
¶ Remote Communication
- WiFi connectivity (normal, disabled, or read-only)
- CANbus Opto-Insulated to remote Charger / Inverter equipment
- Future feature to connecting to Cloud Portal via MQTT (secure link)
¶ Improvements
- Easier-to-use layout than previous models
- Built-in 8v to 30v DC-DC supply
When powering the WatchMonCORE (version 4.5) with a supply above 30Vdc (i.e. 48V battery pack voltage), always connect to an isolated DC-DC (ideally 24Vdc) to ensure a robust, long-term, and reliable product.
Please refer to the suggested information or equivalent:
MEAN WELL DDR-15L-24
- Isolated DIN Rail Mount DC/DC Converter, Railway, 4:1, 15 W, 1 Output, 24 V, 0.6 A
- Input Voltage DC Min 18V Input Voltage DC Max 75V
*This should be enough as the WatchMon only needs 2W.
- Cell Monitor port (aka CMU) now with its own external fully isolated communication module named "IsoMon3" that can link to LongMon, BlockMon and LeafMon
- CMU and Shunt serial ports have different sets of pins to avoid confusion
- New onboard Relay (30vdc 5a relay) making it easier for DIY wiring
- CANbus
- The communication bus is now fully isolated to prevent issues when connected to some equipment that is not properly grounded. The Isolation requirement is now stipulated by some inverters available in the market. The 120ohm terminating resistor is now mounted to the circuit board and can be removed if required (via cutting the resistor leg). This eliminates the need to combine the resistor with the cabling on the plug. More of the new features of the WatchMonCORE are in this article: WatchMonCORE - What is different?
You should also NOT add an extra 120ohm resistor as this is already built into the WatchMon, doing so will prevent the CANbus from working.
¶ Optional Expansion Board (Series 3) Details
- 3 x Mechanical 30Vdc 5A relay outputs
- 3 x Solid state relay SSR 65vdc 5Amax isolated modules outputs (1A cont.)
- 2 x Isolated inputs 5-65vdc sensor channel
- 2 x ADC 0-5vdc (future development option)
- 1 x RS485 Serial port (future development option)
- 1 x External Addressable LED (future development option)
- Compatible with all supervisors
¶ Dimensions
- WatchMonCORE - Length 107 mm x Width 55 mm
- Expansion Board-E3 - Length 107 mm x Width 55 mm
¶ Software
WatchMonCORE requires the latest stable release of the WatchMon Toolkit.