CAUTION: Example shown is for a demo LiFePO 4 cell pack, 16S1P. Please ensure that you adopt values suitable to your application and comply with the battery suppliers recommendation.
¶ Install communication cable to Charger via CAN port on WatchMon.
¶ For newer WatchMon:
Note: 120 Ohm resistor shares CANbus High and CANbus Low
¶ For older WatchMon with 4 Pin CAN:
¶ Install communication cable to SMA Inverter wiring socket.
Sunny Island RJ45 pin 4 connects to Can-H WatchMon
Sunny Island RJ45 pin 5 connects to Can-L WatchMon
Only the Sunny Island CAN communication interface is connected to the BMS, the second communication line – SYNC Bus is not connected to the BMS.
Extract from Sunny Island configuration of RJ-45 plug "ComSyncIn" of:
- Pin Signal
- 1 Sync1 – reserved
- 2 CAN_GND
- 3 SYNC_H
- 4 CAN_H
- 5 CAN_L
- 6 SYNC_L
- 7 Sync7 – reserved
- 8 Sync8 – reserved
NB: Using a CAT5 Ethernet Cable strip back the cable and connect to pins identified above.
¶ Configure Watchmon Toolkit Software
¶ 1. Integration Settings
Open the WatchMon Toolkit and navigate to the Integration Settings by clicking the Menu then Hardware and select Integration Tab.
Select CANbus protocol to "SmaSunnyIslandV31" and Save.
¶ 2. Charging Settings
On WatchMon Toolkit, navigate to Control Logic menu, then Charging tab.
Adjust the Charging Control Logic to suit the application.
Notes:
- Limited power must be enabled.
- Cell Hi Cutout should be above the CellMon bypass voltage threshold as a safe guard target.
- Low power current should suit the bypass capability of CellMon.
- When the bypass current is above Initial, it will trigger the system to low power.
- When the bypass current for all cellmons is above Final, the system will complete charging cycle.
¶ 3. CellMon Settings
Navigate to Hardware, then CellMon tab.
Adjust the CellMon Bypass Voltage to suit the application.
Note: Make sure to "Device Sync" the changes to the CellMons.
¶ 4. Remote Settings
Navigate to the Remote tab on the Control Logic screen.
¶ Adjust the remote charging target to suit the application.
Notes:
- Scaling must be 10, for both voltage and current.
- Low power must be enabled on charging tab.
- Low power current should suit the bypass capability of CellMon.
- Charger voltage target needs to be sufficient for all cells to reach bypass threshold.
¶ Adjust the remote discharging targets to suit the application.
Notes:
- Scaling must be 10, for both voltage and current.
- Do not run low power mode on discharging tab.
- Control logic discharge voltage cutout should match the remote target.
¶ 5. Live Stats
Navigate to Telemetry, then Live Stats to observe system operation.
