Strings controllers: signals, states and errors

Version 35.1 by Admin on 2025/02/04 12:35

Signals, states and errors

Input signals

Below is the list of input signals that can be assigned to discrete inputs of the battery strings controller.

Name	Description	Compability		BMS DIsplay		CANopen SDO	Modbus
Name	Description	Main X	Main 3X	Short name	Abbr.	CANopen SDO	Modbus
Battery cover	Signal from the battery cover	Yes	Yes	Battery cover	CVR		0x103A-0x103B, bit 0. Off = 0, On = 1.
CH contactor feedback	Signal from the charging contactor feedback loop	Yes	Yes	CH cont. feed.	CCF		0x103A-0x103B, bit 4. Off = 0, On = 1.
CH/DCH contactor feedback	Signal from the charging/discharging contactor feedback loop	Yes	Yes	C/D cont. feed.	CDF		0x103A-0x103B, bit 6. Off = 0, On = 1.
Charge request	Request to close the charging contactor	Yes	Yes	Charge request	CRE		0x103A-0x103B, bit 1. Off = 0, On = 1.
DCH contactor feedback	Signal from the discharging contactor feedback loop	Yes	Yes	DCH cont. feed.	DCF		0x103A-0x103B, bit 5. Off = 0, On = 1.
Discharge request	Request to close the discharging contactor	Yes	Yes	Discharge req.	DRE		0x103A-0x103B, bit 3. Off = 0, On = 1.
Insulation status	Signal from an insulation monitoring device	Yes	Yes	Insul. status	INS		0x103A-0x103B, bit 7. Off = 0, On = 1.
Interlock	Signal from the interlock loop		Yes	Interlock	INT		0x103A-0x103B, bit 12. Off = 0, On = 1.
Join to charge	Request to join the battery modules for charging	Yes	Yes	Join to charge	JTC		0x103A-0x103B, bit 8. Off = 0, On = 1.
Join to discharge	Request to join the battery modules for discharging	Yes	Yes	Join to dischar.	JTD		0x103A-0x103B, bit 9. Off = 0, On = 1.
Main contactor feedback	Signal from the main contactor feedback loop	Yes	Yes	Main cont. feed.	MCF		0x103A-0x103B, bit 11. Off = 0, On = 1.
PCH contactor feedback	Signal from the precharging contactor feedback loop	Yes	Yes	PCH cont. feed.	PCF		0x103A-0x103B, bit 10. Off = 0, On = 1.
Power down request	Request to power down the device		Yes	Power down req.	PDN		0x103A-0x103B, bit 13. Off = 0, On = 1.
Precharge request	Request to close the precharging contactor	Yes	Yes	Precharge req.	PRE		0x103A-0x103B, bit 2. Off = 0, On = 1.

Internal signals

Below is the list of internal BMS signals. Most signals can be assigned to discrete outputs and relays.

Name	Description	Compability		BMS Display		CANopen SDO	Modbus
Name	Description	Main X	Main 3X	Short name	Abbr.	CANopen SDO	Modbus
Charging current present	Signal showing the presence of the charging current	Yes*	Yes*	CH curr. present	CCP		0x1020-0x1021, bit 3. Off = 0, On = 1.
Charging	Command to control the charging contactor	Yes	Yes	Charging	CH		0x1020-0x1021, bit 1. Open = 0, Closed = 1.
Charging/Discharging	Command to control the charging/discharging contactor	Yes	Yes	Charg./Discharg.	C/D		0x1020-0x1021, bit 5. Open = 0, Closed = 1.
Coolant pump	Command to control the coolant pump	Yes	Yes	Coolant pump	CP		0x1020-0x1021, bit 15. Off = 0, On = 1.
Cooler	Command to control the cooler	Yes	Yes	Cooler	COO		0x1020-0x1021, bit 12. Off = 0, On = 1.
Discharging current present	Signal showing the presence of the discharging current	Yes*	Yes*	DCH cur. present	DCP		0x1020-0x1021, bit 4. Off = 0, On = 1.
Discharging	Command to control the discharging contactor	Yes	Yes	Discharging	DCH		0x1020-0x1021, bit 2. Open = 0, Closed = 1.
Fuse 1 (modules)	ORed internal signals "Fuse 1" from all battery modules	Yes*	Yes*	Fuse 1 (mod.)	F1M		0x1020-0x1021, bit 8. Off = 0, On = 1.
Fuse 2 (modules)	ORed internal signals "Fuse 2" from all battery modules	Yes*	Yes*	Fuse 2 (mod.)	F2M		0x1020-0x1021, bit 9. Off = 0, On = 1.
Fuse 3 (modules)	ORed internal signals "Fuse 3" from all battery modules	Yes*	Yes*	Fuse 3 (mod.)	F3M		0x1020-0x1021, bit 10. Off = 0, On = 1.
General error (modules)	ORed internal signals "General error" from all battery modules	Yes	Yes	Gen.error (mod.)	GEM		0x1020-0x1021, bit 16. Off = 0, On = 1.
Heater	Command to control the heater	Yes	Yes	Heater	HEA		0x1020-0x1021, bit 11. Off = 0, On = 1.
Init	Signal showing that the device is in the initialization phase	Yes*	Yes*	Init	INI		0x1020-0x1021, bit 0. Off = 0, On = 1.
Interlock (modules)	ORed internal signals "Interlock" from all battery modules	Yes*	Yes*	Interlock (mod.)	INM		0x1020-0x1021, bit 7. Off = 0, On = 1.
Main contactor	Command to control the main contactor	Yes	Yes	Main contactor	MCO		0x1020-0x1021, bit 13. Open = 0, Closed = 1.
Precharging	Command to control the precharging contactor	Yes	Yes	Precharging	PCH		0x1020-0x1021, bit 6. Open = 0, Closed = 1.
Service reset	Command to restart the device	Yes*	Yes*	Service reset	SR		0x1020-0x1021, bit 14. Off = 0, On = 1.

* Cannot be assigned to discrete outputs and relays.

Errors

Name	Description	Is a critical error?	Main X	Main 3X	Short name	Abbr.	CANopen SDO	Modbus
Name	Description	Is a critical error?	Compability		BMS Display		CANopen SDO	Modbus
ADC error	Error of the ADC that measures the battery current	Yes		Yes	ADC error	ADC		0x1022-0x1023, bit 23. Off = 0, On = 1.
Battery cover error	Battery cover is open	Yes	Yes	Yes	Battery cover	BCE		0x1022-0x1023, bit 0. Off = 0, On = 1.
CH contactor feedback error	The control signal for the charging contactor and the contactor feedback differ	Yes	Yes	Yes	CH cont. feed.	CCF		0x1022-0x1023, bit 10. Off = 0, On = 1.
CH/DCH contactor feedback error	The control signal for the charging/discharging contactor and the contactor feedback differ	Yes	Yes	Yes	C/D cont. feed.	CDF		0x1022-0x1023, bit 12. Off = 0, On = 1.
Charging current unbalance	Charging currents of battery modules differ too much		Yes	Yes	CH current unb.	CCU		0x1022-0x1023, bit 7. Off = 0, On = 1.
Critical error	Critical system error, the BMS is damaged		Yes	Yes	Critical error	CER		0x1022-0x1023, bit 2. Off = 0, On = 1.
Current limit error	Charging or discharging current is more than the limit calculated by Charge map or Discharge map		Yes	Yes	Cur. limit error	CLE		0x1022-0x1023, bit 31. Off = 0, On = 1.
Current sensor error	Error in the current sensor circuit	Yes		Yes	Current sensor	CSE		0x1022-0x1023, bit 24. Off = 0, On = 1.
Current unbalance (CH)	Some of battery modules are unbalanced in current (for charging)		Yes	Yes	Current unb. CH	CUC		0x1022-0x1023, bit 5. Off = 0, On = 1.
Current unbalance (DCH)	Some of battery modules are unbalanced in current (for discharging)		Yes	Yes	Current unb. DCH	CUD		0x1022-0x1023, bit 6. Off = 0, On = 1.
DCH contactor feedback error	The control signal for the discharging contactor and the contactor feedback differ	Yes		Yes	DCH cont. feed.	DCF		0x1022-0x1023, bit 11. Off = 0, On = 1.
Discharging current unbalance	Discharging currents of battery modules differ too much		Yes	Yes	DCH current unb.	DCU		0x1022-0x1023, bit 8. Off = 0, On = 1.
FS error	SD card read/write error		Yes	Yes	FS error	FSE		0x1022-0x1023, bit 26. Off = 0, On = 1.
High contactor temperature	Temperature of a contactor is too high		Yes	Yes	Hi. cont. temp.	HCT		0x1022-0x1023, bit 20. Off = 0, On = 1.
High humidity	Increased humidity inside the battery			Yes	High humidity	HHU		0x1022-0x1023, bit 17. Off = 0, On = 1.
High voltage fault	Failure of high voltage measuring circuits	Yes		Yes	HV fault	HVF		0x1022-0x1023, bit 27. Off = 0, On = 1.
HVIL error	Breakage of high-voltage interlock current loop	Yes		Yes	HVIL error	HE		0x1022-0x1023, bit 22. Off = 0, On = 1.
Insulation fault	Insulation resistance is too low	Yes	Yes	Yes	Insulation fault	INF		0x1022-0x1023, bit 13. Off = 0, On = 1.
Module offline	Some of battery modules is offline	Yes	Yes	Yes	Module offline	MOF		0x1022-0x1023, bit 1. Off = 0, On = 1.
Main contactor feedback error	The control signal for the main contactor and the contactor feedback differ	Yes	Yes	Yes	Main cont. feed.	MCF		0x1022-0x1023, bit 29. Off = 0, On = 1.
Mount error	SD card cannot be mounted		Yes	Yes	Mount error	MNT		0x1022-0x1023, bit 25. Off = 0, On = 1.
Need acknowledge	There is an unacknowledged error in error journal		Yes	Yes	Need ACK	ACK		0x1022-0x1023, bit 9. Off = 0, On = 1.
Overcurrent	The battery current is too high		Yes	Yes	Overcurrent	OC		0x1022-0x1023, bit 15. Off = 0, On = 1.
PCH contactor feedback error	The control signal for the precharging contactor and the contactor feedback differ	Yes	Yes	Yes	PCH cont. feed.	PCF		0x1022-0x1023, bit 28. Off = 0, On = 1.
Power fault	External devices power supply error: current sensors, HVIL, BMS Logic or CAN2 (int) bus powered devices	Yes		Yes	Power fault	PF		0x1038-0x1039, bit 0. Off = 0, On = 1.
Power switch error	Short circuit in contactor coil control circuit or power switch overheating	Yes		Yes	PSW error	PSE		0x1022-0x1023, bit 16. Off = 0, On = 1.
Precharge error	Capacitive load pre-charge process did not end during the estimated time		Yes	Yes	Precharge error	PE		0x1022-0x1023, bit 30. Off = 0, On = 1.
Short circuit	Flowing high battery currents during a long time		Yes	Yes	Short circuit	SHC		0x1022-0x1023, bit 19. Off = 0, On = 1.
Stuck contactor	Some contactor got stuck	Yes	Yes	Yes	Stuck contactor	STC		0x1022-0x1023, bit 21. Off = 0, On = 1.
Voltage unbalance (CH)	Some of battery modules are unbalanced in voltage (for charging)		Yes	Yes	Voltage unb. CH	VUC		0x1022-0x1023, bit 3. Off = 0, On = 1.
Voltage unbalance (DCH)	Some of battery modules are unbalanced in voltage (for discharging)		Yes	Yes	Voltage unb. DCH	VUD		0x1022-0x1023, bit 4. Off = 0, On = 1.
Water	There is water in the battery enclosure	Yes		Yes	Water	WHU		0x1022-0x1023, bit 18. Off = 0, On = 1.
WDT reset	Watchdog timer reset the device	Yes	Yes	Yes	WDT reset	WDT		0x1022-0x1023, bit 14. Off = 0, On = 1.