Strings controllers: signals, states and errors

Version 35.19 by Admin on 2025/02/06 19:12

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.

Remote control values: Off = 0, On = 1, Use physical input = 2-65535.
Status values: Off = 0, On = 1.

Name	Description	Compability		BMS DIsplay		Remote control		Status
Name	Description	Main X	Main 3X	Short name	Abbr.	CANopen SDO	Modbus, holding regs	CANopen SDO	Modbus, input regs
Battery cover	Signal from the battery cover	Yes	Yes	Battery cover	CVR	0x5100 sub 0x01	0x5000	0x4200 sub 0x01, bit 0	0x103A-0x103B, bit 0
CH contactor feedback	Signal from the charging contactor feedback loop	Yes	Yes	CH cont. feed.	CCF	0x5100 sub 0x05	0x5004	0x4200 sub 0x01, bit 4	0x103A-0x103B, bit 4
CH/DCH contactor feedback	Signal from the charging/discharging contactor feedback loop	Yes	Yes	C/D cont. feed.	CDF	0x5100 sub 0x07	0x5006	0x4200 sub 0x01, bit 6	0x103A-0x103B, bit 6
Charge request	Request to close the charging contactor	Yes	Yes	Charge request	CRE	0x5100 sub 0x02	0x5001	0x4200 sub 0x01, bit 1	0x103A-0x103B, bit 1
DCH contactor feedback	Signal from the discharging contactor feedback loop	Yes	Yes	DCH cont. feed.	DCF	0x5100 sub 0x06	0x5005	0x4200 sub 0x01, bit 5	0x103A-0x103B, bit 5
Discharge request	Request to close the discharging contactor	Yes	Yes	Discharge req.	DRE	0x5100 sub 0x04	0x5003	0x4200 sub 0x01, bit 3	0x103A-0x103B, bit 3
Insulation status	Signal from an insulation monitoring device	Yes	Yes	Insul. status	INS	0x5100 sub 0x08	0x5007	0x4200 sub 0x01, bit 7	0x103A-0x103B, bit 7
Interlock	Signal from the interlock loop		Yes	Interlock	INT	0x5100 sub 0x0D	0x500C	0x4200 sub 0x01, bit 12	0x103A-0x103B, bit 12
Join to charge	Request to join the battery modules for charging	Yes	Yes	Join to charge	JTC	0x5100 sub 0x09	0x5008	0x4200 sub 0x01, bit 8	0x103A-0x103B, bit 8
Join to discharge	Request to join the battery modules for discharging	Yes	Yes	Join to dischar.	JTD	0x5100 sub 0x0A	0x5009	0x4200 sub 0x01, bit 9	0x103A-0x103B, bit 9
Main contactor feedback	Signal from the main contactor feedback loop	Yes	Yes	Main cont. feed.	MCF	0x5100 sub 0x0C	0x500B	0x4200 sub 0x01, bit 11	0x103A-0x103B, bit 11
PCH contactor feedback	Signal from the precharging contactor feedback loop	Yes	Yes	PCH cont. feed.	PCF	0x5100 sub 0x0B	0x500A	0x4200 sub 0x01, bit 10	0x103A-0x103B, bit 10
Power down request	Request to power down the device		Yes	Power down req.	PDN	0x5100 sub 0x0E	-	0x4200 sub 0x01, bit 13	0x103A-0x103B, bit 13
Precharge request	Request to close the precharging contactor	Yes	Yes	Precharge req.	PRE	0x5100 sub 0x03	0x5002	0x4200 sub 0x01, bit 2	0x103A-0x103B, bit 2

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		Status
Name	Description	Main X	Main 3X	Short name	Abbr.	CANopen SDO	Modbus, input regs
Charging current present	Signal showing the presence of the charging current	Yes*	Yes*	CH curr. present	CCP	0x4200 sub 0x03, bit 3	0x1020-0x1021, bit 3
Charging	Command to control the charging contactor	Yes	Yes	Charging	CH	0x4200 sub 0x03, bit 1	0x1020-0x1021, bit 1
Charging/Discharging	Command to control the charging/discharging contactor	Yes	Yes	Charg./Discharg.	C/D	0x4200 sub 0x03, bit 5	0x1020-0x1021, bit 5
Coolant pump	Command to control the coolant pump	Yes	Yes	Coolant pump	CP	0x4200 sub 0x03, bit 15	0x1020-0x1021, bit 15
Cooler	Command to control the cooler	Yes	Yes	Cooler	COO	0x4200 sub 0x03, bit 12	0x1020-0x1021, bit 12
Discharging current present	Signal showing the presence of the discharging current	Yes*	Yes*	DCH cur. present	DCP	0x4200 sub 0x03, bit 4	0x1020-0x1021, bit 4
Discharging	Command to control the discharging contactor	Yes	Yes	Discharging	DCH	0x4200 sub 0x03, bit 2	0x1020-0x1021, bit 2
Fuse 1 (modules)	ORed internal signals "Fuse 1" from all battery modules	Yes*	Yes*	Fuse 1 (mod.)	F1M	0x4200 sub 0x03, bit 8	0x1020-0x1021, bit 8
Fuse 2 (modules)	ORed internal signals "Fuse 2" from all battery modules	Yes*	Yes*	Fuse 2 (mod.)	F2M	0x4200 sub 0x03, bit 9	0x1020-0x1021, bit 9
Fuse 3 (modules)	ORed internal signals "Fuse 3" from all battery modules	Yes*	Yes*	Fuse 3 (mod.)	F3M	0x4200 sub 0x03,bit 10	0x1020-0x1021, bit 10
General error (modules)	ORed internal signals "General error" from all battery modules	Yes	Yes	Gen.error (mod.)	GEM	0x4200 sub 0x03, bit 16	0x1020-0x1021, bit 16
Heater	Command to control the heater	Yes	Yes	Heater	HEA	0x4200 sub 0x03, bit 11	0x1020-0x1021, bit 11
Init	Signal showing that the device is in the initialization phase	Yes*	Yes*	Init	INI	0x4200 sub 0x03, bit 0	0x1020-0x1021, bit 0
Interlock (modules)	ORed internal signals "Interlock" from all battery modules	Yes*	Yes*	Interlock (mod.)	INM	0x4200 sub 0x03, bit 7	0x1020-0x1021, bit 7
Main contactor	Command to control the main contactor	Yes	Yes	Main contactor	MCO	0x4200 sub 0x03, bit 13	0x1020-0x1021, bit 13
Precharging	Command to control the precharging contactor	Yes	Yes	Precharging	PCH	0x4200 sub 0x03, bit 6	0x1020-0x1021, bit 6
Service reset	Command to restart the device	Yes*	Yes*	Service reset	SR	0x4200 sub 0x03, bit 14	0x1020-0x1021, bit 14

* 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
Battery cover error	Battery cover is open	Yes	Yes	Yes	Battery cover	BCE		0x1022-0x1023, bit 0
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
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
Charging current unbalance	Charging currents of battery modules differ too much		Yes	Yes	CH current unb.	CCU		0x1022-0x1023, bit 7
Critical error	Critical system error, the BMS is damaged		Yes	Yes	Critical error	CER		0x1022-0x1023, bit 2
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
Current sensor error	Error in the current sensor circuit	Yes		Yes	Current sensor	CSE		0x1022-0x1023, bit 24
Current unbalance (CH)	Some of battery modules are unbalanced in current (for charging)		Yes	Yes	Current unb. CH	CUC		0x1022-0x1023, bit 5
Current unbalance (DCH)	Some of battery modules are unbalanced in current (for discharging)		Yes	Yes	Current unb. DCH	CUD		0x1022-0x1023, bit 6
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
Discharging current unbalance	Discharging currents of battery modules differ too much		Yes	Yes	DCH current unb.	DCU		0x1022-0x1023, bit 8
FS error	SD card read/write error		Yes	Yes	FS error	FSE		0x1022-0x1023, bit 26
High contactor temperature	Temperature of a contactor is too high		Yes	Yes	Hi. cont. temp.	HCT		0x1022-0x1023, bit 20
High humidity	Increased humidity inside the battery			Yes	High humidity	HHU		0x1022-0x1023, bit 17
High voltage fault	Failure of high voltage measuring circuits	Yes		Yes	HV fault	HVF		0x1022-0x1023, bit 27
HVIL error	Breakage of high-voltage interlock current loop	Yes		Yes	HVIL error	HE		0x1022-0x1023, bit 22
Insulation fault	Insulation resistance is too low	Yes	Yes	Yes	Insulation fault	INF		0x1022-0x1023, bit 13
Module offline	Some of battery modules is offline	Yes	Yes	Yes	Module offline	MOF		0x1022-0x1023, bit 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
Mount error	SD card cannot be mounted		Yes	Yes	Mount error	MNT		0x1022-0x1023, bit 25
Need acknowledge	There is an unacknowledged error in error journal		Yes	Yes	Need ACK	ACK		0x1022-0x1023, bit 9
Overcurrent	The battery current is too high		Yes	Yes	Overcurrent	OC		0x1022-0x1023, bit 15
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
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.