7.4 Limon™ BMS Software Current Settings

Battery management system's most important part is the settings. User must set the correct parameters of the system to achieve no errors.

Danger

Always double check your values before saving all settings.

Fig.7.4.1: Current Settings Screen

T4S46S47S48S49S50S51S52S53S54S55S56S57S58S59S60S61S62S63S64M4

Table.7.4.1: Current Settings Screen Elements Descriptions

No.	Description	Setting Options
T4	Selection tab for Current settings.
M4	Selection tab for Settings.
S46 DCHG O.C. Warning · Current tabDischarge Over Current WarningTriggers a warning event before reaching discharge over current protection point.	Discharge Over Current Warning	Triggers a warning event before reaching discharge over current protection point. See Current Limits in the User Manual.
S47 DCHG O.C. Protection · Current tabDischarge Over Current Protection (1st)First limit for maximum allowed discharge current. This value may set to lower than 2nd point with higher delay time. Slow acting current limit.	Discharge Over Current Protection (1st)	First limit for maximum allowed discharge current. This value may set to lower than 2nd point with higher delay time. Slow acting current limit. See Current Limits in the User Manual.
S48 DCHG O.C.P Delay · Current tabDischarge Over Current Protection Delay (1st)Delay time before 1st discharge over current protection event.	Discharge Over Current Protection Delay (1st)	Delay time before 1st discharge over current protection event. See Current Limits in the User Manual.
S49 DCHG O.C. Protection (2) · Current tabDischarge Over Current Protection (2nd)Second limit for maximum allowed discharge current. This value may set to higher than 1st point with lower delay time. Fast acting current limit.	Discharge Over Current Protection (2nd)	Second limit for maximum allowed discharge current. This value may set to higher than 1st point with lower delay time. Fast acting current limit. See Current Limits in the User Manual.
S50 DCHG O.C. Delay (2) · Current tabDischarge Over Current Protection Delay (2nd)Delay time before 2nd discharge over current protection event.	Discharge Over Current Protection Delay (2nd)	Delay time before 2nd discharge over current protection event. See Current Limits in the User Manual.
S51 CHG O.C. Warning · Current tabCharge Over Current WarningTriggers a warning event before reaching charge over current protection point.	Charge Over Current Warning	Triggers a warning event before reaching charge over current protection point. See Current Limits in the User Manual.
S52 CHG O.C. Protection · Current tabCharge Over Current ProtectionMaximum allowed charge current.	Charge Over Current Protection	Maximum allowed charge current. See Current Limits in the User Manual.
S53 CHG O.C.P. Delay · Current tabCharge Over Current Protection DelayDelay time before charge over current protection event.	Charge Over Current Protection Delay	Delay time before charge over current protection event. See Current Limits in the User Manual.
S54 Max. Allowed Peak Current · Current tabMaximum Allowed Peak CurrentVery fast acting discharge current limit. Assume this value as the highest discharge current threshold without any delay time.	Maximum Allowed Peak Current	Very fast acting discharge current limit. Assume this value as the highest discharge current threshold without any delay time. See Current Limits in the User Manual.
S55 Current Sensor Ch#1 Coeff. · Current tabCurrent Sense Input Channel No 1 CoefficientVoltage to Current Coefficient for channel 1 input (sensor output)	Current Sense Input Channel No 1 Coefficient	Voltage to Current Coefficient for channel 1 input (sensor output) See Current Measurement in the User Manual.
S56 Current Sensor Ch#1 Offset · Current tabCurrent Sense Input Channel No 1 OffsetNegative or positive current offset can be set when needed.	Current Sense Input Channel No 1 Offset	Negative or positive current offset can be set when needed. See Current Measurement in the User Manual.
S57 Current Sensor Ch#2 Coeff. · Current tabCurrent Sense Input Channel No 2 CoefficientVoltage to Current Coefficient for channel 2 input (sensor output)	Current Sense Input Channel No 2 Coefficient	Voltage to Current Coefficient for channel 2 input (sensor output) See Current Measurement in the User Manual.
S58 Current Sensor Ch#2 Offset · Current tabCurrent Sense Input Channel No 2 OffsetNegative or positive current offset can be set when needed.	Current Sense Input Channel No 2 Offset	Negative or positive current offset can be set when needed. See Current Measurement in the User Manual.
S59 Ch#2 Low Current Limit · Current tabCurrent Sense Input Channel 2 Low current limitIf two channel current sensor type used in the system, low current channel current value can be set. Otherwise this value is not effective to current sensing.	Current Sense Input Channel 2 Low current limit	If two channel current sensor type used in the system, low current channel current value can be set. Otherwise this value is not effective to current sensing. See Current Measurement in the User Manual.
S60 Self Discharge Power · Current tabSelf Discharge PowerConstant consumption of the BMS and of every load that does not pass through the current sensor. The state of charge counts it, also at rest.	Self Discharge Power	Constant consumption of the BMS and of every load that does not pass through the current sensor. The state of charge counts it, also at rest. See Current Measurement in the User Manual.
S61 Current Sensor Ch# Pinout · Current tabCurrent sensor configuration and pinout settingYou can select various type of current sensor and channel configuration. For best measurement result select correct type. NO SENSOR INSTALLED: No sensor was installed to battery pack. Ch#1(H) or Ch#2(H): Default. Select when one channel sensor is used. Set one or two channel's coefficient. If any channel can't use, leave it floating, set coefficient to zero (0) and set only used channel's coefficient. Ch#1(H) and Ch#2(L): Select when two channel sensor is used. Set every channel's coefficient for both low and high current side. Measurement channel is switch internally according to settings. Ch#1(L) and Ch#2(H): Same as Ch#1(H) and Ch#2(L) with the channels swapped, so Ch#1 is the low current side and Ch#2 is the high current side. Select when the sensor is wired the other way round. Canbus Current Sensor: TBD.	Current sensor configuration and pinout setting	You can select various type of current sensor and channel configuration. For best measurement result select correct type. NO SENSOR INSTALLED: No sensor was installed to battery pack. Ch#1(H) or Ch#2(H): Default. Select when one channel sensor is used. Set one or two channel's coefficient. If any channel can't use, leave it floating, set coefficient to zero (0) and set only used channel's coefficient. Ch#1(H) and Ch#2(L): Select when two channel sensor is used. Set every channel's coefficient for both low and high current side. Measurement channel is switch internally according to settings. Ch#1(L) and Ch#2(H): Same as Ch#1(H) and Ch#2(L) with the channels swapped, so Ch#1 is the low current side and Ch#2 is the high current side. Select when the sensor is wired the other way round. Canbus Current Sensor: TBD. See Current Measurement in the User Manual. Options: NO SENSOR INSTALLED, Ch#1(H) or Ch#2(H), Ch#1(H) and Ch#2(L)*, Ch#1(L) and Ch#2(H)
S62 Pre-Charge Current Limit · Current tabPrecharge current limitThe precharge ends early as soon as the current falls below this value. If the current is still at or above it when the Pre-Charge Time runs out, the BMS sets Pre-Charge Fault.	Precharge current limit	The precharge ends early as soon as the current falls below this value. If the current is still at or above it when the Pre-Charge Time runs out, the BMS sets Pre-Charge Fault. See Precharge in the User Manual.
S63 Pre-Charge Time · Current tabPrecharge timePrecharge time before discharge power path is switching to ON.	Precharge time	Precharge time before discharge power path is switching to ON. See Precharge in the User Manual.
S64 Pre-Charge Strategy · Current tabPrecharge StrategyYou can enable precharge process and precharge conditions. PCHG Function Disabled: No precharge event. System will switch ON the DCHG path without precharge ptogress. PCHG Time Only: System will apply precharge current along PCHG time before DCHG path is switching ON. PCHG Time and Current Limit: System will apply precharge current along PCHG time and checks PCHG path current before DCHG path is switching ON.	Precharge Strategy	You can enable precharge process and precharge conditions. PCHG Function Disabled: No precharge event. System will switch ON the DCHG path without precharge ptogress. PCHG Time Only: System will apply precharge current along PCHG time before DCHG path is switching ON. PCHG Time and Current Limit: System will apply precharge current along PCHG time and checks PCHG path current before DCHG path is switching ON. See Precharge in the User Manual. Options: PCHG Function Disabled, PCHG Time Only, PCHG Time and Current Limit

Settings buttons

The buttons at the bottom of this screen are explained in 7.8 Settings Buttons.