Hardware Settings - Nuvation Energy NUV300-BC-12 Product Manual

7.9.3.1. Stack Voltage Factory Calibration
Factory calibration operates according to the following formula that converts an ADC reading to a
voltage:
pi_afe_vadc.multiplier (Factory)
▪
Default calibration: set to -1
pi_afe_vadc.divider (Factory)
▪
Default calibration: set to 28436
While these defaults are likely acceptable for most applications, the calibration can be fine-tuned as
needed for particular situations.
7.9.3.2. Stack Voltage Field Calibration
Units that have been factory locked may still require tuning for variability on a per-unit basis. The
equation for Stack Voltage Field Calibration adjustment is:
The gain is set in the configuration as follows.
stack_power.voltage_gain (Configuration)
▪
Fine tuning gain for raw voltage values. A value of 1000 = +1% adjustment (rawvoltage *
1.01). A value of -1000 = -1% adjustment (rawvoltage * 0.99).
At the factory, appropriate limits for the gain are defined to ensure a user does not misconfigure the
system. The gain limit is set in the configuration as follows:
stack_power.voltage_gain_limit (Factory)
▪
Absolute value of the limit for gains on raw voltage values.
▪
If the stack_power.voltage_gain register is set to outside of this limit, the gain applied will be
limited to this value.

7.10. Hardware Settings

For Low-Voltage BMS systems, the following configuration registers must be set as per the Low-
Voltage BMS variant in use for your application.
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
127 Rev 1.2, 2021-03-03
Curie Update 1