This fault needs to be disabled if a pack needs to tolerate stacks that can experience
communication faults. Even when this fault is disabled, a COM status for a stack will
be reported on the Stack Status page as described in the Operator Interface Manual:
Multi-Stack. A stack that does not communicate with a Battery Control Panel is not
considered a ready stack (as per the definition of
).
8.6.4. Stack Watchdog
Nuvation Energy Battery Control Panel will periodically update the watchdogs timers
(
sc_controller_wdt
) of all stacks that are connected to the Battery Control Panel. If an Stack Controller
becomes disconnected from the Battery Control Panel, this local Stack Controller watchdog can be
configured to trip a fault at the stack level.
gbc_sc_wdt_reset.period
▪
The period at which all connected Stack Controller watchdogs will be reset.
gbc_sc_wdt_reset.enable
▪
Set this to 1 to enable the update of stack watchdogs by the Battery Control Panel.
If this feature is enabled, then it assumes that the
is not in use and its
fault should be disabled.
8.6.5. External Controller Heartbeat
Nuvation Energy Battery Control Panel can be configured to require a heartbeat signal from an
external controller in order to keep all stacks online and out of fault state. A write to the MESA
controller heartbeat register is expected at least once during the watchdog period. The Battery
Control Panel will write to all enabled stacks watchdog registers (sc_controller_wdt) to keep them
stack out of fault state.
gbc_controller_wdt.period
▪
Trip time for watchdog if heartbeat disappears
▪
Set to 5 seconds or as per application requirements
gbc_fault_controller_wdt.disabled
▪
Set to 0 to enable controller watchdog
▪
Set to 1 to disable controller watchdog
If this feature is not used, the watchdog fault should be disabled and the
enabled.
Nuvation Energy Battery Control Panel - Product Manual
Document ID: NE-PM-005
73
Rev 1.1, 2020-10-14
Curie Update 2
