SOP ags used in Precharge:
• DriveReadyToPrecharge
• DriveReadyToPrecharge_I – ag that indicates all conditions are met for precharge to
commence
• PrechargeM1CloseAck_I – ag to indicate M1 status (true is closed)
• PrechargeM2CloseAck_I – ag to indicate M2 status (true is closed) CB2Status_O – ag to
indicate CB2 status (true is CB2 closed)
• CB2Status_O - ag to indicate CB2 status (true is CB2 closed)
• PCVMRStatus_O – ag to indicate CB2 voltage status (true is CB closed – no UV condition)
• TripPrechargeCB2_O – Command precharge CB2 to trip (set in SOP) – causes precharge fault
• MainInputVoltageDisable_O – ag to disable the M1 contactor (true is command to open)
• ClosedPrechargeCB_I – ag to trip the breaker (true is trip) – must connect to output
hardware
• StartCellPrecharge_O – ag set to initiate precharge – remove after complete
• PrechargeLimitationEnable_O – ag set to enable the precharge limiting algorithm
• PrechargeComplete_I – Indicates that precharge is completed (M1 closed and MV above 80%)
• CimvPulsedOutputEnable_O – Set this true if CIMV requires a pulsed output
Dedicated I/O used in Precharge:
• Output to M1 Permissive – SIB 51, 53, 55 (TIMV)
• Output to close M1 – DO-14 – J4-7, 8, 9 (CIMV) – Pulsed or maintained – SOP selection (for
pulsed)
• Output to trip LFR – DO-15 – J4-10, 11, 12 (LFRInputProtect)
• LFR status – DI-3E – J9-4
See also
Type 5 (Open) Pre-charge (Page 276)
Preconditions for Pre-charge Types 5 and 6 (Page 273)
8.17.15.5 Preconditions for Pre-charge Types 5 and 6
Aside from safety concerns, and assuming that input power is available, the following conditions
need to be met to initiate pre-charge types 5 and 6. Monitor the entire pre-charge sequence
through an externally connected monitor or through the Debug Tool set to the "Drive Misc Status
Flags 2" using Ctrl-Y on the keyboard or menu selection in the tool.
Advanced Operating Functions
8.17 Synchronous Transfer
NXGPro+ Control Manual
Operating Manual, A5E50491925A 273
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