Manual

2-16 PMI Regulator
2.2.3.9 DC Bus Pre-Charge
The DC bus pre-charge enable signal is used to control the phase advance SCRs in
large AC input units to limit the rate of charge on the bus capacitors. This signal is
also used to close the pre-charge contactor (SCR) when the bus voltage is greater
than the undervoltage threshold level and has reached a steady state.
0V commands the pre-charge to close. +5V commands the pre-charge to open.
2.2.3.10 EE ROM Signals
These signals are used for Power Module parameter storing EE ROM.
2.2.3.11 N-Contactor
PILOT is driven high to pick up an external N-contactor.
2.2.3.12 Power Supply
These voltages are supplied to the PMI Regulator by the gate driver/power supply
board.
Pin 31: /CHARGE Pre-charge Enable
Pin 32: EE_IO Not Applicable
Pin 33: EE_SK Not Applicable
Pin 34: EE_CS Not Applicable
Pin 35: PILOT Not Applicable
Pin 36: CVERIFY Not Applicable
Pin 37: +5V
Pin 38: +5V
Pin 39: +5V
Pin 40: +15V
Pin 41: +15V
Pin 42: -15V
Pin 43: -15V
Pin 44: +24V
Pin 45: ISO_12V Isolated 12V power supply
Pin 46 I12V_RTN Isolated 12V power supply return
Pin 49: +5V
Pin 50: +5V