Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 247)

TROUBLESHOOTING 10-5
1557-UM050F-EN-P – June 2013
BULLETIN 1557 LINE SIDE (DCB2) and MACHINE SIDE (DCB1) CONTROL BOARD
OSCILLOSCOPE MONITORING TEST POINTS
CONNECTION LINE SIDE CONTROL BOARD MACHINE SIDE CONTROL BOARD
V12 / TP1 LINE VOLTAGE, VAB MOTOR VOLTAGE, VAB
V23 / TP2 LINE VOLTAGE,VBC MOTOR VOLTAGE, VBC
V31 / TP3 LINE VOLTAGE, VCA MOTOR VOLTAGE, VCA
VDC / TP4 DC LINK VOLTAGE DC LINK VOLTAGE
F12 / TP5 RECONSTRUCTED LINE VOLTAGE MOTOR FLUX
F23 / TP6 RECONSTRUCTED LINE VOLTAGE MOTOR FLUX
F31 / TP7 RECONSTRUCTED LINE VOLTAGE MOTOR FLUX
FLX / TP8 RECTIFIED LINE VOLTAGE RECTIFIED MOTOR FLUX
I1 / TP9 LINE CURRENT, Phase A MOTOR CURRENT, Phase A
I2 / TP10 LINE CURRENT, Phase B MOTOR CURRENT, Phase B
I3 / TP11 LINE CURRENT, Phase C MOTOR CURRENT, Phase C
IDC / TP12 DC LINK CURRENT RECTIFIED MOTOR CURRENT
VNG / TP13 LINE NEUTRAL TO GRD VOLTAGE MOTOR NEUTRAL TO GRD VOLTAGE
AO1 / TP14 ASSIGNABLE ANALOG OUTPUT ASSIGNABLE ANALOG OUTPUT
AO2 / TP15 ASSIGNABLE ANALOG OUTPUT ASSIGNABLE ANALOG OUTPUT
AO3 / TP16 ASSIGNABLE ANALOG OUTPUT ASSIGNABLE ANALOG OUTPUT
AO4 / TP17 ASSIGNABLE ANALOG OUTPUT ASSIGNABLE ANALOG OUTPUT
COM / TP18 ANALOG COMMON ANALOG COMMON
NOTE: All test points are referenced to ground, the scope common must be connected to cabinet ground.
V12 / TP1, V23 / TP2, V31 / TP3, VNG / TP13
Approximately 5 volts RMS nominal
VDC / TP4
Approximately 6.75 volts nominal
F12 / TP5, F23 / TP6, F31 / TP7
Approximately 5.32 volts RMS nominal
FLX / TP8
Approximately 7.53 volts peak nominal
I1 / TP9, I2 / TP10, I3 / TP11, IDC / TP12
Approximately 5 volts peak nominal