Ishikawa Diagram #7: Rail Undervoltage Fault; Ishikawa Diagram #8: Hv Overcurrent Fault - ferrotec Temescal CV-6SLX User Manual

5.3 Ishikawa Diagrams
Rail low:
Min. for 208 VAC = 220 VDC
Min. for 400 VAC = 427 VDC
Blown F3 fuse on A1
HV Inverter PCB
Blown IGBTs on A1
HV Inverter PCB
Power Supply
HV relay defective
HV Ouptut PCB
defective
HV output cable
defective
Power Supply
CV-6SLX User Manual

Ishikawa Diagram #7: Rail Undervoltage Fault

Possible Causes
Power Supply
R1 misadjusted on A3 HV Regulator PCB.
TP85 to ref:
208 V = 2.2 VDC
400 V = 4.27 VDC
Rail to A3 HV Reg. PCB incorrect.
A3 TP29 to ref: 10V = 1000 VDC for
actual rail

Ishikawa Diagram #8: HV Overcurrent Fault

Possible Causes
FPS
HV relay control voltage missing.
J103 pin 6 = +24VDC
Improper grounding
Rail low – A1 HV Inverter PCB
TP24/TP26 = actual rail voltage
AC phase missing
Mains
Loose cables
Fluctuating line voltage
Mains
5-10
Section 5: Troubleshooting
Consequence
Rail Undervoltage LED
lights red
(see Table 6-12)
AC mains input not correct or
low (phase-to phase, phase-
to-ground readings)
Consequence
HV Overcurrent LED
lights red
(see Table 6-13)
Incorrect mains input voltage
or phase missing
5-12)
5-13)
0101-8242-0, Rev. C