Table 5-12 Hvps Rail Undervoltage Led Lights Red - ferrotec Temescal CV-6SLX User Manual

5.4 Troubleshooting Procedures
Before performing the following procedure, perform the procedure described in
section 5.4.1.

Table 5-12 HVPS RAIL UNDERVOLTAGE LED Lights Red

Condition indicated: Rail voltage below 220 V dc (on 208-V units) or 427 V dc (on 400-V units)
NOTE: Nominal rail voltage ranges are 264-323 V dc (for 208-V units) and 509-622 V dc (for 400-V
units)
Symptoms:
TCS displays PSU1_FAIL_ALM (= Power Supply Control Is On failure alarm)
•
HVPS Front Panel: RAIL UNDER VOLTAGE and POWER SUPPLY FAULT LEDs are lit
•
EBC: Fault LED lit in High Voltage section of Diagnostics screen
•
For additional information about this fault mode, see Ishikawa Diagram #7.
Possible Cause
1. System improperly grounded for HV. 1.
2. Incorrect line voltage.
3. Incorrect line phase.
4. Faulty or loose cable connections.
If preceding steps have failed to correct the fault, perform the following procedure:
1. Switch off the power supply.
2. Disconnect HV output cable from HVPS J1.
3. Switch on the power supply and the HV and leave them switched on for no more than 9 seconds, observing whether the
symptom persists during that interval.
DO NOT leave the high voltage on for more than 9 seconds with the HV cable disconnected. Doing so will
result in the emitter's filament burning out.
4. If the symptom is not in evidence during Step 3, troubleshoot the emitter assembly, following the instructions in the e-gun
manual. If the symptom persists during Step 3, reconnect the HV output cable to HVPS J1, switch the power supply back
on, and proceed with the troubleshooting steps described below.
Possible Cause
5. Fault conditions whose investigation
requires removal of HVPS top cover.
CV-6SLX User Manual
DANGER: HIGH VOLTAGE
Follow grounding instructions provided in e-gun manual.
2. Confirm line voltage as per manual.
3. Confirm line phase as per specifications.
4. Make sure that all power module and FPS cable connections are correctly
and securely made.
CAUTION
5. Contact Temescal Field Service.
5-22
Section 5: Troubleshooting
Procedure
Procedure
0101-8242-0, Rev. C