SECTION 6 Troubleshooting
ESP 400C and 600C Plasma Power Sources
6-2
Fault Indicator
(Front Panel)
Illuminates when there are abnormalities in the
cutting process or when the input voltage falls
±10% outside the normal value. Momentary
illumination is normal. If continuously lit, check
LEDs 3, 4, 5, 7, and 8 on PCB1 for further
diagnosis.
LED 3 – (amber)
Bus Ripple Fault
-
Momentarily illuminates at the beginning of each
cut. Continuously lit during single-phasing or
imbalanced line-to-line voltages of the three phase
input line.(Excessive Ripple) Power Source is shut
down.
LED 4 – (amber) High Bus Fault
– Illuminates
when input line voltage is too high for proper
operation (approx. 20% above nominal line voltage
rating). Power source is shut down.
LED 5 – (amber) Low Bus Fault
– Illuminates
when input line voltage is approx. 20% below
nominal line voltage rating. PS is shut down.
LED 7 – (amber) Arc Voltage Saturation
Fault
– Illuminates when the cutting arc voltage is too
high and cutting current drops below preset level.
LED will extinguish after voltage decreases and
current rises.
LED 8 – (amber) Arc Voltage Cutoff Fault
–
Illuminates when arc voltage increases over the
preset value. PS is shut down.
Summary of Contents for 0558001729
Page 1: ...F 15 657 Jun 2005 Installation Operation and Maintenance for the ESP 400C Plasma Power Source...
Page 6: ...ESP 400C Plasma Power Source Table of Contents iv This page intentionally left blank...
Page 110: ...SECTION 7 Replacement Parts ESP 400C Plasma Power Source 7 10 7 7 Top View...
Page 112: ...SECTION 7 Replacement Parts ESP 400C Plasma Power Source 7 12 7 8 Back Inside View 2 1 4 2 3...
