Setup Parameters
5 - 18
Modified: 9/17/08
MedWeld 4000 Operator’s Guide
M-032116 Programs #T03300, #T02300 and #T02400
SEC CURRENT SENSOR:
(FAULT)(ALERT)
(NONE)
When operating in the SEC CURRENT firing mode, this fault
occurs when the inverter detects a shorted, malfunctioning or
otherwise defective secondary-current sensor.
WELDING TRANSFORMER:
(FAULT)
This fault is generated when either six or more consecutive half-
cycles or more than four consecutive mid-frequency half-cycles of
the
same
polarity end because the Maximum Primary Current setup
parameter was exceeded.
The fault condition will be generated from the PRI VOLTAGE
firing mode.
DC BUS OVER VOLTAGE:
(FAULT)
This fault condition is generated when the inverter detects that—
while no symptoms or problems were generated from the
condition—the voltage on the DC bus exceeded the inverter’s
maximum safe operating range for two consecutive mid-frequency
cycles.
INVERTER BUS:
(FAULT)
This fault is generated when the inverter detects that the DC bus
voltage dropped by more than 40% of the value measured at the
start of weld time.
On detecting this condition, the inverter immediately disregards
firing signals from the weld processor. The inverter then executes
the error shut-down procedure.
CAPACITOR DISCHARGE:
(FAULT)
This fault condition is generated when the inverter detects that the
energy storage capacitors on the chill plate did not discharge
properly when the charging relay isolation contactor dropped out.
CAPACITOR CHARGING:
(FAULT)
The inverter generates this fault condition when it detects that the
energy storage capacitors could not be charged according to the
predicted profile.
CHARGE/DISCHARGE DUTY CYCLE:
(FAULT)
The inverter generates this fault on detecting that the application is
attempting to operate the isolation contactors at a rate higher than
allowed by the de-rating of the discharge resistors.
