10.3.6
E006 Input Voltage Too High
Fatal, meaning you have to power down to continue welding
Yes
Acknowledge, meaning the error will exist as long as the unit is
powered on.
(Note, welding can continue while the error exists)
No
Description:
When power is initially applied to the system, it goes through a series
of relay
closures / opens and watches the primary voltage closely. If the
voltage is sensed to
be a damaging level (>470VDC on the capacitor
banks - J1 on each switch board of
the N800i, J1, J4), the relays are turned off and this error is displayed. The system
must be powered down
and examined/ fixed prior to anything else.
Likely problems or items to check - in order from most likely to least
likely:
1. Measure the primary AC voltage and make sure it is within the
correct range for
the system and the voltage setting. DC voltage
on the switch boards must be
between 225VDC and 470VDC.
2. Improper adjustment of voltage-to-frequency circuit to switch
board. Each switch
board (1 board in the case of the N800i) has a
pair of wires to provide an open
collector signal to the control
board. These pairs carry a near 15V signal with a
frequency in the
3000Hz range that represents the primary voltage. The signal is
controlled by the switch board, which provides an opto-coupled
linear voltage-to-
frequency signal to the control board for sensing. If this frequency is below
1000Hz, it will be read by the control as zero (0Hz). Relationship is
[y=0.0904x+0.28 where x= Vin/
10 and y= freq in kHz]. Once this condition
occurs, the control
may not update the frequency on the display. The reading
must
be in the normal range for this adjustment to be made. As you
turn the
potentiometer on the switch board to adjust the V-F
measurement, observe F18
on the user interface on both left and
right sides to tune it in to the measured
voltage on J1 of the
switch board. Press the time up/down arrows to switch from
left/
right measurements and to display. If this error occurs and you
suspect an
adjustment is needed, turn the potentiometer to half
way of the full scale and tune
from there. You'll have to get past
this error to tune the voltage readings correctly,
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