Tweco A40 CutMaster - Manual (Page 79)

CUTMASTER A40
Manual 0-4978 SERVICE 5-3
5.04 FAULT INDICATOR
At initial power up, two lights will temporarily illuminate for 2-3
seconds to show the version of software used.
To determine the first digit, count the function indicators left
to right, 1 through 5. To determine the second digit count the
pressure indicators, reading from bottom to top, 0 through 7.
In the example below the Temp indicator and 75 psi indicators
are ON indicating the version would be 2.3.
A
+
PSI BAR
MAX MAX
MIN MIN
!
1 2 3 4
Art# A-07988
MIN MAX
0
1
2
3
4
5
6
7
5
When the
!
"Fault" indicator is ON or blinking it will be ac-
companied by one of the pressure indicator lights depending
on what the Fault is. Only one of these faults will be displayed
at one time. If more than one fault exists, when the first fault is
corrected and cleared, the next fault will then be displayed. It is
possible to have a fault indicated in the function indicators and
another fault indicated in the pressure indicators. The following
table shows each of the Faults possible.
Pressure
Indicator Fault
Max Over Pressure
90 Internal Error
85 Shorted Torch
80 Consumables Missing
75 Start Error
70 Parts in Place
65 Input Power
Min Under Pressure
NOTE
Fault explanations are covered in the following
tables.
Explanation of Faults
" UNDER PRESSURE: Indicates that operating pressure
is set too low and power supply output power will be
disabled.
INPUT POWER: Indicates primary line voltage is outside
the operating limits of the power supply as selected
by the setting of INPUT VOLTAGE SELECTION SWITCH
at the rear of the unit. Low is 208/230 VAC and high
is 460 VAC.
S
LO
HI
Art # A-08316
PART IN PLACE: Indicates that the shield cup is not prop-
erly installed or tightened.
START ERROR: Indicates that the START SIGNAL was ac-
tive (ie. Torch Trigger depressed, hand held pendant
switch ON or CNC signal for torch ON) during one of
three conditions:
1) During initial power up when ON/OFF switch is turned
to ON position
2) When fault which had been disabling the system is
cleared.
3) When the FUNCTION CONTROL SWITCH Mode is
moved from SET position to any of the other three (3)
modes of operation.
CONSUMABLES MISSING: Indicates that the electrode,
start cartridge or tip is missing or excessively worn.
SHORTED TORCH: Indicates the torch or lead has a shorted
condition between positive and negative leads.
INTERNAL ERROR: Indicates a microprocessor error.
OVER PRESSURE: Indicates that operating pressure is set
too high. The Error Indicator will not flash when the
pressure is above 95 PSI. This LED will remain ON
and the system will operate but pilot starting and cut
performance may be affected.
NOTE
The cooling fans will turn ON as soon as the unit
is turned ON. After the unit is idle for ten (10)
minutes the fans will turn OFF. The fans will come
back ON as soon as the torch switch (Start Signal)
is activated or if the unit is turned OFF, then turned
ON again. If an over temperature condition occurs,
the fans will continue to run while the condition
exists and for a ten (10) minute period once the
condition is cleared.