Voltmeter/Ammeter Help Displays - Miller Syncrowave 250 DX Technical Manual

6-2. Voltmeter/Ammeter Help Displays

.
All directions are in reference to the front
of the unit. All circuitry referred to is lo-
cated inside the unit.
0 Help 0 Display
Indicates a short in the thermal protection cir-
cuitry located on the transformer of the unit.
1 Help1 Display
An SCR overcurrent condition has occurred.
Turn power off and back on to correct condi-
tion. If problem continues, check hall device
HD1 (see Section 6-3 or 6-4).
2 Help 2 Display
Indicates an open in the thermal protection
circuitry located on the transformer of the
unit.
3 Help 3 Display
Indicates the transformer of the unit has
overheated. The unit has shut down to allow
the fan to cool it (see Section 3-4). Operation
0
V
HLP
A
−−0
5 6
V
HLP
A
−−5
10 11
V
HLP
A
−10
TM-359 Page 62
will continue when the unit has cooled.
4 Help 4 Display
Indicates an open in the thermal protection
circuitry located on the rectifier assembly of
the unit.
5 Help 5 Display
Indicates the rectifier assembly of the unit
has overheated. The unit has shut down to
allow the fan to cool it (see Section 3-4). Op-
eration will continue when the unit has
cooled.
6 Help 6 Display
Not used.
7 Help 7 Display
Not used.
8 Help 8 Display
Not used.
1 2
V
HLP
A
−−1
7
V
HLP
A
−−6
12
V
HLP
A
−11
9
Indicates a short in the thermal protection cir-
cuitry located on the rectifier assembly of the
unit.
10 Help 10 Display
Indicates Remote Output control is acti-
vated. Release Remote Output control to
clear help message.
11 Help 11 Display
Indicates Output Selector switch is not in
correct position (see Section 4-2).
12 Help 12 Display
Indicates a non-allowable set-up on the front
panel.
13 Help 13 Display
AIC option output enable signal broken
causing weld output to stop, but gas contin-
ues to flow. Check to see if pins C and D of
10-pin connector are shorted together.
3
V
HLP HLP
A
−−2
8
V
HLP HLP
A
−−7
13
V
HLP HLP
A
−12
Help 9 Display
4
V
HLP
A
−−3 −−4
9
V
HLP
A
−−8 −−9
V
A
−13
Syncrowave 250 DX
V
A
V
A