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B-15
WIRE FEED OVERLOAD PROTECTION
The DH-10 has solid-state overload protection of the
wire drive motor. If the wire drive motor becomes
overloaded for an extended period of time, the protec-
tion circuitry turns off the power source, wire feed and
gas solenoid, and then displays "H30" on the WFS
display (with blank Voltage display). This indicates the
wire drive motor is overloaded and will remain shut
down for about 30 seconds before the unit will auto-
matically reset. The "H30" display decrements every
second until it reaches "H00". At that time, the unit
resets automatically and the previous displays will
return indicating the unit is ready to operate again.
Overloads can result from improper tip size, liner,
drive rolls, or guide tubes, obstructions or bends in the
gun cable, feeding wire that is larger than the rated
capacity of the feeder or any other factors that would
impede normal wire feeding. (See "Avoiding Wire
Feeding Problems" in the MAINTENANCE section).
GROUNDING LEAD PROTECTOR
The frame of the DH-10 Control is grounded to the
frame of the power source by a lead in the control
cable. An overload protector prevents welding current
from damaging this lead if the electrode circuit touch-
es the wire feeder frame while the electrode is electri-
cally hot.
If such a grounding lead fault occurs, the WFS display
will show "GLP," (with blank Voltage display) and the
trigger circuit will be disabled. To reset the circuit,
release the trigger, make sure that the electrode is not
touching the wire feeder frame, and then either press
any key on the keypad or close the trigger. When the
GLP circuit is reset, the "GLP" display is removed and
the wire feeder is returned to normal operating mode.
EXPLANATION OF PROMPTING
AND ERROR MESSAGES
Display
Prompt or Error
Acc
Displayed on Voltage display, indicates WFS
display is showing acceleration setting, "1" to
"5" (See "Acceleration Selection" in this sec-
tion).
Off
Displayed on WFS and voltage displays: indi-
cates limits for WFS or voltage are off for the
displayed feeder and procedure. (For Codes
11433 and above only)
OPERATION
SEC
Displayed on WFS display, indicates Voltage
display is showing a Timer setting in sec-
onds. (See "Display Control Keys" in this
section)
GLP
Displayed on WFS display, indicates that the
Grounding Lead Protector circuit was activat-
ed due to excessive current flow into the
wire feeder frame. When the GLP circuit is
activated the wire feeder is disabled (the trig-
ger output to the power source is opened up,
the motor is stopped, and the gas solenoid is
turned off). To resume normal operation,
release the trigger, make sure that the elec-
trode is not touching the wire feeder frame,
and then either press a key on the keypad or
close the trigger. (See "Grounding Lead
Protector" in this section)
Cld
Displayed on Voltage display when Cold
Feed Forward or Cold Feed Reverse Key is
pressed, or Cold Feed Trigger mode is
selected. Indicates wire is fed "cold" (no
weld voltage) at the speed indicated on the
WFS display. (See "Operation Keys" and
"Trigger Mode Selection" in this section).
---
Displayed on Voltage or WFS displays with
RUN-IN selected, indicates setting will match
those set for Weld Voltage and Wire Feed
Speed (See "Display Control Keys" in this
section).
HXX
Displayed on WFS display, indicates wire feed over-
load. XX indicates time remaining in seconds before
unit resets automatically. (See "Wire Feed Overload
Protection" in this section and "Avoiding Wire
Feeding Problems" in the MAINTENANCE section).
Er
EEPROM error. Usually occurs at power-up.
Indicates one or more of the recalled settings is out
of acceptable limits. Press any key to return to nor-
mal operation. Be sure to check all voltage, wire feed
speed, acceleration and timer settings before you
proceed.
DH-10
B-15
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