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APPENDIX D: ALARM MESSAGES
2 KHZ INVERTER WEDLING POWER SUPPLY
990-057
D-3
Alarm Message
Description
Corrective Actions
OVER CURRENT
The input to the Weld Transformer
exceeded 220 amps.
Power Transistor shorted.
Weld Transformer shorted. HF2 Welding Power
Supply is out of calibration. Perform HF2
Calibration procedure using the Main Menu HF2
CALIBRATION option.
OVER CURRENT
Actual weld current is greater than the
Basic Weld Monitor user set Lower
Limit.
Tighten welding process variables.
Change Upper Limit value.
OVER POWER
Actual weld power is greater than the
Basic Weld Monitor user set Lower
Limit.
Tighten welding process variables.
Change Upper Limit value.
OVER RESISTANCE
Actual weld resistance is greater than the
Basic Weld Monitor user set Lower
Limit.
Tighten welding process variables.
Change Upper Limit value.
OVER VOLTAGE
Actual weld voltage is greater than the
Basic Weld Monitor user set Lower
Limit.
Tighten welding process variables.
Change Upper Limit value.
POWER
TRANSISTOR
OVERHEATED
Excessive heat build-up has opened the
Power Transistor circuit thermostat.
Wait for HF2 Welding Power Supply to cool down
and close the internal thermostat.
Reduce welding process duty cycle.
SCHEDULE
LOCKED
System is "Protected" and all weld
schedules are Locked.
To change the System Security Status to
Unprotected, enter the original code. If the
original code was lost, press and hold [ ] and
then press [SAVE]. Release both keys.
SCHEDULES/PROG
RAMS ARE RESET
All weld schedules and Sentry programs
are reset to their factory default values.
Press [RUN] to go to the RUN State.
Press [MENU] to return to the MAIN MENU.
SCHEDULE SAVED
The modified weld schedule has been
saved in permanent memory.
No action required.
SINGLE PHASE
The HF2 detected that the input power
line is a single-phase line.
HF2 will function normally, but will limit the weld
current, voltage, or power to one-half of the
maximum possible setting. AMADA WELD
TECH strongly advises using 3-phase input power.
STANDBY FIRING
SWITCH
The HF2 is waiting for the Force-Firing
Switch in an Air Actuated Weld Head to
close.
Increase Weld Head Down Air pressure
Lower Weld Head Downstop.
Replace Weld Head Force-Firing Switch.
STANDBY REMOTE
SCHEDULE
HF2 is waiting for the BCD weld
schedule code to be placed on the Power
Supply Signals Connector.
Refer to
Chapter 4, Control Signals, Remote Weld
Schedule Selection Input.
STANDBY STOP
COMMAND
HF2 is waiting to be reset to the
beginning weld schedule when the last
weld schedule in a chain is a stop
schedule.
Select starting weld schedule.
Содержание HF2
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