Amada HF-2500A, Operation Manual, Page: 92 / 164

CHAPTER 6: MAINTENANCE
HF-2500A HIGH FREQUENCY WELD CONTROL
6-4 990-371
Alarm Message Description Corrective Action
CURRENT 2
GREATER THAN
UPPER LIMIT
Actual weld current is greater than the
user set Upper Limit value for Weld2.
Reset the Upper Limit for Weld2 to a larger value.
CURRENT 1
LOWER THAN
LOWER LIMIT
Actual weld current is less than the user
set Lower Limit value for Weld1.
Weld splash can cause the actual weld current to
drop below the user set Lower Limit for Weld1.
Add upslope to reduce weld splash.
Reset the lower Limit for Weld1 to a smaller
value.
CURRENT 2
LOWER THAN
LOWER LIMIT
Actual weld current is less than the user
set Lower Limit value for Weld2.
Weld splash can cause the actual weld current to
drop below the user set Lower Limit for Weld2.
Add upslope to reduce weld splash.
Reset the lower Limit for Weld2 to a smaller
value.
EMERGENCY STOP
- OPERATOR
ACTIVATED The Operator Emergency Stop switch has
been activated. All power to the HF-
2500A is immediately terminated.
Remove any unsafe operating conditions at the
welding electrodes.
Reset the Operator Emergency Stop switch.
Recycle power on the HF-2500A.
CHECK VOLTAGE
CABLE No electrode voltage measurement was
made.
Verity that the Voltage Sense Cable is properly
connected to the electrodes or electrode holder.
NOTE: Polarity is not important for the cable
connection.
CURRENT 1
GREATER THAN
UPPER LIMIT
Actual weld current is greater than the
user set Upper Limit value for Weld1.
Reset the Upper Limit for Weld1 to a larger value.
ENERGY SETTING
TOO SMALL
While in the voltage or power feedback
mode, the HF-2500A could not control
the energy setting because the required
current was smaller than the minimum
current specified.
Increase the energy setting.
FIRING SWITCH
BEFORE FOOT
SWITCH
The Firing Switch input has been
activated before the Foot Switch has been
activated, preventing weld current from
flowing.
Check the weld head for an improperly adjusted
firing switch.
Automation Only - Check the timing on the PLC
control lines to the Firing Switch and Foot Switch
inputs.
FIRING DIDN’T
CLOSE IN 10
SECONDS
The Firing Switch on an AMADA WELD
TECH air actuated weld head did not
activate within 10 seconds after the Foot
Switch was initially activated.
Press RUN and readjust the air pressure to the
AMADA WELD TECH air actuated weld head.
ILLEGAL
SECURITY CODE
ENTERED The wrong security code was entered to
de-activate the System, Schedule, or
Calibration Lock protection features.
Press MENU, select System Security, then enter
the correct access code to turn off System,
Schedule, or Calibration Lock protection features.
NOTE: Entering a security code of 280 will
always unlock the system.