Amada HF-2500A, Operation Manual, Page: 93 / 164

CHAPTER 6: MAINTENANCE
HF-2500A HIGH FREQUENCY WELD CONTROL
990-371 6-5
Alarm Message Description Corrective Action
INHIBIT CONTROL
SIGNALS
ACTIVATED
The Inhibit input control signal is
activated, preventing the HF-2500A from
continuing to operate.
NOTE: Activating the Inhibit input
terminates only future operations. It does
NOT terminate any present HF-2500A
operation.
Remove the Inhibit signal condition preventing
further HF-2500A operation.
NOTE: The correct removal action depends on
how the control signal I/O logic was programmed
by the user.
INPUT TOO LARGE
The user has attempted to program a weld
energy or time that exceeds the capability
of the HF-2500A.
Re-program welding parameters to be within the
capability of the HF-2500A.
INPUT TOO SMALL
The user has attempted to program a weld
energy or time that is below the capability
of the HF-2500A.
Re-program welding parameters to be within the
capability of the HF-2500A.
LOAD
RESISTANCE TOO
HIGH
The total electrical resistance, comprised
of the weld cables, weld head, and parts
to be welded, has exceeded the drive
capability of the HF-2500A.
The HF-2500A will not be able to
maintain the user set weld parameters.
Reduce the total electrical resistance by reducing
the weld cable length.
Reduce the total electrical resistance by increasing
the weld cable diameter.
Check cable and weld head connections.
Verify that all three phases from the input power
lines are functioning
LOW BATTERY
The battery supplying backup power to
the HF-2500A internal memory is out of
energy.
Replace the memory battery on the Main Control
PCB.
CAUTION: Replace the battery while power is
ON, otherwise all memory contents will be lost.
LOWER LIMIT
GREATER THAN
UPPER LIMIT
The user has tried to program a Lower
Limit value that is greater than the Upper
Limit value for Weld1 or Weld2 time
periods.
Re-program the invalid Lower Limit value.
NO WELD
TRANSFORMER
DETECTED
Cable connecting the Control and Power
PCB’s is open.
Cable connecting the Power PCB to the
Weld Transformer is open.
Verify installation of the welding
transformer/rectifier module connections.
POWER 1
GREATER THAN
UPPER LIMIT
Actual weld power is greater than the user
set Upper Limit value for Weld1.
Weld splash can cause the actual weld power to
exceed the user set Upper Limit for Weld1. Add
upslope to reduce weld splash.
Reset the Upper Limit for Weld1 to a larger value.
POWER 2
GREATER THAN
UPPER LIMIT
Actual weld power is greater than the user
set Upper Limit value for Weld2.
Weld splash can cause the actual weld power to
exceed the user set Upper Limit for Weld2. Add
upslope to reduce weld splash.
Reset the Upper Limit for Weld2 to a larger value.