Hypertherm HyPrecision 100D Instruction Manual page 68

Motor Fault
Fuse in the control has blown. A
short in a device on the PLC output
may have failed causing the fuse to
blow. A less likely scenario would
be a short in the motor wiring for the
boost motor or main motor.
The main motor thermal overload
(OL-MAIN) may have tripped.
Too Many Motor Starts Per Hour
The motor has been started too many
times in 15 minutes.
Hydraulic pump does not make pressure or makes low pressure.
Defective cut pressure select
solenoid.
Defective cut pressure control valve.
Defective hydraulic pump and/or
compensator.
Defective relief valve.
Pierce pressure is enabled.
Pump will not start.
Power disconnected.
E-Stop depressed.
Pump enclosure door open.
Motor overload relay tripped.
Line fuses blown or missing.
Pump remote key switch in wrong
position.
Check the devices on the PLC outputs to determine what caused
the fuse to blow. If it is a failed solenoid, usually you will see
the plastic body deformed from heat. Check all cables for
damage. Replace any faulty parts.
Reset by pushing the reset button on the thermal overload. Refer
to Electric Motors in the Electrical System section of this
manual.
Reset the alarm by pressing the FAULT RESET button on the
control panel. Wait 15 minutes to let the motor armature cool
down before starting again.
Manually over-ride valve until replacement arrives.
Replace valve.
Replace pump.
Replace valve.
Change pierce pressure to cut pressure at the display.
Reconnect power.
Check main disconnect.
Pull out all E-stop buttons.
Close door and properly latch disconnect handle.
Check and correct.
Adjust volume stop on pump.
Check and correct.
Change key switch position.
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