Hypertherm HD4070 Rev.8 User Manual
Page 173
MAINTENANCE
5-26
HD4070
Instruction Manual
3
LEDN9
Signal Name
Function
LEDN9-1
Not Used
—
LEDN9-2
Not Used
—
LEDN9-3
CNC machine cable installed
Detects CNC cable. Jumper required from CNC
LEDN9-4
CNC spare input 1
—
LEDN9-5
CNC spare input 2
—
LEDN9-6
CNC plasma sync
Keeps plasma system in pre-flow (used for synchronizing
multiple systems)
LEDN9-7
CNC corner hold
THC motion stopped (at corner)
LEDN9-8
CNC system start
Cycle start (plasma start)
LEDN9-9
Gas error
Error detected in gas system
LEDN9-10
Not Used
—
LEDN10
Signal Name
Function
LEDN10-1
Not Used
—
LEDN10-2
Slave input power active
—
LEDN10-3
Slave missing phase detect
—
LEDN10-4
Slave chopper #1 temp OK
—
LEDN10-5
Slave chopper #2 temp OK
—
LEDN10-6
Slave temp/airflow OK
—
LEDN10-7
Slave output current OK
—
LEDN10-8
Slave door interlock
—
LEDN10-9
Not Used
—
LEDN10-10
Not Used
—
LEDN7
Signal Name
Function
LEDN7-1
CNC motion
Sends start signal to THC
LEDN7-2
Slave 80 Amp select
—
LEDN7-3
Slave 40 Amp select
—
LEDN7-4
Slave 20 Amp select
—
LEDN7-5
Slave 10 Amp select
—
LEDN7-6
Slave 1/10th current
—
LEDN7-7
Slave fan control
—
LEDN7-8
Slave contactor control
—
LEDN7-9
Slave DC output ON/OFF
—
LEDN7-10
CNC transfer
Indicates arc has transferred to work-piece
LEDN8
Signal Name
Function
LEDN8-1
THC2 cycle start
Gives signal for THC to start
LEDN8-2
Pilot arc relay
Turns pilot arc relay ON
LEDN8-3
Transfer 3
LEDN8-4
Transfer 2
Sets various transfer levels, depending on process selected
LEDN8-5
Transfer 1
LEDN8-6
Plasma int spare out
—
LEDN8-7
Torch #2 cooling select
Torch #2 cooling solenoid turns ON
LEDN8-8
Torch #1 cooling select
Torch #1 cooling solenoid turns ON
LEDN8-9
Pump/fan control
Large fan in power supply turns ON
LEDN8-10
Surge injection select
Selects different surge levels (normal/marking)