Ultra-Cut – Auto-Cut LEDs, Test Points & Switches
CCM I/O PCB 19X2174
LEDs
D1
D2
D4
D15
D21
D23
D26
D28
GAS_ON
E-STOP_PS
OK_CNC
PSR
CNC_E-STOP
CNC _START
HOLD_START
CNC_PREFLOW
Signal to turn on gas for GCM 1000.
E-Stop OK to power supply.
OK to Move relay (signal to CNC) on.
PSR relay on (sends pilot on to CNC).
Remote E-Stop (TB1-1 & 2) closed.
Start from CNC is on.
Hold Start applied from CNC or THC.
Turns preflow gas on prior to Start signal.
Test Points
All TP voltages except isolated TP’s (TP6, 7,8, 10) are relative to TP1.
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
TP13
TP14
Circuit common (gnd).
29-41 VDC (24 VAC input rectified).
+15 VDC
+5 VDC
-15 VDC
+15 VDC_ISO isolated (measure from TP10, isolated common).
-15 VDC_ISO isolated (measure from TP10, isolated common).
+16 to +18 VDC isolated, supply for isolated input section.
Analog Current Control signal, 0-3.3VDC, to CPU. From GCM 1000
Current Control Pot if SW11 set to “B” position or remote analog current
control input if SW11 set to “A” position (used with SW8-2 on CPU
board).
ISO_GND Common for isolated voltages (TP6,7,8).
Power supply negative (electrode) voltage.
Tip voltage.
Cut Demand to power supply.
Pilot Demand to power supply.
Switches
SW6 OK to Move selects contact closure (SW down) or DC Volts (SW up).
SW11 The default “B” position (up) selects Analog current control from
GCM1000. “A” position (down), along with CPU board SW8-2 on (up),
selects Remote Isolated Analog Current Control from TP1-9 & 10 or J153 & 6.
SW12 Selects divided arc voltage ratio; 50:1 (default), 40:1, 30:1, 16.6:1 (used
for SC-11).
SW13 Ultracut – Autocut Configuration (-1) .
CCM CPU PCB 19X2169
LEDS
D11 on at power up while CPU is initializing then off.
D12 Status Code LED (same as front panel Status LED)
D13 +5 VDC Power
Test Points
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
GND (digital)
AGND (analog gnd)
+5VDC
/WR
+3.3VA voltage supply for analog circuits (relative to TP2).
TEMP_SENSE processor internal temperature signal.
/RD
CLKO processor clock output.
+15VDAC supply for D/A converters.
-15VDAC supply for D/A converters.
3.3V voltage supply.
Switches
SW1
SW3
SW4
SW5
Selects Auto Pilot Restart (-1) and Delayed Restart (-2,-3-4)
Select Preflow times
Select Postflow times
Selects Tip Saver (-1) & Off the Plate (-2). Neither of these are
implemented at this time (5-18-06).
SW8 Sets Pilot time (-1) and Remote Analog Current Control (-2).
SW9 OK to Move Delay. This is not implemented at this time (5-18-06).
GCM 2000 & 2010 Gas Control PCB 19X2219
LEDs
D13
D25
E-STOP_PS Power supply E-Stop is satisified.
Plasma_Enable_PS Plasma enable is on.
D2-D12, D18-D23 Indicates signal sent to Solenoid drive circuit to turn on
Solenoid. It does not necessarily mean the solenoid is on.
It’s fuse could be open, the solenoid defective or an open
connection could prevent the solenoid being on.
Unfortunately diode numbers don’t match SOL numbers but on the PCB each of
the solenoid drive signal LEDs are directly under the zero crossing isolation IC
and the Triac for each SOL. The zero crossing isolation IC’s U # is the same as
the SOL #. The triac’s Q # is also same as the SOL #. For example, U1 and Q1
turn on SOL1. The LED indicating SOL1 has been told to turn is D23 directly
below U1.
Test Points
All TPs referenced to TP1, 4 or 5 unless otherwise stated.
TP1, 4, 5
Circuit Common (gnd)
TP2 120 VAC HOT (reference to TP3)
TP3 120 VAC RET (reference to TP2)
TP6 +5 VDC supply
TP7 -5 VDC supply (not on PCB after rev 19X2219 AE)
TP8 Plasma pressure signal 0-5VDC = 0-130 PSI
TP9 Solenoid Enable signal *
TP10 BCD Backlight signal
TP11 Mode Switch read signal *
TP12 Gas Switch read signal *
TP13 Solenoid Low Bank write signal *
TP14 Solenoid High Bank write signal *
TP15 BCD Low Byte read *
TP16 BCD High Byte read *
TP17 PCB Temperature signal (not used, removed after 19X2219 Rev AE)
These only in 19X2219 Rev AF and later.
TP18 Plasma Inlet Pressure signal (0-4.6V = 0-177 PSI)
TP19 Shield Inlet Pressure signal (0-4.6V = 0-177 PSI)
* These only used for factory troubleshooting, require logic analyzer to read.
Switches
SW1 Programming SW, both sections ON (up) for normal operation.
Power Supply PCB5
LEDs
LED1
LED2
LED3
LED4
LED5
Test Points
TP0
TP1
TP2
TP3
Coolant level.
Missing phase.
Input_NG
Chopper_Temp_Error
not connected
Circuit common (gnd)
+5VDC supply
+15 VDC supply
-15 VDC supply
Power Supply Inverter Module
LEDs
When signal /OCR to CCM is set (code 2-6), one of these LEDs will be latched on. In
150,200 & 300A supplies you can tell which inverter is causing the code by looking for
the LED.
LED1 OCR_A Primary over current inverter section A.
LED2 OCR_B Primary over current inverter section B.
LED3 DCV_ERR Voltage imbalance between capacitor banks A&B.