AccuMetal Electrical Cabinet — Parts and Functions
Applies toAccuMetalTopicGeneral
AccuMetal 24, 1.5 kW, 240 V single-phase · rear cabinet, doors open · Thunder Laser USA · Nov 10, 2026 · rev 3
Lockout before you open this door. The cabinet carries 240 V at the breakers and contactors, 48 V DC on the servo bus, and the fiber source stores energy after shutdown. Power off at the main switch, unplug, wait 5 minutes. The Customer column says what a customer may touch; everything else is a Thunder Laser USA technician's job.
Numbered top to bottom, left to right. Florida demo unit, Nov 2026.
Parts list
| # | Part | What it does | Customer |
|---|---|---|---|
| 1 | Mean Well LRS-100-48 power supply | 48 V, 2.3 A. Powers the focus-motor drive (3) and the cutting head's motorized focus. Separate from the 24 V control supply. | No |
| 2 | Main 24 V power supply (fan-cooled) | Switch-mode supply for the whole 24 V control side: controller, I/O, relays, sensors, solenoids. The fan must run; if it stops, the control side overheats. | No |
| 3 | Leadshine EC503 EtherCAT stepper drive | Drives the cutting head's focus motor. Sits on the EtherCAT chain with the servo drives. ERR / RUN / L/A lights on the front. If autofocus stops moving, start here. | No |
| 4 | Weihong M4 EtherCAT servo drives, 1.0 kW (×3) + 400 W Z | One drive per motor: X, two on Y, Z with brake. Take 240 V in, drive the servos, talk to the controller over EtherCAT (green cables, IN/OUT). Status LED on each; an alarm code here is the first thing to read on a motion fault. | No |
| 5 | Weihong I/O terminal board | Breaks the controller's inputs and outputs out to field wiring: limit switches, door interlocks, E-stop loop, gas valves, lights. DB connector to the controller, screw terminals to the machine. | No |
| 6 | Thunder fan-control board | Thunder Laser's own board. Slide switch sets the enclosure fans to Quiet or Max Power; buzzer and RJ45 link. Spares come from Thunder Laser USA, not Weihong. | Yes: switch |
| 7 | Braking resistor | Finned aluminum block. Absorbs energy from the servos when the gantry decelerates at 2 G. Hot in normal use; keep clear. | No |
| 8 | Circuit breakers: CHNT NXB-63 C50 (3-pole main), NXB-63 C32 (2-pole branch) | The C50 is the machine main; the C32 feeds a branch (laser source / servo bus). A tripped handle sits mid-position. Reset once; if it trips again, stop and call. Repeated C32 trips point at the source or a drive. | Yes: reset once |
| 9 | Contactors: CHNT NXC-18 (×2), CJX2-1810 | Connect 240 V to the servos and the laser source when the controller says the machine is safe. Drop out on E-stop and door-open. You hear them clunk at power-up and again when the laser is enabled. | No |
| 10 | EMI line filter CW4L2-32A-S | Keeps drive and laser noise off your shop power, and shop noise off the machine. Depends on a good cabinet earth bond. | No |
| 11 | Sinoya voltage protector | Upper display is incoming line voltage (246 V in the closeup). Trips the machine if supply sags or surges outside its window. Under ~210 V or over ~250 V under load is a shop-power problem, not a machine fault. Buttons set the limits; leave at factory. | Yes: read only |
| 12 | Weihong Lambda 21E EtherCAT controller | The brain. Runs the NcStudio 2000M control: takes the program from the PC and commands the drives, laser, gas valves and height follower over EtherCAT. POWER and SYSTEM lights on the label. Never power-cycle it with the PC running. | No |
| 13 | Interposing relays (×4) | DIN relays with blue clips. Controller outputs switch these; the relays switch the real loads: contactors, blower, chiller enable, lamp. Relay clicks but the load doesn't run: look at the load side. | No |
| 14 | Power distribution terminals | Green-yellow = earth, blue = neutral, red = live, gray = switched. The incoming feed lands here and fans out to the breakers. Torque-check yearly. | No |
| 15 | Control terminal strip | Gray DIN terminals, numbered. Every control-side wire lands here; the wiring diagram references these numbers. | No |
| 16 | Auxiliary outlets (×2) | Switched 240 V outlets inside the cabinet. Feed the exhaust blower and chiller enable so they run with the machine. | No |
| 17 | Gas-selection solenoid valves | Black-coil valves. The controller opens air, oxygen or nitrogen depending on the layer in the program. Sticking valve = wrong gas or no gas. Listen for the click when a job starts. | No |
| 18 | AirTAC PK510 pressure switch | Mechanical pressure switch, auto reset. Confirms the gas supply is actually up to pressure before a pierce. Set point on the dial; leave at factory. | No |
| 19 | Clamp air regulator and gauge | Sets the air supply to the pneumatic sheet clamps and door cylinder. Not the cutting gas. Clamps always run on air regardless of cutting gas. | Yes |
| 20 | Air filter / regulator, shop-air inlet | First stop for shop air. Traps water and oil and sets the pneumatic working pressure. Drain the bowl daily in humid weather; a wet bowl means the dryer isn't keeping up. | Yes |
| 21 | NNT NITV2050-312L electronic proportional regulator | The controller sends 0–10 V and this sets assist-gas pressure, 0.005–0.9 MPa (to ~130 psi), per layer: cutting and piercing pressure. The red display is the live pressure the head gets; it is the number on the screen. | Yes: read only |
| 22 | Pneumatic valve manifold | Small solenoid bank. Operates the thin-sheet clamps, pressure bar and any pneumatic door or lube functions. | No |
| 23 | Industrial PC: YH350D-I5, 220 V 300 W, Wi-Fi | Runs NcStudio and the 21.5 in display. The antennas are its Wi-Fi. Shut down from Windows before cutting power or NcStudio parameters can corrupt. | Yes: shutdown |
| 24 | Auxiliary module (gray, labeled) | Small boxed module beside the PC. By position, the laser alarm/safety relay or the chiller-flow interface. Confirm from the factory wiring diagram. | No |
| 25 | MAX Photonics fiber laser source, 1.5 kW | Generates the beam. Water-cooled by the chiller's low-temperature circuit. Enabled by the contactors and the controller; interlocked to doors and E-stop. Keep the vents clear. Back-reflection protection lives here; see the KB for the unlock procedure. The armored cable coiled at right is the output fiber: never tighten the coil, hang anything on it, or kink it. | No |
| 26 | Gas inlet bulkheads | Brass fittings with push-in ports on the cabinet wall. Shop air, oxygen and nitrogen connect here from outside. Labeled; do not swap. | Yes: connect |
Closeups
1 · Mean Well LRS-100-48 power supply
2 · Main 24 V power supply (fan-cooled)
3 · Leadshine EC503 EtherCAT stepper drive
4 · Weihong M4 EtherCAT servo drives
5 · Weihong I/O terminal board
6 · Thunder fan-control board
7 · Braking resistor
8 · Circuit breakers
9 · Contactors
10 · EMI line filter CW4L2-32A-S
11 · Sinoya voltage protector
12 · Weihong Lambda 21E EtherCAT controller
13 · Interposing relays (×4)
14 · Power distribution terminals
17 · Gas-selection solenoid valves
18 · AirTAC PK510 pressure switch
19 · Clamp air regulator and gauge
20 · Air filter / regulator
21 · NNT NITV2050-312L electronic proportional regulator
22 · Pneumatic valve manifold
23 · Industrial PC
What a customer may do in this cabinet
- Read the voltage protector (11) and the gas pressure display (21).
- Reset a tripped breaker (8) once. If it trips again, stop.
- Drain the air filter bowl (20); set clamp pressure (19).
- Connect gas lines at the bulkheads (26).
- Flip the fan board switch (6) between Quiet and Max Power.
- Shut the PC (23) down from Windows before cutting power.
Everything else is a Thunder Laser USA technician's job or a guided call. Opening the fiber source or disconnecting the fiber voids the source warranty.
First things to check on a fault
| Symptom | Look at |
|---|---|
| Machine dead, screen on | Breakers (8) · voltage protector (11) · E-stop and door loop at the I/O board (5) |
| Axis alarm / autofocus dead | Drive LEDs (4) · EC503 ERR light (3) · 48 V supply (1) · braking resistor hot? (7) |
| Laser won't fire, motion fine | Source contactor pulled in? (9) · chiller alarm at (24) · source status LEDs (25) |
| No gas / wrong gas | Solenoid click (17) · pressure display (21) · pressure switch (18) · bulkhead (26) · inlet regulator (20) |
| Clamps don't grip | Clamp regulator (19) · manifold (22) · filter bowl (20) |
| Screen frozen / no network | PC (23) · Lambda SYSTEM light (12) |
Parts identified from nameplate photos of the Florida demo unit, Nov 2026. Item 24 still needs the factory wiring diagram. Add BOM part numbers before customer release.
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