Pneumatic Rack ATC Wiring Reference
Pneumatic Rack ATC reference for DWC4848 and DWC5100 machines.
Pneumatic Rack ATC configuration.
| Item | Assignment | Notes |
|---|---|---|
| Machines | DWC4848 / DWC5100 | Pneumatic Rack ATC configuration |
| Controller | PlanetCNC MK3 | Current commercial controller platform |
| ATC Type | Pneumatic Rack | Rack move output uses Relay Board #2 K1 |
| Relay Boards | Two 4-channel relay boards | Board #1 and Board #2 |
| Cable A | Bed Cable | 4-conductor cable to control box |
| Cable B | Spindle Cable | 4-conductor cable to valve manifold |
| Cable C | Gantry Cable | 10-conductor cable to control box |
Latest approved wiring placard.
All inputs are 24VDC.
| Input | Function | OmniControl I/O State |
|---|---|---|
| IN1 | Unassigned | — |
| IN2 | Touch Plate (Movable Tool Height Sensor) | — |
| IN3 | Fixed Tool Length Measure Sensor (Electronic Touch Sensor) | — |
| IN4 | Tool Clamp Sensor | Green = Clamp Open Red = Clamp Closed |
| IN5 | Tool Present Sensor | Green = Tool Loaded Red = Tool Not Present |
Controller output functions and relay relationship.
| Output | Function | Notes / Details |
|---|---|---|
| OUT1 | Spindle On / Off | Relay Board #1 → K1 |
| OUT2 | Laser PWM | — |
| OUT3 | ATC Rack Move Solenoid | Relay Board #2 → K1 |
| OUT5 | Dust Hood Lift Solenoid | Relay Board #1 → K2 |
| OUT6 | 0–5V Spindle Speed | 0 RPM = 0.00V 24,000 RPM = 5.00V |
| OUT7 | Tool Release Solenoid | Relay Board #1 → K4 |
| OUT8 | Dust Blow-Off Solenoid | Relay Board #1 → K3 |
Two 4-channel relay boards used on DWC4848 / DWC5100 Pneumatic Rack ATC.
| Relay | Function | Output |
|---|---|---|
| K1 | Spindle On / Off | OUT1 |
| K2 | Dust Hood Lift Solenoid | OUT5 |
| K3 | Dust Blow-Off Solenoid | OUT8 |
| K4 | Tool Release Solenoid | OUT7 |
| Relay | Function | Output |
|---|---|---|
| K1 | ATC Rack Move Solenoid | OUT3 |
| K2 | Spare | — |
| K3 | Spare | — |
| K4 | Spare | — |
4-conductor cable from bed to control box.
| Wire Color | Signal / Function | Notes |
|---|---|---|
| Red | +24VDC | Bed cable |
| Black | 24V Common | Bed cable |
| White | Input 3 — Fixed Tool Length Measure Sensor | Sensor signal |
| Green | Relay Board #2 K1 — ATC Rack Move Solenoid | Rack move solenoid |
4-conductor cable from spindle to valve manifold area.
| Wire Color | Signal / Function | Notes |
|---|---|---|
| Red | +24VDC | Spindle cable |
| Black | 24V Common | Spindle cable |
| White | Input 4 — Tool Clamp Sensor | Sensor signal |
| Green | Input 5 — Tool Present Sensor | Sensor signal |
10-conductor cable from valve manifold area to control box.
| Wire Color | Signal / Function | Notes |
|---|---|---|
| Orange | Spindle Air Seal (+24VDC) | Valve manifold |
| Red | +24VDC | Power |
| Black | 24V Common / 24V− | Common |
| Purple | Tool Release Solenoid (Output 7) | Relay Board #1 → K4 |
| Yellow | Dust Blow-Off Solenoid (Output 8) | Relay Board #1 → K3 |
| Blue | Dust Hood Lift Solenoid (Output 5) | Relay Board #1 → K2 |
| Gray | Tool Clamp Sensor Signal (Input 4) | Sensor signal |
| Brown | Tool Present Sensor Signal (Input 5) | Sensor signal |
| White | Spare | Not assigned |
| Green | Ground (Chassis) | Chassis ground |
Fast checks for common Pneumatic Rack ATC service issues.
Manufacturer resources and DWC support references.