The C25XP-MULTIFUNCTION CNC BOARD, Rev. 1.1, is a versatile device designed to integrate with motion controllers or parallel ports for CNC applications. It features a microcontroller-based Safety Charge Pump (SCHP) and offers a range of input/output capabilities, making it suitable for various CNC projects.
Function Description:
The C25XP board serves as an interface between a motion controller (or parallel port) and the various components of a CNC machine, such as spindle control, E-Stop mechanisms, and general-purpose relays. It incorporates a PWM-based speed control for spindles and includes built-in electromechanical relays for spindle control (with NO and NC positions) and general-purpose applications. The system actively monitors E-Stop conditions and the Safety Charge Pump, enhancing operational safety.
Important Technical Specifications:
The board can be powered by a regulated voltage between +10VDC and +30VDC. It features optoisolated inputs, operating at 5-24VDC, ensuring robust noise immunity.
I/O Specifications:
The board provides a total of 51 I/O pins across three ports:
- Port 1: 5 inputs, 12 outputs (total 17)
- Port 2: 13 inputs, 4 outputs (total 17)
- Port 3 (ESS): 13 inputs, 4 outputs (total 17)
- On-state voltage range: 5 to 24VDC
- Maximum off-state voltage: 0.8V
- Typical signal delay: 2.8µS
Digital Output TTL Specifications:
- Maximum output voltage: 5VDC
- Maximum output current: 50mA
- Maximum off-state voltage: 0.44V
- Maximum supported frequency: 400KHz
- Typical signal delay: 10nS
- Time of transition to high impedance state: 12s*
Open Collector Output Specifications:
- Maximum output voltage: 60VDC
- Maximum output current: 2A
- Typical signal delay: 0.5µS
Usage Features:
- Direct Connection: Connects directly to a motion controller or parallel ports.
- Spindle Control: Built-in PWM-based speed control and two electromechanical relays with Normally Open (NO) and Normally Closed (NC) positions for spindle control. These relays are configurable for spindle start, stop, CCW, and CW functions.
- General Purpose Relay: An additional electromechanical relay with NO and NC positions is available for general purposes, selectable for Port 2, pin 16 or 17.
- E-Stop Terminal: Dedicated E-Stop terminal (Pin 10, Port 1) which is tied to the enable line. A fault or E-Stop triggers a low signal for 5 seconds to notify the controller before resetting to high.
- Optoisolated Inputs: Inputs are optoisolated and operate at 5-24VDC, providing protection and signal integrity.
- Open Collector Outputs: Pins 1, 14, 16, and 17 are open collector outputs, suitable for connecting relays, LEDs, lamps, or alarms.
- Screw-On Connections: All terminals feature screw-on connections for secure and reliable wiring.
- VFD Operation Mode Jumper: Allows selection of the VFD operation mode.
- Analog Output for Spindle Speed Control: Provides a 0-10V analog output for variable spindle speed control.
- Source Outputs:
- 5VDC Source Output: Available for powering sensors or other low-voltage cards.
- 10-30VDC Source Output: Available for powering sensors or other cards requiring a higher voltage.
- Configuration Jumpers:
- SCHP Operation Mode: Jumper-selectable to enable or disable the Safety Charge Pump.
- Mode US or INT: Jumper for selecting between US and INT modes.
- Pin 16 or 17: Jumper to select which pin (16 or 17) controls the general-purpose relay.
- DIN Rail Mountable: Designed for easy installation on a DIN rail.
Maintenance Features:
- Status LEDs:
- Power LEDs: Indicate the power status of the board.
- Indicator LEDs: Provide visual feedback for various functions.
- Status LEDs: General status indicators.
- LEDs Port 1, Port 2, Port 3: Indicate activity on the respective input/output connections.
- LEDs Axis: Indicate activity related to axis control.
- LEDs Relays: Show the status of the relays.
- LEDs Open Collector: Indicate the status of the open collector outputs.
- Clear Labeling: All terminals and jumpers are clearly labeled for easy identification and configuration.
Safety Considerations:
The manual emphasizes the importance of caution when using CNC machines, stating that they can be dangerous. It explicitly states that neither DUNCAN USA, LLC nor Arturo Duncan are liable for accidents resulting from improper use. The product is not a fail-safe device and should not be used in life support systems or other applications where its failure could cause property damage, bodily injury, or loss of life. Users are warned to check the polarity and voltage of the external power source (10VDC to 30VDC) to prevent damage to the board or power source from overvoltage or reverse-polarity.
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