CNC4PC C11G - Noise in System; Motors Not Smooth; I;O Pin Not Working

C11G (Rev. 8.2) User Manual
Revision: 01/27/2010 http://cnc4pc.com/TechDocs/C11GR8_2_User_Manual.pdf 19/21
POSSIBLE CAUSE
POSSIBLE SOLUTIONS
- The EN terminal (Enable Outputs) is
not enabled. The board requires to be
externally enabled.
- Make sure you are providing +5vdc to
the EN terminal. This +5vdc can be
taken from the terminal next to it.
- The Safety Charge Pump is not
configured. The Safety Charge Pump
can either be configured in the control
software or disabled by moving the
jumper to the disable position.
- Start by disabling the SCHP. Enable it
and configure it once your system is
setup.
- The parallel cable is not well
connected to the PC parallel port.
- Check if the parallel port is well
connected to the PC.
SYMPTOM 3: THERE IS NOISE IN THE SYSTEM, OR THE MOTORS DO NOT
MOVE SMOOTHLY.
POSSIBLE CAUSE
POSSIBLE SOLUTIONS
- The board could be underpowered.
- Make sure you are using a +5vdc
400mA power supply.
- There could be a short that could be
draining the power to the board.
- Check that there are no hot spots in the
board or it’s connections.
- Measure the board’s power
consumption, it should be less than
400mA (depending on the features
used).
- Blown chips could create an internal
short and end up drawing power that can
affect how other chips work.
- There could be an external noise
source that could be introducing
noise into the system.
- Try using shielded cables.
- Try to isolate VFDs or AC servos, etc.
- Try using 103. 0.1mF caps between the
I/O terminal and a ground of the board.
SYMPTOM 4: A I/O PIN MIGHT NOT BE WORKING.