Relating To The I/O - Yamaha SRCP User Manual

13-3-2 Relating to the I/O

No. Symptom Possible Cause
1 Output signal 1) Wiring to external
cannot be devices is
controlled. incorrect.
• In cases other
than cause 2,
the output
Misprogramming
2)
signal cannot
be controlled
even with the
3) Output transistor
manual
is defective.
instruction of
TPB general-
purpose output.
2 Robot will not 1) Return-to-origin
move even has not yet been
with dedicated completed.
command
2) Program cannot
input.
be run.
Signal pulse width
3)
is too narrow.
4) Time interval
before inputting a
dedicated command
after canceling
emergency stop is
too short.
5) Interlock signal
remains off.
Another dedicated
6)
command input is
on.
13-3 Troubleshooting for Specific Symptom
Items to Check
• Check the wiring.
• Check the operation with the manual
instruction of the TPB general-purpose
output. (Refer to "7-4 Manual Control
of General-Purpose Output".)
• Connect the TPB and check the
program.
• Measure the voltage at the PLC input
terminal.
ON: 0.5V or less.
OFF: +IN COM (+24V)
• Connect the TPB and check the
operation.
• Connect the TPB and check the
operation.
• Check that the signal pulse width is
50ms or more.
• After canceling emergency stop, allow
at least 200ms before inputting a
dedicated command before inputting a
dedicated command.
• Check the signal by using the TPB DIO
monitor.
• Check the signal input (by using a PLC
monitor, etc.).
Action
• Make the correct wiring by referring to
the connection diagram.
• Correct the program.
• Replace the SRCP controller if the
output transistor is defective.
• Reperform return-to-origin.
• Eliminate the cause of error by
referring to the error message.
• Increase the signal pulse width ("on"
duration).
• Increase the delay time.
• Turn on the interlock signal.
• Turn off the dedicated command input.
13-
13
9