User`s manual

263
CHAPTER 8 TROUBLESHOOTING
8
8.4 Troubleshooting by Symptoms 8.4.6 When the waveform is not output properly with the PWM output mode being set
8.4.6 When the waveform is not output properly with the PWM
output mode being set
8.4.7 When the input from the general input 1 to 6 terminals (IN1 to
IN6) is not done
8.4.8 When the output from the general output 1 to 8 terminals
(OUT1 to OUT8) is not done
Check item Corrective action
Does the CPU module indicate any errors?
When the CPU module indicates an error, refer to the following:
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
Are Coincidence output 1 to 8 assigned properly?
Check "Coincidence output 1 to 8 channel assignment setting" in the switch
setting and CH1 PWM output assignment (Un\G1300).
Is a voltage applied to the power supply terminal for
external output?
Apply a voltage to the power supply terminal for external output.
Is the external wiring of the coincidence output 1 to 8
terminals (EQU1 to EQU8) correct?
Check the external wiring and correct errors.
Is the load other than a resistive load connected to the
coincidence output 1 to 8 terminals (EQU1 to EQU8)?
Connect a resistive load since the output waveform is highly distorted by
connecting the load other than a resistive load.
Measures
against
noise
Are the shielded twisted pair cables used for
the PWM output wiring?
Use the shielded twisted pair cables for the PWM output wiring.
Have noise reduction measures been taken
to the inside of the control panel or the
adjacent devices?
Take noise reduction measures such as attaching a CR surge suppressor to
the magnet switch.
Are high voltage equipments separated far
enough from the PWM output wiring?
Bundle the PWM output wires and put them in a single tube, and keep a
distance of 150mm or more from the power lines in the control panel.
Does any noise come from the grounded part
of the QD65PD2?
Separate the grounding cable of the QD65PD2 from the grounded part.
When the QD65PD2 case contacts with the grounded part, separate the case
from the part.
Check item Corrective action
Does the CPU module indicate any errors?
When the CPU module indicates an error, refer to the following:
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
Is the external wiring of the general input 1 to 6 terminals
(IN1 to IN6) correct?
Check the external wiring and correct errors.
Check item Corrective action
Does the CPU module indicate any errors?
When the CPU module indicates an error, refer to the following:
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
Is a voltage applied to the power supply terminal for
external output?
Apply a voltage to the power supply terminal for external output.
Is the external wiring of the general output 1 to 8 terminals
(OUT1 to OUT8) correct?
Check the external wiring and correct errors.