IAI R-unit RSEL, Инструкция по эксплуатации, Страница: 640 / 844

Chapter
11 T
roubleshooting
11.1 Troubleshooting
11-1
ME0392-4C
11.1 Troubleshooting
If a problem occurs, check the following points first in order to ensure quick recovery and prevent
recurrence of the problem.
(1) Check the status LED of each RSEL system device
Check the SCON controller LED status for each master unit, driver unit, simple absolute unit,
SCON expansion unit or PIO/SIO/SCON expansion unit connected.
(2) Check for abnormality in the host device (PLC, etc.)
(3) Check the control power supply, motor power supply and field network power supply voltages
Check for momentary power failure, voltage drop, power failure, etc.
(4) Confirm the generated alarm
Check the alarm information with the teaching tool.
(5) Check the connectors for disconnection or incomplete connection
(6) Check the cables for connection error, disconnection or snagging.
Cut off the main power supply of the equipment (to avoid electric shock) and remove the cables
around the measurement point (to avoid conductivity through the surrounding circuit) before
checking the conductivity.
(7) Check the network terminal resistor mounting status and resistance
(8) Check the I/O signals
Use a teaching pendant to check for inconsistency or abnormality in the input/output signal
status of the host device and RSEL system.
(9) Check the noise elimination measures (grounding, connection of noise suppressor, etc.)
(10) Check the events leading to the occurrence of the problem, as well as the operating conditions
at the time of occurrence
(11) Analyze the cause
(12) Countermeasures
Caution
● When proceeding with troubleshooting, exclude normally functioning parts from the
targets to narrow down the causes.
● First, check (1) to (12) so that countermeasures can be taken swiftly.