Maintenance - SMC Networks EX140-SMJ1 Series Operation Manual

Maintenance

Mounting and wiring
•
Item to inspect
Are SI unit terminals
(for communication and power
supply) securely connected?
Are the terminating resistance
securely connected to the both ends
of the network (in case this system is
at the end of the network)
Isn't the connecting cable broken.
Replacement parts
•
Item to inspect
CC-Link dedicated cable
SI unit
Power supply
•
Item to inspect
Measure voltage at both ends of the SI unit
controller's power supply to ensure it is
within the specified range.
Measure voltage of the solenoid valve's
power supply to ensure it is within the
specified range.
Criteria
No looseness.
Terminating resistors are connected.
No apparent breaks
Criteria
No appearance error
No error in operation and display
Criteria
15 VDC〜30 VDC
24 VDC+10％/-5％
-11-
Countermeasure
Tighten the connector.
(Refer to "Mounting/ Installation")
Connect suitable terminating resistors
to cables (Refer to "Mounting
/Installation").
If any visible breaks are found, replace
the cable.
Countermeasure
If any visible breaks are found,
replace the cable.
If it does not operate as intended, or
the display indicates errors, replace
the unit.
Countermeasure
Investigate into the cause of voltage
fluctuation, and take a
countermeasure against it.
Investigate into the cause of voltage
fluctuation, and take a
countermeasure against it.
No.EX※※-OME0011-D