SMC Networks D-MP Series User Manual

-25-
No.D-※S-OMU0002-A
•Cross-reference for troubleshooting
Trouble
No.
Problem
Possible cause
Investigation method
Countermeasures
1
•The Auto switch
output does not
turn off
The operation
LED does not
turn off
•The Auto switch
output does not
turn off
The operation
LED does not
turn on
•The switch
output does not
turn on
The operation
LED does not
turn off
Incorrect setting
Setting mode
(hysteresis, switch output
mode, normal output/reversed
output)
Reset the functions
Improper setting
(mounting)
position
The presence of the following
conditions
Operation range of the position
sensor
>Actuator operating range
Reset the position sensor,
change the mounting
position.
Position sensor
failure
Replace the product.
2
The output does
not turn off
The operation
LED operates
correctly
Incorrect load
specification
Check if the load specification
satisfies the following formula.
Input unit OFF current
>Switch leakage current
Reset the PLC
Incorrect wiring
Check the output wiring.
Correct wiring
Position sensor
failure
Replace the product.
3
The output does
not turn on
The operation
LED does not
turn on
Power supply
failure
Check the power supply voltage
(Zero or extremely low)
Adjust the power supply
voltage to the specified value
Incorrect wiring
Check the wiring
Correct the wiring
Incorrect setting
Setting mode
(hysteresis, switch output
mode, normal output/reversed
output)
Reset the functions
Displacement from
the set position
Correct the
position to the
optimum position.
Check for looseness of the
sensor mounting bracket and
the mounting screws.
Apply the correct tightening
torque
(Tightening torque: 0.05 to
0.15 Nm)
Displacement of
the piston
stopping position
Check for variation in the
actuator stopping position.
Stabilize the stop position
(Correct the misalignment
and cushioning).
Breakage of lead
wire
Check the repeated bending
stress/tension applied to a part
of the lead wire.
Correct the wiring
(Correct the tensile force and
enlarge the bending radius).
Position sensor
failure
Replace the product.

SMC Networks D-MP Series Specifications

General

Brand	SMC Networks
Model	D-MP Series
Category	Accessories
Language	English