SMC Networks D-M9 J Series Operation Manual page 16

Trouble
Trouble
No.
The Auto switch
output does not
turn on.
4
The operation
LED does not
light up.
The Auto switch
output does not
turn on.
5
The operation
LED operates
properly.
Investigation to find possible
Possible cause
Power supply Power supply voltage
failure (zero or extremely low)
Voltage (load) applied to the Auto
Incorrect wiring
switch
Improper setting
Detection close to the limit of
(mounting)
Auto switch operating angle
position
Looseness of the Auto switch
Displacement
unit or Auto switch mounting
from set position
screw
Displacement of
Deviation of the actuator
the actuator
stopping angle (position)
stopping angle
The presence of magnetic filed
source near the actuator (electric
welding machine conductor and
strong magnet, etc.)
Lowering of
magnetic force
The effect of magnetic field
for detection
generated by adjacent actuator
(demagnetization)
(placed within 20mm)
The presence of deposit of
magnetic material (cutting chip)
on the actuator
The presence of repeated
bending stress to a part of lead
Breakage of
wire
lead wire
(bending radius, tensile force to
the lead wire)
Condition of connected part
Incorrect wiring (connector contact pin and
crimping terminal)
-15-
cause
Adjust power supply voltage to a
given value.
(Refer to page
voltage or Load voltage" in
Specifications.)
Correct wiring.
(Refer to page
circuit".)
Move the Auto switch to proper
position (near the center of the
Auto switch operating angle).
Fix to proper position at the
appropriate torque.
Stabilize stop position.
Place a magnetic shield plate
between magnetic filed source
and the actuator.
Separate the actuator (by 40mm
or more). Place a magnetic
shield plate.
Remove the magnetic deposit.
Correct wiring.
(Adjust tensile force and enlarge
bending radius.)
Correct wiring. (Perform wiring of
connected part again.)
Countermeasure
"Power supply
17
"Internal
11
No.D-※S-OMS0002-B