SMC Networks ISE35 Operation Manual page 30

Reference
Problem
No.
●An over
current error
(Er1) is
displayed.
●A system
error (Er4, 6,
7, 8) is
displayed.
●The display
6
shows
"HHH".
●The display
shows "LLL".
●A residual
pressure
error (Er3) is
displayed.
The values in
7 the display
fluctuate.
Possible cause Investigation method
1. Check if a current of 80 mA or more
is flowing to the output.
2. Check whether the connected load
is as specified, and confirm that
Over current to
there is no short circuit in the load.
the output
3. Check if a relay without a surge
(Er1)
voltage suppressor is connected.
4. Check if the wiring is in the same
route as (or bundled together with)
the high-voltage line or power line.
Improper
1. Confirm that there is no possibility
transaction of
of noise interference, such as static
the internal
electricity.
data of the
2. Confirm that the power supply
Pressure
voltage is in the range of 12 to 24
switch
VDC10%.
(Er4, 6, 7, 8)
1. Confirm that the pressure is not
Applied over the upper limit of the set
pressure over pressure range.
the upper limit 2. Check if moisture such as water
(HHH) droplets has entered the inside of
the piping.
1. Confirm that the pressure is not
Applied over the upper limit of the set
pressure under pressure range.
the lower limit 2. Confirm if the moisture such as
(LLL) water drop has entered the inside
of the piping.
The pressure is Check if the pressure difference is
not atmospheric more than ±10%F.S. from
pressure for zero atmospheric pressure (±0.11 MPa or
clear operation more) when the zero clear operation
(Er3) is performed.
Product failure
Incorrect Confirm that the power supply voltage is
within the range of 12 to 24 VDC 10%.
power supply
Check the wiring to the power supply.
Confirm that the brown and blue wires
Incorrect wiring are connected to DC(+) and DC(-)
respectively, and that the output line
has not come off (contact failure).
Factory
Check if the factory pressure has
pressure
changed.
change
-29-
Countermeasure
1. 2. Connect the load as
specified.
3. Change to a relay with a
surge voltage suppressor or
take measures to prevent
noise.
4. Separate the wiring from the
high voltage line and power
line.
1. Remove the noise source or
take measures to prevent
noise interference and turn off
the power supply. Then, turn
the power supply on again.
2. Supply an operating voltage
of 12 to 24 VDC10%.
1. Return the pressure to within
the set pressure range.
2. Take measures to prevent
moisture from entering the
piping.
1. Return the pressure within
the set pressure range.
2. Take the measure to prevent
the moisture from entering to
the piping.
Return the applied pressure to
atmospheric pressure and retry
the zero clear operation.
Replace the product.
Supply a power supply voltage
of 12 to 24 VDC 10%.
Correct the wiring.
If the fluctuation is worrisome,
consider that a change in the
response time correspondingly
increases the interval for
updating the display, and set
the response time longer.
No.PS※※-OMJ0004-E