SMC Networks ISE80 - Page 47

-46-
No.PS※※-OMM0003-J
Fault No.
Fault
Possible cause
Investigation method
Countermeasure
6
Analogue output
is not provided.
(specified
accuracy is not
satisfied.)
Incorrect wiring
Check that the analogue output is
connected to a load.
Correct the wiring.
Non-compliance
with the load
specification
(1) Check that the correct load is
connected.
(2) Check that the impedance of the
input equipment (A/D
transformer) is suitable.
Connect a suitable load.
Insufficient
warm-up time
Check if the product satisfies the
specified accuracy after 10 minutes
warm up time.
After energizing, the display
and output can drift. For
detecting fine pressures, warm
up the product for 10 to 15
minutes.
Product failure
Replace the product.
7
•An over current
error (Er1, Er2) is
displayed.
•System error
(Er0, Er4, Er6 or
Er7) is displayed.
•The display
shows "HHH".
•The display
shows "LLL".
•Residual
pressure error
(Er3) is
displayed.
Over current to the
output
(Er1, Er2)
(1) Check that the switch output load
current is not more than 80 mA.
(2) Check that the connected load
satisfies the specifications, and
check the load for short circuits.
(3) Check that any relay is
connected with a surge voltage
suppressor.
(4) Check if the wiring is not in the
same route as (or bundled
together with) a high voltage
cable or power cable.
(1)，(2) Connect the load as
specified.
(3) Use a relay with a surge
voltage suppressor or
take measures to prevent
noise.
(4) Separate the wiring route
from any high voltage
cable or power cable.
Incorrect operation
of the internal data
of the Pressure
switch
(Er0, Er4, Er6,Er7)
(1) Check that there is no noise
interference such as static
electricity, and check for noise
sources.
(2) Check that the power supply
voltage is within the range 12 to
24 VDC ±10%.
(1) Remove the noise and the
noise source (or take
measures to prevent noise
interference), and reset the
product, or turn off the
power supply and turn it on
again.
(2)
Supply a correct voltage of
12 to 24 VDC ±10%.
Applied pressure is
over the upper limit
(HHH).
(1) Check that the pressure is not
above the upper limit of the set
pressure range.
(2) Check that foreign matter has
not entered the piping.
(1) Adjust the pressure within
the set pressure range.
(2) Take measures to prevent
foreign matter from
entering the piping.
Applied pressure is
under the lower
limit (LLL).
(1) Check that the pressure is not
below the lower limit of the set
pressure range.
(2) Check that foreign matter has
not entered the piping.
(1) Adjust the pressure within
the set pressure range.
(2) Take measures to prevent
foreign matter from
entering the piping.
Pressure is not
atmospheric
pressure at
zero-clear
operation (Er3)
Check that during the zero clear
operation, pressure above
±10%F.S. (from atmospheric
pressure to the upper limit of rated
pressure) of atmospheric pressure
was not applied.
Return the applied pressure
to atmospheric pressure, and
retry the zero clear operation.
Product failure
Replace the product.