SMC Networks ZSE20B - Page 71

-70-
No.PS※※-OMU0006-A
Problem
No.
Problem
Problem possible
causes
Investigation method
Countermeasures
7
An over current
error (Er1, Er2)
is displayed.
System error
(Er0, Er4, Er6,
Er7, Er8 or Er9)
is displayed.
Copy error
(Er13) is
displayed.
The display
shows "HHH".
The display
shows "LLL".
Residual
pressure error
(Er3) is
displayed.
Over current to
the output
(Er1 and 2)
(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, Er8, Er9)
(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.
Then, supply the power
again.
(2) Supply a correct voltage
of 12 to 24 VDC ±10%.
Copy function
has been
operated
incorrectly (Er13)
Refer to Trouble No.18.
Applied pressure
is above 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 to
within the set pressure
range.
(2) Take measures to
prevent foreign matter
from entering the piping.
Applied pressure
is below 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 to
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 ±7% F.S.
(±3.5%F.S. for compound pressure)
was not applied.
Return the applied pressure
to atmospheric pressure,
and retry the zero clear
operation.
Product failure
Replace the product.