SMC Networks ZK2-ZS L A Series Operation Manual page 75

Error
Problem
No.
•The display turns
OFF.
8
•Part of the
display is
missing.
The display
9
flashes.
Pressure display
difference when
10
using 2 or more
Pressure switches
The pressure
display accuracy
11
does not meet the
specifications.
Possible cause
Incorrect power Check if the power supply voltage is in
supply the range 24 VDC ±10%.
Check the power supply wiring.
Incorrect wiring
Check if the wiring is secure.
Power saving Check if power saving mode is
mode selected.
Product failure
Peak value/bottom
Check if peak value or bottom value
value display
display mode is selected.
mode is selected.
IO-Link (Operate
mode not Check the IO-Link communication.
established)
(1) Check the power supply wiring.
(2) Check if bending stress is being
Wiring failure
applied to a specific part of the
lead wire.
Dispersion within
Check if the dispersion is within the
the display
display accuracy range.
accuracy range
Product failure
Check if any foreign matter has
Foreign matter
entered the pressure port.
Air or liquid Check if air or liquid are leaking from
leakage the piping.
Check if the product satisfies the
Insufficient
specified accuracy 10 minutes after
warm-up time
supplying power.
Product failure
-74-
Investigation method Countermeasure
Supply power supply
voltage of 24 VDC ±10%.
Correct the wiring.
Reset the setting of
function.
Replace the product.
Turn off the peak
value/bottom value display
mode.
Change to Operate mode.
(1) Correct the wiring.
(2) Correct the wiring
(bending radius and
stress).
Use the fine adjustment
mode to adjust the display if
the dispersion is within the
display accuracy range.
Replace the product.
Install a 5 m filter to
prevent foreign matter from
getting into the pressure
port.
Also, clean the filter
regularly to prevent
drainage deposits.
Rework the piping.
If the tightening torque is
exceeded, the mounting
screws, brackets and the
pressure switch may be
damaged.
After energizing, the display
and output can drift
For precise pressure
detection, allow the product
to warm up for 10 to 15
minutes.
Replace the product.
Doc. No. DOC1051887