SMC Networks EX600-SPR Series Operation Manual page 47

Fault
LED status
no.
When all LEDs are OFF fault is,
power for control/input is OFF.
When ST(M) LED is red fault is,
component failure inside SI unit.
When ST(M) LED is flashing red
fault is either,
(Diagnostics
active)
When ST(M) LED is flashing
red/green fault is,
communication error between SI
and I/O units.
When PWR LED is red fault is,
abnormal power voltage for
(Diagnostics control/input.
active)
When PWR(V) LED is red fault
is, abnormal power voltage for
(Diagnostics output.
4
active)
When SF is OFF and BF is
flashing red fault is, discrepancy
between DP master setting and
device configuration data.
When SF is OFF and BF is red
fault is, any one of the following:
When SF LED is red fault is,
communication established
between DP master and SI unit,
(Diagnostics
but with diagnostic error.
active)
When SF is red and BF is
flashing red fault is, discrepancy
between DP master setting and
device configuration data.
When SF is red and BF is red
fault is, SI unit address set to "0"
or above "126".
Fault
Valve is in short circuit or open
circuit i.e. valve is broken.
Valve ON/OFF counter has
exceeded the set value.
No connection between DP
master and SI unit.
SI unit cannot recognize the
communication speed.
DP master failure or SI unit
failure.
Check
Check if power supply for
control/input is connected.
–
Check cause by PLC or HT
For details refer to system
diagnostics data.
Check for a loose connection
between units.
Check the power supply.
Check the power supply.
Check if SI unit address is
consistent with address at DP
master.
Check if communication
speed and wiring length are
compatible.
Check if terminating
resistance is connected
appropriately at both ends of
network.
Check if communication wiring
is close to any noise source.
Check each units LED display
for fault.
Check if PLC configuration
settings are consistent with the
DP master.
Check the address setting.
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Action
Re-connect power supply for
control/input
Stop using the product and
contact SMC.
Replace valve if broken and
confirm operation.
Reset counter value, change
set value or disable the
diagnostics through parameter
setting.
Confirm all equipment and
cables are connected correctly.
If the error does not recover;
stop using the product and
contact SMC.
Adjust or replace power supply.
Adjust or replace power supply.
Set the correct address.
Correct all faults; ensure
conformity to the PROFIBUS
specification.
Ensure a separate wire for the
communication line and the
noise source.
Correct fault according to the unit
LED display.
Set the correct configuration
settings.
Correct the address setting.
No.EX##-OML0005