Maintenance, Overhaul, Repair
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207321 / 941160310190
2018-04-16·BA00·III·en·04
Zone 2 Ex i Field Device Coupler 8 Spurs
Series 9411/24
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10.3 Troubleshooting
Refer to the following troubleshooting plan for troubleshooting:
If the error cannot be eliminated using the mentioned procedures:
• Contact R. STAHL Schaltgeräte GmbH.
For fast processing, have the following information ready:
• Type and serial number of the device
• Purchase information
• Error description
• Intended use (in particular input / output wiring)
11
Maintenance, Overhaul, Repair
11.1 Maintenance
• Consult the relevant national regulations to determine the type and extent of
inspections.
• Adapt inspection intervals to the operating conditions.
Error
Cause of error
Troubleshooting
"PWR" LED is off
• No bus power supply at the
trunk
• Coupler defective
• Bus power supply too low
(min. 16 V)
• Check the bus power supply line and
connect correctly if necessary.
• Replace the coupler.
• Check the power supply on the
coupler.
"ERR" LED is on
Internal device fault
Replace the coupler.
"ERR" LED is on
LED "S1" to "S8"
flashing rapidly
The corresponding spur causes
an overload (total current
consumption of the connected
field devices > 160 mA during
rated operation)
Check the field device at the spur displayed
and replace the field device if necessary.
"ERR" LED is off
LED "S1" to "S8" is off
• Wire breakage at
corresponding spur
• Spur not connected
• Normal operation
(field device connected,
0 mA < I < 40 mA)
• Eliminate the causes of the error in the
spur displayed and check the lines and
field devices.
• Connect the field device to the
corresponding spur.
• No action required.
"ERR" LED is off
LED "S1" to "S8" is on
Field device connected to
corresponding spur,
3 mA
(
I
(
40 mA
No action required (normal operation).
"ERR" LED flashing,
LED "S1" to "S8"
flashing
• Short circuit at
corresponding spur
• 40 mA < I < 50 mA
Eliminate the short circuit on the spur
displayed and check the lines and the
field device.
DANGER
Explosion hazard due to opened enclosure cover while fieldbus is
active!
Non-compliance results in severe or fatal injuries.
• Deactivate the fieldbus before opening the enclosure cover.
Summary of Contents for 9411/24 Series
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