10 Troubleshooting; 10.1 Proceed As Follows For Troubleshooting; 10.2 Table Of Malfunctions - Aventics 2AI2M12-E Description Du Système Et Notice D'emploi

AVENTICS | AES I/O Modules, Analog | R412018147–BAL–001–AG

10 Troubleshooting

10.1 Proceed as follows for troubleshooting

Even if you are in a rush, proceed systematically and in a targeted manner.
In the worst case, arbitrary, indiscriminate disassembly and modifications to the settings may
mean that you are no longer able to determine the original cause of the error.
Get an overview of the function of the product as related to the overall system.
Try to clarify whether the product fulfilled the required function in the overall system before the
error occurred.
Try to detect all changes to the overall system in which the product is installed:
– Have the conditions or application for the product changed?
– Have changes (e.g. conversions) or repairs been made to the overall system (machine/system,
electrical, controller) or the product? If yes, which ones?
– Has the product or machine been operated as intended?
– What kind of malfunction has occurred?
Try to get a clear picture of the cause of the error. If necessary, ask the immediate machine
operator or foreman.

10.2 Table of malfunctions

Table 75 contains an overview of malfunctions, possible causes, and remedies.
If you cannot remedy a malfunction, please contact AVENTICS GmbH. The address is printed on
the back cover of these instructions.
.
Table 75: Table of malfunctions
Malfunction Possible cause
No signal at the inputs No or insufficient voltage at the bus
or outputs coupler
(also see individual LED indications in
the bus coupler system descriptions)
No signal at the outputs No set point stipulated
No signal at the inputs Sensor signal not present
UL LED is off.
The sensor supply voltage UL is less
than the lower tolerance limit (18 V DC)
UA LED is off.
The actuator supply voltage UA is less
than the lower tolerance limit
(21.6 V DC)
UX LED is off (I/O
The external UX power supply is not
module with external present.
supply).
DIAG LED illuminated
Short circuit in sensor supply of an
red on input module input
Total current of all sensor supplies
exceeds 0.5 A.
Troubleshooting
Remedy
Connect power supply at plug X1S on the
bus coupler.
Check polarity on the bus coupler (see
bus coupler system description).
Switch on system component.
Supply the bus coupler with correct
(sufficient) voltage.
Stipulate a set point.
Check sensor.
Check the power supply UL at plug X1S
on the bus coupler.
Check the power supply UA at plug X1S
on the bus coupler.
Check the power supply UX at plug X1S
on the I/O module.
Exchange connection cable or sensor.
Reduce the number of connected
sensors.
Use an additional input module.
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