Possible Causes Of Diagnostic Messages - Beckhoff EK1914 Operating Manual

9.3

Possible causes of diagnostic messages

Diagnosis
Diag 2 LED 800E:0E /
800E:0F set to: 5.6 or
greater than 100
Diag 2 LED 800E:0E /
800E:0F set to: 11
Diag 2 LED 800E:0E /
800E:0F set to: 10
EK1914
Possible cause
If parameter Testing of outputs active is switched on:
Faulty test pulses.
Cause: external supply or cross-circuit.
Faulty test pulses. Cause: parallel routed cables with
high capacitive coupling and dynamized signals,
possibly also in common cables
Cause: current exceeds the limit of 500 mA.
Irrespective of whether the parameter Testing of outputs active is switched on:
The output voltage lies below the permissible voltage
range (24 V -15%/+20%). A possible cause is a
short-circuit at the output or e.g. a voltage drop at the
instant of switching.
EMC faults
Internal defect
Voltage on the power contacts too low.
EMC faults
Internal defect
Field potential too high. Voltage on the power
contacts too high.
Field potential too high. Voltage on the power
contacts too high.
EMC faults
Internal defect
Version: 2.0.0
Diagnosis
Remedial actions
Eliminate cross-circuit or
external supply.
Isolate lines and lay in
separate non-metallic
sheathed cable. Create a
distance between the non-
metallic sheathed cables.
Select actuator accordingly.
Current < 500 mA
Eliminate short-circuit.
Design power supply
accordingly. Check supply
lines for voltage drop.
Take suitable EMC
measures
Exchange Bus Coupler
Increase Bus Coupler supply
voltage and reset error
display by power-on reset of
the Bus Coupler
Take suitable EMC
measures
Exchange Bus Coupler
Decrease Bus Coupler
supply voltage and reset
error display by power-on
reset of the Bus Coupler
Use an R/C or diode-based
protective circuit on the
actuators
Take suitable EMC
measures
Exchange Bus Coupler
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