8 FAULT DIAGNOSIS
8026362 / V1-0/2022-03|SICK
SUPPLEMENTARY OPERATING INSTRUCTIONS | VMS4100/5100
Subject to change without notice
8.2.2 Checking the incremental encoder
If the incremental encoder has been correctly connected via the X5 INPUT B terminal
block, LEDs 5 and 6 should flash when the conveyor belt is turning.
Fig. 98: Checking the incremental signals on the
Fault indication
LEDs are not flashing.
Fault cause Possible solution to the problem
There is no/insufficient contact
between the measuring wheel and
the conveyor belt.
Make sure that there is good contact between
the measuring wheel and the conveyor belt
on-site.
▸
If the measuring wheel shows signs of wear,
replace it.
Signal ground not activated.
Set the S2 signal ground switch to GND.
Wire is not correctly attached in
the terminal block.
Check that the wires are attached correctly.
Encoder is defective.
Replace the device.
Tab. 24: Checking the incremental signals on the
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