Incremental Encoder FG 2
20
FG2_MANUAL-en_R8(2016-08-11)ID70199.doc
8
Faults
8.1
Faults table
Faults
Possible cause
Remedy
Switch does not close
(only by option S)
No supply voltage
Control: LED in the terminal box
does not shine
Check connection cable and
supply voltage
Error LED does not shine:
Rotation speed above the
switching speed
Adjust the suitable rotation speed
Error LED is shining:
Evaluation of rotation speed is
faulty.
Disconnect power supply and
switch on again
Moisture in the terminal box
Soiled terminal box gasket or
seal surfaces
Clean terminal box gasket and
seal surfaces
Damaged terminal box gasket
Replace terminal box gasket
Cable gland/blanking plug not
tightened
Tighten cable gland/blanking
plug
Unsuitable cable for cable gland
Use suitable cable and cable
glands
No output signals
Supply voltage not connected
Connect supply voltage
Connection cable reversed
Wire correctly
Output signals subject to
interference
Unsuitable cable
Use data cable with conductors
arranged as twisted pairs and
common shield
Cable shield not connected
Connect cable shield at both
ends
Cable routing not EMC compliant
Observe applicable EMC
guidelines when routing cables
Signal interruptions
Signal end stage overloaded
Check pin assignment; observe
connection diagram
Do not assign unused outputs
Outputs short-circuited
Do not connect outputs with
supply voltage or GND
Contact Hubner-Service (page 2) if none of the remedies listed above provides a solution!
