Troubleshoot - WEG EA08A-WG Manual De Instalación Y Operación

7.

TROUBLESHOOT

SYMPTOM
Voltage not build up
Voltage Output too low
Fuse blown
Voltage Output too high
Unstable Voltage Output
8. WARRANTY
See the Installation and Maintenance of WEG alternator.
CAUSE
Residual voltage is too low. Below 5 Vac
Engine speed is too low
Fuse blown
F+, F– wires inverted.
Power input terminal poor contact
Incorrect wiring
Incorrect Sensing Input selection
Faulty External VR
connected
External potentiometer not well adjusted
Under frequency protection activated
Excessive excitation current
Incorrect wiring
Incorrect wiring
External potentiometer not well adjusted
Sensing Input terminal poor contact
Incorrect Sensing Input selection
STAB trimpot not well adjusted
DIP switch settings
alternator
Field resistance or excitation voltage too low
Under frequency protection activated
Engine speed unstable
Alternator not well insulated
Field flash your alternator with a battery
Refer to the Alternator Manual and set the
rated speed
Check the fuse
Check the F+, F– wires.
Check the wiring
Refer to Section 6 and check the wiring
Refer to Section 6 and check the wiring
or not properly
Check the external potentiometer and test it.
Turn the external potentiometer to the
middle or clockwise to the maximum
Refer to Section 4. UFRO trimpot
Refer to Section 5. Frequency DIP switch
Refer to the Alternator Manual
Refer to Section 6 and check the wiring
Refer to Section 6 and check the wiring
Turn the external potentiometer to the
middle
Check the wiring
Refer to Section 6 and check the wiring
Refer to Section 4. Adjust STAB trimpot
incompatible with
Refer to Section 5
Change the field impedance
Refer to Section 4. UFRO trimpot
Refer to Section 5. Frequency DIP switch
Refer to the Alternator Manual and set the
rated speed
Refer to the Alternator Manual
www.weg.net
CORRECTION
Automatic Voltage Regulator | 6