Delta Electronics Elevator Drive VFD-VL - Manual (Page 171)

Chapter 5 Troubleshooting|
5-4 Revision Nov. 2008, VLE1, SW V1.03
5.5 Over Heat (OH)
AC motor driv e overheats
Heat sink overheats
Check if temper atur e of heat si nk
is larger than 90
O C
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Reduc e load
No
Temperature detection mal functions.
Please contac t DELTA.
If cooling fan functions normally Change cooling fan
Check if cooling fan is jammed Remove obstruc tion
Check if sur roundi ng temper atur e
is withi n specific ation
Adjust surrounding temperature
to speci fic ati on
Maybe AC motor drive has malfunction or
misoperation due to noise. Pleas e contact
DELTA.
If load is too lar ge
5.6 Overload
EoL1/ot1 Ov erload
Reduc e load or inc rease the power of AC motor dri ve
Check if the setting of elec tr oni c
thermal r elay is s uitable
Yes
Yes
No
No
Modify s etting
If load is too lar ge
Maybe AC motor drive has malfunction
or misoperation due to noise.