Best E5 Series User Manual page 183

E5 User Manual
Fault Fault
code Display
4 ov1
5 ov2
6 ov3
7 FAL
Fault
description
Load inertia is too big
Abnormal input voltage
Accel
Output short circuit
overvoltage
(phase-to-phase short
circuit or output ground
short circuit)
Load variation is too big
Abnormal input voltage
Output short circuit
Constant-s
(phase-to-phase short
peed
circuit or output ground
overvoltage
short circuit)
Improper parameter
setting of regulator under
SVC control
Load inertia is too big
Abnormal input voltage
Output short circuit
(phase-to-phase short
Decel
circuit or output ground
overvoltage
short circuit)
Improper parameter
setting of regulator under
SVC control
Decel time is too short
Output short circuit
(phase-to-phase short
circuit or output ground
short circuit)
Module
Fan damaged or air duct
protection
blocked
Direct connection of
inverter module
Switching power supply
- 179 -
Chapter 6 Trouble Shooting Easures
Causes Solutions
Use dynamic brake
Check power grid
voltage
Check motor
connection and output
ground impedance
Check the load
Check power grid
voltage
Check motor
connection and output
ground impedance
Properly set regulator
parameters
Use dynamic braking
Check power grid
voltage
Check motor
connection and output
ground impedance
Properly set regulator
parameters
Prolong the Decel time
Check motor
connection and output
ground impedance
Clear the air duct or
replace the fan
Seek services
Seek services