136
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The output electrical wire was
grounded or short circuited.
Check the output wiring.
Chapter 2, 2.1 How
to Connect VF66B
(DC motor drive)
2. The deceleration time is too
short.
Make the deceleration
time longer.
Use the regeneration
stall prevention
function usage
selection (E-00).
Connect the dynamic
braking (DB) optional
unit [VFDB2009].
Chapter 3, 3.3.2
How to Change the
Acceleration/Deceler
ation Time
Chapter 6, 6.6
Area E
Chapter 7, 7.6
Area E
Optional Instruction
Manual
3. The setting of the built-in DB
(dynamic braking) operation
level (F-00) is not correct.
Adjust the setting of the
built-in DB (dynamic
braking) operation level
(F-00).
Chapter 6, 6.7
Area F
Chapter 7, 7.7
Area F
[Contents]
It starts when the
overvoltage of the input
direct-current voltage of
the unit is protected.
・
Protection starts when
the direct-current
voltage is (200 V
class) approximately
400 V (400 V class)
approximately 800 V
4. The dynamic braking (DB)
optional unit [VFDB2009] is
not operating.
Replace the dynamic
braking (DB) optional unit
[VFDB2009].
Optional Instruction
Manual
5. The inertia of the load is large.
Use the sine wave
converter or the dynamic
braking (DB) optional unit
[VFDB2009].
Optional Instruction
Manual
6. Input power supply voltage
abnormally rises.
Check input power
supply voltage.
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The setting values of the
forward direction maximum
voltage (E-11) and the reverse
direction maximum voltage
(E-12) are not correct.
Review the setting values
of the forward direction
maximum voltage (E-11)
and the reverse direction
maximum voltage (E-12).
Chapter 6, 6.6
Area E
Chapter 7, 7.6
Area E
[Contents]
It starts when the
armature voltage
command of VF66B (DC
motor drive) exceeds the
forward direction
maximum voltage (E-11)
or the reverse direction
maximum voltage (E-12)
for the duration of 500
ms continuously.
