TECO A510-2001-H - Page 277

5-3
LED
display
Description Possible causes Corrective action
then the inverter enables the
base block (08-18 = 0).
CLB
Current
Protection
Level B
Warning of inverter over
current:
Inverter current reaches the
current protection level B
Inverter current is too big.
Motor load is too big.
Check the load and the
operation cycle time.
OS
over speed
Motor over speed :
. Motor speed is over than
20-20 (PG Over speed
Level) and exceeds set time
of 20-21 (PG over speed
time).
. Subject to 20-19 (= 0 or 1),
the inverter will be stopped.
.This fault detection is valid
only in in V / F + PG and SV
control mode (00-00 = 1 or 3
or 4).
. Motor speed can be
monitored by 12-22
. Speed reference is too high.
.
Excessive occurrence reflects
insufficiency in the speed or the
degree,
. Check the speed reference
gain and the settings of 20-20，
20-21are appreciate or not.
. Adjust the parameters of the
set ASR in group 21.
PGO
PG open
circuit
PG open circuit detection:
.When the inverter is
operating, the PG pulse is
not detected within the PG
open circuit detection
time(20-26).
.Subject to 20-25(= 0 or 1)，the
inverter will be stopped.
.This fault detection is valid
only in V / F + PG and SV
control mode (00-00 = 1 or 3
or 4).
. PG connection is incorrect.
. PG has no power.
. PG wire is broken.
. Braking mechanism is enabled.
. Check PG wiring.
. Check PG power
. Check PG wiring
. Check the motor action
mechanism
DEV
speed
deviation
speed deviation :
.Motor speed deviation is over
than the setting of 20-23 (PG
speed deviation level) and
exceeds 20-24 (PG deviation
time).
.Subject to 20-22(=0 or 1)，
the inverter will be stopped.
.This fault detection function is
valid only in V / F +PG and
SV control mode（00-00 = 1
or 3 or 4）.
.The load is too big.
.The load has been locked. (for
example, the braking mechanism is
enabled.).
.PG wiring error.
.PG the parameter setting（group 20）
is incorrect. Acceleration/deceleration
time is too short.
.Check mechanical load .
.Check the braking mechanism
is enabled or not, or reduce
the load.
.Check PG connection.
.Verify the the parameter
settings of 20-23 and 20-24 are
correct or not.
.Prolong
acceleration/deceleration time.
CE
communicatio
n error
Modbus communication error :
No communication is
received in time of 09-06
(communication error
detection time)
.Subject to 09-07(= 0 to 2)，this
fault protection is enabled..
.Connection is broken off or the host
has stopped communication.
Check all connections and
verify all software architecture
at the client side.
FB
PID
feedback
loss
PID feedback loss:
In PID feedback loss detection
(10-11 = 2, Motor is coast to
stop), PID feedback inputs
<PID feedback loss detection
level (10-12) and the PID
feedback loss detection time is
exceeded（10-13）.
PID feedback sensor can not act
properly or it is not install correctly.
.Check PID feedback method
setting is correct or not.
.Ensure the correct installation
and the proper operation of
PID feedback signal.
STO
Safety
switch
Safety switch of the inverter
F1 and F2 on the inverter control
circuit board are open circuit.
.Check F1 and F2 on the
inverter control circuit board are
open circuit or not.