Oriental motor BLVD20KM - Page 65

Protective functions
−65−
Number
of ALARM
LED
blinks
Alarm type Cause Remedial action
Reset using
the ALARM-
RESET input
6 Overspeed
The rotation speed of the motor output shaft
exceeded the value below.
BLV510
: Approximately 3600 r/min
BLV620
,
BLV640
: Approximately 4800 r/min
•
Decrease the load.
•
Reconsider the operating conditions such
as acceleration/deceleration time.
Possible
7 Overcurrent
Excessive current was own through the
driver due to ground fault, etc.
Check that no damage is given to the wiring
between the driver and motor, and turn on
the power again.
Not
possible
8 EEPROM error
•
Stored data was damaged.
•
Data became no longer writable or
readable.
Initialize the parameters using the
MEXE02
,
OPX-2A
, or communication, and then turn
on the power supply again.
9
Main circuit
overheat
The temperature inside the driver exceeded
the main circuit overheat level.
Reconsider the ventilation condition in the
enclosure.
Possible
10 External stop
*1
The EXT-ERROR input was turned OFF. Check the EXT-ERROR input.
11
Prevention of
operation at
power-on
*2
The main power supply was turned on when
the FWD input or REV input was being ON.
※
When the "3-wire mode" is set with
the "Operation input mode selection"
parameter, the main power supply was
turned on again in a state where the
START/STOP input and the RUN/BRAKE
input were being ON.
Turn the FWD input and REV input OFF, and
then turn on the main power supply again.
※
When the "3-wire mode" was set with
the "Operation input mode selection"
parameter, turn either the START/STOP
input or the RUN/BRAKE input OFF before
turning on the main power supply again.
12
Communication
switch setting
error
The communication function switch (SW2-
No.4) was turned ON.
Turn the communication function switch
(SW2-No.4) OFF, and turn on the power
again. When using RS-485 communication
function, refer to the USER MANUAL (RS-485
Communication Mode).
Not
possible
14
Main circuit
output error
*3
•
The motor power line was disconnected or
the motor power connector came o.
•
When the operation input signal was
switched instantaneously, the motor could
not follow and continued a state of not
rotating.
•
Check the connection between the driver
and motor.
•
Check the motor has rotated before
switching the operation command.
Possible
*1∗
Only when EXT-ERROR is assigned using
MEXE02
,
OPX-2A
, or communication.
*2∗
When "Prevention of operation at power-on" function is enabled using
MEXE02
,
OPX-2A
, or communication.
*3∗
This alarm is not generated when the torque limiting value is set to less than 200%.
Note
Turn o and on the power supply again to reset alarms of the overcurrent and EEPROM error, and communication
switch setting error. If the product does not operate properly after the power is turned on again, the internal circuit
may be damaged. Contact your nearest Oriental Motor sales oce.