TECO E510s Series - Page 327

5-8
LED display Description Cause Possible solutions
OL2
Inverter
overload
Inverter thermal
overload protection
tripped.
If an inverter overload
occurs 4 times in five
minutes, it is required to
wait 4 minutes before
resetting the fault.
 Voltage setting V/F mode too
high, resulting in
over-excitation of the motor.
 Inverter rating too small.
 Load too heavy.
 Check V/f curve.
 Replace inverter with larger
rating.
 Check and reduce motor
load, check and operation
duty cycle.
Comm. Error
No Modbus
communication
received in for the time
specified in 09-06
(communication error
detection time).
Active when 09-07(= 0
to 2).
 Connection lost or wire broken.
 Host stopped communicating.
 Check connection
 Check host computer /
software.
Retry (flash)
Automatic reset
activated, warning is
displayed until restart
delay time set (07-01)
expires.
 Parameter 07-01 set to a value
greater than 0.
 Parameter 07-02 set to a value
greater than 0.
 Warning disappears after
automatic reset.
ES (flash)
External
Emergency
Stop
External emergency stop
Enabled.
 03-00~03-05 set to 14, and the
digital input enabled.
 Turn off run command, and
remove external
emergency stop command.
bb1 (flash)
External
baseblock
External base block
(Terminal S1)
Multifunction digital input
external baseblock active.
 Multi-function input
function set incorrectly.
 Check wiring
bb2 (flash)
External
baseblock
External base block
(Terminal S2)
bb3 (flash)
External
baseblock
External base block
(Terminal S3)