TECO-Westinghouse F510 Series, Instruction Manual

Page: 406 / 444

10-8
LED display Description Cause Possible solutions
OH2
(flash)
Inverter over
heating warning
Inverter overheat warning:
Multi-function digital input set
to 32. (Terminal S1 ~ S6)
Active when 03-00 ~ 03-05
=31).

Multifunction digital input
overheat warning active.

Multi-function input
function set incorrectly.

Check wiring
OT
(flash)
over torque
detection
Inverter output torque is
higher than 08-15 (over
torque detection level) for the
time specified in 08-16.
Parameter 08-14 = 0 to
activate.

Load too heavy.

Check over torque
detection parameters
(08-15 / 08-16).

Check and reduce motor
load, check and operation
duty cycle.
UT
(flash)
under torque
detection
Inverter output torque is lower
than 08-19 (under torque
detection level) for the time
specified in 08-20. Parameter
08-18 = 0 to activate.

Sudden drop in load.

Belt break.

Check under torque
detection parameters
(08-19 / 08-20).

Check load / application.
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)
bb4
(flash)
External
baseblock
External base block
(Terminal S4)
bb5
(flash)
External
baseblock
External base block
(Terminal S5)