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Over Torque Signal
The inverter outputs the over torque signal when it detects that the estimated motor
output torque exceeds the specified level.
To enable this function, assign “07 (OTQ)” to an intelligent output terminal.
Option
Code
Terminal
Symbol
Function Name State Description
07
OTQ Over torque signal ON
when the estimated output torque > C055~C058
OFF when no over torque is detected
alid for inputs:
11, 12, AL0 – AL2 Example for terminal [11] (default output
configuration shown – see page 3-90):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see page 4-52 and 3-90):
See I/O specs on page 4-6
Required settings
A044=03 or 04, C055~C058
Notes:
• This function is effective only when the V/F
characteristic curve selection A044 is set to “03
(SLV mode)”. With any other V/F characteristic
curve selection, the output of the OTQ signal is
unpredictable.
• When using the inverter for a lift, use the OTQ
signal as the trigger to stop braking. Use the
frequency arrival signal as the trigger to start
braking.
• The example circuit for terminal [11] drives a relay
coil. Note the use of a diode to prevent the
negative-going turn-off spike generated by the coil
from damaging the inverter’s output transistor.
RY
Inverter output
terminal circuit
CM2 11
OTQ
AL1
Power
supply
Load
AL0 AL2
Inverter logic
circuit board
OTQ
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