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A signal is being input to the multifunction analog input terminal A2.
When “0” (frequency bias) is set for parameter H3-09 (Analog Input A2 Function Selection) a frequency cor-
responding to the terminal A2 input voltage (current) is added to the frequency reference. Check to be sure
that the set value and analog input value are suitable.
If Motor Deceleration is Slow
The deceleration time is long even when a braking option is connected.
The following causes are possible.
Stall prevention during deceleration enabled is set.
When a braking option is connected, set parameter L3-04 (Stall Prevention Selection during Deceleration) to 0
(disabled). When this parameter is set to 1 (enabled), the braking option will not work properly.
The deceleration time setting is too long.
Check the deceleration time setting (parameters C1-02 and C1-04).
Motor torque is insufficient.
If the parameters are correct and there is no overvoltage fault, maybe then the motor's power limit is reached.
Consider increasing the motor capacity.
If the Motor Overheats
The load is too heavy.
If the motor load is too heavy and the motor is used continuously with a torque that exceeds the motor's rated
torque, the motor will overheat. Reduce the load amount by lowering the load. Also consider increasing the
motor capacity.
The ambient temperature is too high.
The motor rating is determined within a particular ambient operating temperature range. The motor will burn
out if it is run continuously at the rated torque in an environment in which the maximum ambient operating
temperature is exceeded. Lower the motor's ambient temperature to be within its acceptable range.
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