Chapter 13 Warning CodesC2000 Plus
ID No. Display on LCD Keypad Warning Name Description
128
HW NEG Limit (HnL)
When under FOCPG mode, the negative running limit
(hardware limit switch) of the MI terminals is activated.
Action and Reset
Action condition
When under IMFOCPG/PMFOCPG mode, the motor drive reaches negative
running limit.
Action time Immediately acts
Warning Setting Parameter N/A
Reset method Move the motor away from the limit position, the warning automatically clears.
Reset condition Immediately reset
Record N/A
Cause Corrective Actions
Error occurs on hardware limit
switch
1. Verify if the switch of hardware limit works properly.
2. Verify if the switch of hardware limit is installed at the right position.
3. Verify if the corresponding MI terminals of the positive limit switch is at the
right status such as Normal Open and Normal Close.
Overshoot
1. Verify if the acceleration/ deceleration time of the motor drive is right.
2. Verify if the frequency command of the motor drive is right
Select the wrong homing method Verify if the mechanical parts and homing method co-work properly.
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