Yaskawa Matrix Converter - Manual (Page 243)

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Motor Overload (OL1) Pre-Alarm (Setting: 1F)
• This output function is valid when the motor overload protection function is enabled (L1-01 =1).
• This output can be used to warn of overheating before the protection function itself operates.
MxC Overheat (OH) Pre-Alarm (Setting: 20)
• This output function indicates that the temperature of the cooling fins reaches the temperature set in L8-02
(Overheating Alarm Level).
Speed Reference Limit (Setting: 31)
Zero-Servo End (Setting: 33)
• This output function indicates that zero-servo position control has been completed.
• The output is turned on after the Zero-Servo Command is input and the difference between the zero-servo
operation starting position and the current position is within the Zero Servo Completion Width (b9-02).
off The motor protection function's electronic thermal value is less than 90% of the detection level.
on The motor protection function's electronic thermal value is greater than 90% of the detection level.
off The cooling fin temperature is less than the “OH Pre-Alarm Level” set in L8-02.
on The cooling fin temperature exceeds the “OH Pre-Alarm Level” set in L8-02.
off Any time this switch in not on.
on
Enables the speed reference limit in the following conditions (in Flux Vector Control):
1. Frequency reference ≥ Frequency Reference Upper Limit (d2-01)
Frequency reference ≤ Frequency Reference Lower Limit (d2-02)
Frequency reference ≥ Output frequency lower limit of the multi-function analog input
(Setting: 9)
2. The frequency reference is less than the Min. Output Frequency (E1-09), and b1-05 is set to 1,
2, or 3.
off The Zero-Servo Command isn’t being input or zero-servo position control hasn’t been completed.
on
The position has been brought within the Zero Servo Completion Width (b9-02) after the Zero-Servo
Command was input.