Inovance MD500-PLUS Series - Setting the Frequency Reference Limits; Soperation at Frequencies Lower than the Lower Limit

Function Application
‑523‑
3.1.2.11 Setting the Frequency Reference Limits
Frequency upper limit is used to control the maximum frequency if the motor is not
allowed to run at a frequency above a specific value.
Frequency lower limit is used to control the minimum frequency if the motor is not
allowed to run at a frequency below a specific value.
Maximum frequency is used to control the Max. output frequency.
Source of frequency reference upper limit is used to select the source of the
frequency upper limit.
Frequency upper limit offset is used to set the offset of the frequency upper limit. This
parameter takes effect only when the source of the frequency upper limit is AI.
Para. No. Function Default
Value Range
F0‑10
Max. frequency
50.00 Hz 50.00 Hz to 600.00 Hz
F0‑11
Source of frequency
upper limit
0
0: F0‑12 (Frequency upper limit)
1: AI1
2: AI2
3: AI3
4: Pulse reference (DI5)
5: Communication
6: Multi‑reference
F0‑12
Frequency upper limit
50.00 Hz
Frequency lower limit (F0‑14) to max. frequency
(F0‑10)
F0‑13
Frequency upper limit
offset
0.00 Hz
0.00 Hz to max. frequency (F0‑10)
F0‑14
Frequency lower limit
0.00 Hz
0.00 Hz to frequency upper limit (F0‑12)
3.1.2.12 SOperation at Frequencies lower Than the Lower Limit
Frequency lower limit indicates the minimum frequency at which the motor is
allowed to run.
If the frequency of the AC drive is set to a value below the frequency lower limit (F0‑
14), set F8‑14 to select the action of the AC drive. Four actions are supported: run at
frequency lower limit, stop, run at zero speed, and coast to stop.
● 0: Frequency lower limit
If the running frequency is below the frequency lower limit, the AC drive runs at
the frequency lower limit.
● 1: Stop
If the running frequency is below the frequency lower limit, the AC drive stops.
● 2: Run at zero speed
If the running frequency is below the frequency lower limit, the AC drive runs at
zero speed.