Chapter 12 Description of Parameter SettingsME300
12.1-12-1
12 Function Parameters You can set this parameter during operation.
In this parameter group, ASR stands for Adjust Speed Regulator.
Set Point Deviation Level
Default: 0
Settings 0–100%
Detection Time of Set Point Deviation Level
Default: 10
Settings 1–9999 sec.
When the deviation is less than Pr.12-00 (in the range of PID set point to Pr.12.00 x PID set point)
for a time exceeding the setting of Pr.12-01, the AC motor drive decelerates to stop to be
constant pressure status (this deceleration time is the setting for Pr.01-15). The system is ready
when the deviation is within the range of PID set point to Pr.12-00 x PID set point during
deceleration.
Example:
If the set point of constant pressure control of a pump is 4 kg, Pr.12-00 is set to 5%, and Pr.12-01
is set to 15 seconds, then the deviation is 0.2 kg (4 kg x 5%=0.2 kg). It means when the feedback
value is higher than 3.8 kg for a time exceeding 15 seconds, the AC motor drive decelerates to
stop (this deceleration time acts according to Pr.01-12). When the feedback value is less than 3.8
kg, the AC motor drive starts to run.
Offset Level of Liquid Leakage
Default: 0
Settings 0–50%
In the constant pressure status, when the liquid leakage is higher than Pr.12-02 x PID set point,
the AC motor drive starts to run.
It is used to prevent the drive from frequent run/stop operation due to liquid leakage.
Liquid Leakage Change Detection
Default: 0
Settings 0: Disable
0–100%
Time Setting for Liquid Leakage Change
Default: 0.5
Settings 0: Disable
0.1–10.0 sec.
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