Auto Tuning - JPS PDA Series Instruction Manual

4.3.4 Power (Torque) control (For PDAN/PDA)
Pr.67=4: Basically its operation characteristics is similar to Pr.67=1. Moreover, the user can pre-assign the POWER-
LIMIT curve. Whenever the inverter output power exceeds the pre-defined limit curve, the output frequency will
decrease automatically. In addition, by using AI2 (or AI3), it is easy to modify the POWER-LIMIT curve
proportionally.
Note: In this mode, Pr.73~Pr.77 is used to define POWER LIMIT CURVE
Watt
PL20
PL40
PL60
PL80
PL100
20%
The POWER LIMIT CURVE can be modified by AI2 or AI3, refer to section 8.75.
Pr.72 should set to 0, because AUTO RUN function is not allowed.
PL20 (Pr.73): the POWER LIMIT value when Hzout=20% * Upper limit (Pr.15)
PL40 (Pr.74): the POWER LIMIT value when Hzout=40% * Upper limit (Pr.15)
PL60 (Pr.75): the POWER LIMIT value when Hzout=60% * Upper limit (Pr.15)
PL80 (Pr.76): the POWER LIMIT value when Hzout=80% * Upper limit (Pr.15)
PL100 (Pr.77): the POWER LIMIT value when Hzout=100% * Upper limit (Pr.15)
All PL20~PL100 parameters are expressed as "W.n", which stands for
For example, if Pr.15=60Hz, PL20 (Pr.73)=15.2, it means the power limit at 12Hz(60Hz*20%) is:
= ·
2
PL 20 15 10
The actual output power: PDA series is calculated from
Refer to detail explanation of Pr.54 for monitoring the output current or power.

4.4 Auto Tuning

4.4.1 Auto Tuning for PDA series
For PDA series, the embedded Auto-Tuning program can search the internal characteristics of motor. For convenience
Both Dynamic Tuning and Static Tuning programs are installed.
Before start auto-tuning process, these parameters should be assigned first:
Pr.01: Main Acceleration rate
Pr.02: Main Deceleration rate
Pr.10: Base frequency (Hz) of the motor
Pr.11: Voltage (%) when the inverter output frequency reaches Base Frequency
Pr.12: Maximum Switching carrier
Pr.13: <=2.0 (KHz)
Pr.14: >=(Pr.10)÷2
Pr.15: Maximum frequency >= Pr.10
Pr.68: Sensor-Less Boost=0.0
Pr.88: Voltage (%) when the inverter output frequency reaches Upper Frequency
Pr.78: Current Rating (%) of the motor = (Motor Full Load current / Inverter Full Load current)*100%
4.4.1.1 PDA Dynamic Tuning
Set Pr.94=155, and reset the inverter, then the inverter will show "Auto" on the keypad, waiting to accept "FWD",
"REV" or "STOP" command.
If push "FWD"(or REV), the inverter will start tuning process and motor running in forward (or reverse) direction.
Wait about 2minutes, when the motor characteristics obtained, the inverter will stop the motor and then initialize
itself automatically.
If push "STOP" key while tuning is in progress, the inverter will stop the motor immediately and show "Er.tu".
40%
=
1500 Watt
PDAN series is calculated from
POWER LIMIT CURVE
Proportionally modified by AI2 or AI3
60% 80%
=
P ( watt ) Vcap
=
P ( watt )
11
Hz
100%*Pr.15
= ·
n
PL W 10
·
Idc
q
· · ·
3 Vout Iout cos