Delta VFD1A5MS43ANSAA User Manual

Chapter 12 Description of Parameter SettingsMS300
468
8. Adjust the setting of FOC speed observer and per-unit value of inertia (common problems)
 Pr.10-25: Set up FOC bandwidth of speed observer
Situation 1. Speed command changes rapidly, but speed response cannot follow.
(Speed response is too slow→Increase the setting value)
Situation 2. The noise of the observer is too large, and causes the operation diverged.
(Speed noise is too large→Decrease)
 Pr.11-01: Set up per unit of system inertia
Situation 1. The inrush current is too high at start-up, and causes an oc error.
Situation 2. An ocn error occurs during RUN or STOP, and the motor runs randomly.
a. Check Pr.11-01 whether the JM per-unit of system inertia is too large.
b. Decrease Pr.10-25 FOC bandwidth for speed observer or Pr.11-05 zero-speed
bandwidth.
 IMFOC Sensorless adjustment parameters
Refer to Section 12-1 Description of Parameter Settings for more details
Parameter
Description
Unit
Default
Settings
00-11
Speed control mode
0
0–7
01-01
Rated frequency (Hz)
Hz
60.00 / 50.00
0.00–599.00
01-02
Rated voltage (V
AC
)
V
Depending on
the model
power
Depending on
the model power
05-00
Motor parameter auto-tuning
0
0–13
05-02
Rated power for induction motor
1 (kW)
kW
Depending on
the model
power
0.00–655.35
05-03
Rated speed for induction motor 1
(rpm)
rpm
Depending on
the motor’s
number of
poles
0–xxxx
(Depending on
the motor’s
number of poles)
05-04
Number of poles for induction
motor 1 (poles)
4
2–20
05-05
No-load current for induction
motor 1 (A)
Depending on
the model
power
0.00–Pr.05-01
default
05-06
Stator resistance (Rs) for induction
motor 1 (Ω)
Ω
Depending on
the model
power
0.000–65.535
05-07
Rotor resistance (Rr) for induction
motor 1 (Ω)
Ω
0.000
0.000–65.535
05-08
Magnetizing inductance (Lm) for
induction motor 1 (mH)
mH
0.0
0.0–6553.5

Delta VFD1A5MS43ANSAA Specifications

General

Brand	Delta
Model	VFD1A5MS43ANSAA
Category	DC Drives
Language	English