SSD 605C - Manual Tuning; Tuning Using the Motor Equivalent Circuit; Tuning Using a Simple Tuning Sequence

Operating the Inverter 4-7
605C Frequency Inverter
Manual Tuning
Tuning using the Motor Equivalent Circuit
V
I
I
I
RL
L
L
R
S
1
mm
2s
sr
s
r
Figure 4-5 The Motor Equivalent Circuit
From the motor equivalent circuit, the values programmed into the Inverter are:
STATOR RES
=
R
s
Ohms
LEAKAGE INDUC
()
(
)
()
=+ −
+
LL
L
LL
m
m
m
1
2
2
mH
MUTUAL INDUC
(
)
()
=
+
L
LL
m
m
2
2
mH
Tuning using a Simple Tuning Sequence
If the motor equivalent circuit is not available, the following simple
tuning sequence can be used. All QUICK SETUP parameters must be
correctly set, including FULL LOAD CALIB and NO LOAD CALIB:
• Set FULL LOAD CALIB to the rms current given on the motor
nameplate
• Set NO LOAD CALIB to the Inverter’s rms line current value while running the
motor at base frequency (V/F) under no-load conditions.
Now set the following parameters in this order to complete the manual
tuning process.
NAMEPLATE RPM Enter the motor nameplate rated speed
MOTOR POLES Enter the number of motor poles
SUPPLY VOLTAGE Enter the Inverter rms line-to-line volts
MOTOR CONNECTION Enter the motor 3-phase connection type
VECTOR ENABLE Set to TRUE.
STATOR RES Set STATOR RES to zero. Run motor at zero speed (unloaded).
Note the BOOST parameter value (see PATTERN GEN).
Calculate STATOR RES as follows and enter the result:
STATOR RES =
BOOST
3 x NO LOAD CALIB
STAR CONNECTION
STATOR RES =
NO LOAD CALIB
DELTA CONNECTION
3 x BOOST
LEAKAGE INDUC Set to zero and run motor at base-frequency un-loaded
MUTUAL INDUC Alter until FIELD diagnostic reads approximately 100%.
1. Take the manually tuned value for MUTUAL INDUC, and
split it into 20% and 80% portions.
2. Enter the 20% portion into LEAKAGE INDUC parameter
3. Enter the 80% portion into MUTUAL INDUC parameter.
IMPORTANT: Remember to save the parameter settings.
MMI Menu Map
1
SETUP PARAMETERS
2
QUICK SETUP
MMI Menu Map
1
SETUP PARAMETERS
2
VECTOR SETUP