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6 Vector Control and Applied Functions
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
6-8
PM Motor Mode
6
6-
8-6 Adjustment of PM Motor
Mode Settings
Precautions for Correct Use
• Increasing the PM Motor Starting Current (H117) too much causes an overload. Alternatively,
doing so causes automatic carrier reduction depending on the set value.
• Decreasing the PM Motor Stabilization Parameter (H119) too much may cause an insufficient
torque, shock or overcurrent trip around the value set in PM Motor Minimum Frequency
(H121).
PM Motor Mini-
mum Frequency
(H121) or lower
Rotation is unsta-
ble.
If the motor rotation is unstable during startup, increase the
motor starting time.
However, setting this parameter to an excessively large
value may cause an overload. Check the value in the Elec-
tronic Thermal Load Rate Monitor (d104).
H117
Motor is hunting or
vibrating.
Finely adjust the motor parameters for PM motor control.
Decrease the PM Motor Parameter R value gradually,
down to 70% of the set value.
H106,
H111
Increase the PM Motor Parameter Ld value gradually, up to
130% of the set value.
Increase the PM Motor Parameter Lq value gradually, up to
130% of the set value.
* Be sure to adjust this parameter so that Ld is equal to or
less than Lq.
H107,
H112
H108,
H113
Decrease the PM Motor Stabilization Parameter value.
H119
Around PM Motor
Minimum Fre-
quency (H121)
A shock or overcur-
rent trip occurs.
Increase the PM Motor Speed Response value.
H116
Decrease the minimum frequency of the PM motor.
H121
PM Motor Mini-
mum Frequency
(H121) or higher
Motor is hunting or
vibrating.
Decrease the PM Motor Speed Response value.
H116
Increase the PM Motor No-Load Current value.
H122
Increase the Carrier Frequency, if too low.
b083
Finely adjust the motor parameters for PM motor control.
Decrease the PM Motor Parameter R value gradually,
down to 70% of the set value.
H106,
H111
Increase the PM Motor Parameter Ld value gradually, up to
130% of the set value.
Increase the PM Motor Parameter Lq value gradually, up to
130% of the set value.
* Be sure to adjust this parameter so that Ld is equal to or
less than Lq.
H107,
H112
H108,
H113
Decrease the PM Motor Stabilization Parameter value.
H119
Operation status
Phenomenon
Adjustment method
Adjust-
ment item
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...