II
3.1.1 Leakage currents and countermeasures ...................................................................................... 34
3.1.2 EMC measures............................................................................................................................. 36
3.1.3 Power supply harmonics............................................................................................................... 38
3.1.4 Harmonic suppression guideline in Japan....................................................................................39
3.2 Installation of power factor improving reactor................................ 41
3.3 Power-OFF and magnetic contactor (MC) ........................................ 42
3.4 Precautions for use of the drive unit................................................ 43
3.5 Failsafe of the system which uses the drive unit ............................ 45
4 PARAMETERS 47
4.1 Operation panel................................................................................. 48
4.1.1 Names and functions of the operation panel ................................................................................ 48
4.1.2 Basic operation (factory setting) ................................................................................................... 49
4.1.3 Easy operation mode setting (easy setting mode)........................................................................ 50
4.1.4 Changing the parameter setting value.......................................................................................... 51
4.1.5 Displaying the set speed............................................................................................................... 51
4.2 Parameter list ................................................................................... 52
4.2.1 parameter list................................................................................................................................ 52
4.3 Test operation and gain adjustment of the PM sensorless vector con-
trol .................................................................................................... 69
4.3.1 Outline of the PM sensorless vector control ................................................................................ 69
4.3.2 PM motor test operation (Pr. 800) ............................................................................................... 69
4.3.3 Adjusting the speed control gain (Pr. 820, Pr. 821) ..................................................................... 71
4.4 Adjustment of the output torque (current) of the motor................. 74
4.4.1 Stall prevention operation (Pr. 22, Pr. 48, Pr. 156, Pr. 157) ........................................................ 74
4.4.2 Start torque adjustment (Pr. 785) ................................................................................................ 77
4.5 Limiting the rotation speed ............................................................. 78
4.5.1 Maximum/minimum setting (Pr. 1, Pr. 2) ..................................................................................... 78
4.5.2 Avoiding mechanical resonance points (speed jumps) (Pr. 31 to Pr. 36) .................................... 79
4.6 Speed setting by external terminals ............................................... 80
4.6.1 Operation by multi-speed operation (Pr. 4 to Pr. 6, Pr. 24 to Pr. 27, Pr. 232 to Pr. 239)............. 80
4.6.2 Jog operation (Pr. 15, Pr. 16) ...................................................................................................... 82
4.6.3 Remote setting function (Pr. 59).................................................................................................. 84
4.7 Setting of acceleration/deceleration time and acceleration/
deceleration pattern ........................................................................ 87
4.7.1 Setting of the acceleration and deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45, Pr. 791, Pr. 792) .................................................................. 87
