6-196
For magnetic pole position adjustment of synchronous motor
When the card is combined with a motor for the first time after the purchase to drive a synchronous motor,
the confirmation, adjustment and setting of the magnetic pole position are required. (Settings differ
depending on the motor.)
Set the magnetic pole position offset value of the applicable motor, or confirm and adjust the magnetic
pole position according to the following procedure. (If the values described in the test report have been
set, confirm the position according to the following procedure,)
If the card was already combined for operation after it had been purchased, if PG is installed later, or if
replacement of PG is required, the confirmation, adjustment and setting must be performed without fail.
・ The adjustment of magnetic pole position must observe the following.
・ If the operation is for the first time after the purchase or after the replacement of the motor, PG, or inverter unit,
the adjustment must be performed without fail.
・ If the operation is performed without adjusting the magnetic pole position (o10, A60, A160) or when settings
significantly deviate from true values, operation in opposite direction or runaway may occur in the worst cases.
Failure to observe this precaution could cause an accident.
Failure to observe this precaution could cause injury.
◆ Pre-setting of parameters
E69 (Ao1 assignment) : 26 (U-phase voltage)
E70 (Ao2 assignment) : 39 (SMP)
E84 (Ao1-5 filter setting) : 0.000s (Filter cancel)
◆ Rotating the motor manually, confirm that the position relationships between Ao1 and Ao2 waveforms
are as shown below.
If waveform is significantly broken, adjust the value of o10 (with M1 selected), A60 (with M2
selected), or A160 (with M3 selected) to achieve the relationships shown in Figure 6.8.7.
Ao
1
(Inductive
voltage)
Ao
2
(Magnetic pole
position)
Ao
1
(Inductive
voltage)
Ao
2
(Magnetic pole
position)
Time
Time
Time
Time
When the setting of o10 is made larger
When the setting of o10 is made smaller
When the setting of o10 is made smaller
When the setting of o10 is made larger
Running forward Running reverse
Figure 6.8.7 Adjustment of Magnetic Pole Position
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