
24
Manual for
Synchronous Spindle Motor Drive
EDT. DATE DESIG. DESCRIPTION PAGE /29
A-63639E-103 /03
NO.
TITLE
NEWLY Y.Toyozawa
K.Takahashi
2003.06.13 01
02 2003.10.15 K.Takahashi
dded SSM etc. Y.Toyozawa
03 2004.06.09 K.Takahashi Revised Pole detect, etc. Y.Toyozawa
(2) Case B (Parameter No.4007#7(16i):EPFSIG=1; used EPFSTR as the trigger signal)
Pole setting signal EPFIX and the start signal dedicated for pole detection EPFSTR is assumed to correspond
to the indicator or key respectively on the machine operator panel. Signal MPOF must be not entered.
1) Recognized EPFIX=0 which means the indicator off, and get the pole detection ready.
2) Set EPFSTR=1 to start the pole detection.
3) The temporary pole setting is done after the motor moves at 0-degree position and 90-degree position
(mechanical angle is 90degree/pole-pair) and stop.
4) The temporary pole setting turn EPFIX=1 with the indicator lit.
5) Recognized EPFIX=1 (Pole detection completed), and turn EPFSTR=0.
6) EPFSTR=0 run the motor with the velocity command former input. But the velocity command should be set
after Pole detection completed (EPFIX=1 and EPFSTR=0).
7) If an alarm happens which could lose the pole position already acquired, that makes EPFIX=0 of the lost
pole position. Try again the pole detection sequence from the first.
0-degree position 90-degree
position
Electrical an
le
Electrical an
le
Lost pole position
Invalid velocit
command
EPFSTR
Powe
MRDY
& *ESP
& SFR/SRV
Velocit
command
EPFI
Motor Velocit
Pole set
Valid velocit
command
P
l
i
n
m
l
larm, lost pole position
h
n
EPFIX=
Lost pole position
Invalid velocity
command
MPOF=0