
19
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
7.2 Parameter for Pole detection
The follows are the parameters for Pole detection.
15i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
3007 4007 4007 EPFSIG
EPFSIG: Select the trigger signal for the pole position detection.
Set according to the using the trigger signal.
= 0: Use SFR/SRV as the trigger for the pole detection.
= 1: EPFSTR (External signal from machine)
15i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
3008 4008 4008 NEGREF
NEGREF: The setting for the use of the motor-sensor reference signal as the standard pole position
Case of NEGREF=”1”:
SPM neglects the reference signal of the sensor as the standard pole position. In this case, SPM uses the
final stop position of the pole detection as the standard of the pole position
Case of NEGREF=”0”:
In this setting, there are the following differences by the difference of spindle software.
*) Spindle software 9D53/03(C), 9D70/02(B) or later
The pole-position correspond to the first detected reference signal position of motor-sensor can be
confirmed after the pole detection is finished. If AMR offset parameter (No.4084: 16i) is not “0”, SPM will
replace the pole-position correspond to the reference signal position by AMR offset parameter when the
reference signal is detected.
*) Spindle software except 9D53/03(C), 9D70/02(B) or later
SPM uses the reference signal position as the zero pole position. Therefore, it is necessary to fix
reference signal position of sensor to the zero pole position of the synchronous spindle motor in this
case.
15i 16i 30i
5
th
4
th
3
rd
2
nd
1
st
3083 4083 4083 5
th
digit: =0(Normal setting) / =1(setting for the current step mode)
4
th
, 3
rd
digit: Current ratio (unit %) at the pole-detection sequence
2
nd
, 1
st
digit: Time to confirm motor stop (unit 0.1sec) at the pole-detection sequence
This parameter is used when the pole detection is executed.
5
th
digits: Normally, this parameter must be set “0”.
4
th
, 3
rd
digits: If DC current mode is selected, this parameter decides the ratio of excitation current against
maximum current (parameter No.4111: 16i). If Auto mode is selected (SELMET=1), this
parameter is used as excitation current in Minute moving mode.
2
nd
, 1
st
digits: This parameter decides the time to confirm motor stop in DC current mode (conventional
mode) of pole-detection.
If the detected pole position is off to the real pole position by the friction, increase the current ratio and the time
to confirm motor stop.
15i 16i 30i
3084 4084 4084 AMR offset (0 to 8192) (9D53/C, 9D70/B or later)
This is the compensation parameter for AMR offset function. This function is recommended to prevent
unevenness of output torque by unevenness of pole detection accuracy. This parameter must be set “0” if
the software except the above is used.
AMR offset function does work if NEGREF (No.4008#6: 16i) is “0”, and its behavior is different as the
follows by the setting of No.4084 (AMR offset).