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Design.
Date Ed.
1
04.11.30
HEET
DRAW. No.
U
T.
TITLE
M. Niwa
Revision of αi series Spindle software
9D50 edition M, 9D53 edition D
and 9D70 edition C
A-63448E-108
01
7. Disconnection detection disable signal for synchronous spindle motor [9D53/D,9D70C]
7.1. General
Disconnection detection disable signal (DSCNA) for synchronous spindle motor becomes available.
Please note that the specification for synchronous spindle motor is partly different from that for
induction motor.
7.2. Input signal/Output signal
7.2.1. Input signal (PMC→CNC)
15i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
G228 G073 G073
DSCNA
G236 G077 G077
DSCNB
DSCNA, B : Disconnection detection disable signal
This signal is used to detach the feedback cable between the amplifier and motor.
0 : Enables disconnection and overheat detection.
1 : Disables disconnection and overheat detection (Note 1)
Note 1
In case of synchronous spindle motor, even if disconnection detection disable signal (DSCNA)
is “1”, motor sensor disconnection alarm (spindle alarm 73) is detected during excitation.
In case of synchronous spindle motor, spindle software monitors whether motor sensor
feedback is disconnected or not while disconnection detection disable signal (DSCNA) is “1”.
And detecting disconnection of motor sensor causes that pole position is lost (EPFIXA=0).
Therefore, detecting that motor sensor feedback is disconnected does not cause motor sensor
disconnection alarm (spindle alarm 73) as long as disconnection detection disable signal
(DSCNA) is “1” (except during excitation). But detecting disconnection of motor sensor causes
that pole position is lost.
7.2.2. Output signal (CNC→PMC)
15i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
F230 F048 F048
EPFIXA
F246 F052 F052
EPFIXB
EPFIXA, B : Pole position status signal
This signal means whether the pole position is fixed or not.
0 : Pole position is lost.
1 : Pole position is fixed.