
APPENDIXG. ALARM LIST
B–63864EN/03
808
ERROR CODES (SERIAL SPINDLE)
NOTE*1
Note that the meanings of the SPM indications differ
depending on which LED, the red or yellow LED, is on.
When the yellow LED is on, an error code is indicated with
a 2–digit number. The error code is not displayed on the
CNC screen.
When the red LED is on, the SPM indicates the number of
an alarm generated in the serial spindle.
³ See, “Alarms (Serial Spindle).”
Errors Displayed on the α Series Spindle Amplifier
SPM
indica-
tion(*1)
Faulty location and remedy Description
01 Check the *ESP and MRDY sequence. (For MRDY,
pay attention to the parameter setting regarding the
use of the MRDY signal (bit 0 of parameter No. 4001).)
Although neither *ESP (emergency stop signal; there
are two types of signals including the PMC signal and
PSM contact signal(*2)) nor MRDY (machine ready
signal) is input, SFR (forward rotation signal)/SRF
(reverse rotation signal)/ORCM (orientation com-
mand) is input.
02 Check the spindle motor speed detector parameter
(bits 2, 1, and 0 of parameter No. 4011).
When the spindle motor has a high–resolution mag-
netic pulse coder (Cs sensor) (bits 6 and 5 of param-
eter No. 4001 are set to 0 and 1, respectively), 128
/rev is to be set for the speed detector (bits 2, 1, and
0 of parameter No. 4011 are set to 0, 0, and 1, re-
spectively). However, a value other than 128 /rev is
set. In this case, the motor is not excited.
03 Check the parameters for the detector for Cs contour
control (bit 5 of parameter No. 4001 and bit 4 of param-
eter No. 4018).
Although use of a high–resolution magnetic pulse
coder (bit 5 of parameter No. 4001 = 1) or use of the
Cs contour control function by the sensor (bit 4 of
parameter No. 4018 = 1) is not set, a Cs control com-
mand is input. In this case, the motor is not excited.
04 Check the position coder signal parameter (bit 2 of
parameter No. 4001).
Although use of the position coder signal (bit 2 of pa-
rameter No. 4001 = 1) is not set, a servo mode (rigid
tapping, spindle positioning) or spindle synchroniza-
tion command is input. In this case, the motor is not
excited.
05 Check the orientation software option. Although the orientation option is not set, an orienta-
tion command (ORCM) is input.
06 Check the spindle output switching software option and
power line status signal (RCH).
Although the output switching option is not set, the
low–speed winding is selected (RCH = 1).
07 Check the sequence (CON, SFR, SRV). Although the Cs contour control mode is specified,
SFR/SRV is not input.
08 Check the sequence (SFR, SRV). Although the servo mode (rigid tapping, spindle posi-
tioning) is specified, SFR/SRV is not input.
09 Check the sequence (SPSYC, SFR, SRV) Although spindle synchronization mode is specified,
SFR/SRV is not input.
10 During execution of the C–axis control command, do
not specify another operation mode. Before entering
another mode, cancel the Cs contour control com-
mand.
Although Cs contour control mode is set, another
operation mode (servo mode, spindle synchroniza-
tion, or orientation) is specified.
11 During execution of the servo mode command, do not
specify another operation mode. Before entering
another mode, cancel the servo mode.
Although servo mode (rigid tapping, or spindle posi-
tioning) is set, another operation mode (Cs contour
control, spindle synchronization, or orientation) is
specified.