APPENDIX
B–63525EN/02
A. ALARM LIST
903
No. DescriptionFaulty location and remedy
SPM in-
dica-
tion(*1)
Message
7n34 SPN_n_ : PARAMETER
SETTING ER-
ROR
34 Correct a parameter value according
to the manual.
If the parameter number is unknown,
connect the spindle check board, and
check the indicated parameter.
Parameter data exceeding the allow-
able limit is set.
7n35 SPN_n_ : EX SETTING
GEAR RATIO
35 Correct the value according to the pa-
rameter manual.
Gear ratio data exceeding the allow-
able limit is set.
7n36 SPN_n_ : OVERFLOW
ERROR
COUNTER
36 Check whether the position gain val-
ue is too large, and correct the value.
An error counter overflow occurred.
7n37 SPN_n_ : SPEED DE-
TECT PAR. ER-
ROR
37 Correct the value according to the pa-
rameter manual.
The setting of the parameter for the
number of pulses in the speed detec-
tor is incorrect.
7n39 SPN_n_ : 1–ROT Cs SIG-
NAL ERROR
39 1 Adjust the 1–rotation signal in the
pre–amplifier.
2 Check the cable shield status.
3 Replace the cable.
An incorrect relationship between the
1–rotation signal and the number of
AB phase pulses was detected dur-
ing Cs contour control.
7n40 SPN_n_ : NO 1–ROT Cs
SIGNAL DE-
TECT
40 1 Adjust the 1–rotation signal in the
pre–amplifier.
2 Check the cable shield status.
3 Replace the cable.
The 1–rotation signal is not gener-
ated during Cs contour control.
7n41 SPN_n_ : 1–ROT POS–
CODER ER-
ROR
41 1 Check and correct the parameter.
2 Replace the cable.
3Re–adjust the BZ sensor signal.
1 The 1–rotation signal of the
spindle position coder (connector
JY4) is abnormal.
2 The 1–rotation signal (connector
JY2) of the MZ or BZ sensor is ab-
normal.
3 Parameter setting error
7n42 SPN_n_ : NO 1–ROT.
POS–CODER
DETECT
42 1 Replace the cable.
2Re–adjust the BZ sensor signal.
1 The 1–rotation signal of the
spindle position coder (connector
JY4) is disconnected.
2 The 1–rotation signal (connector
JY2) of the MZ or BZ sensor is dis-
connected.
7n43 SPN_n_ : DISCON. PC
FOR DIF. SP.
MODE
43 Replace the cable. The differential speed position coder
signal (connector JY8) in SPM type 3
is abnormal.
7n44 SPN_n_ : CONTROL
CIRCUIT(AD)
ERROR
44 Replace the SPM control printed cir-
cuit board.
Abnormality in an SPM control circuit
component was detected (A/D con-
verter abnormality).
7n46 SPN_n_ : SCREW
1–ROT POS–
COD. ALARM
46 1 Check and correct the parameter.
2 Replace the cable.
3Re–adjust the BZ sensor signal.
An abnormality equivalent to alarm
41 was detected during thread cutting
operation.