
8. TROUBLESHOOTING
B–62755EN/01
370
When the spindle amplifier does not become normal state immediately
after power is turned on in the serial spindle system, this alarm is
informed.
This alarm does not occur once the system becomes ready including the
spindle system .
This alarm occurs during power on sequence before the system becomes
ready.
After the system becomes ready, serial spindle alarm is issued by alarm
749.
(1)Optical cable is in poor contact or spindle amplifier power is off.
(2)When display of spindle amplifier shows SU–01 or an alarm other than
AL–24 is displayed, power to the NC is turned on.
In this case, this alarm usually occurs when the NC’s power is turned
off while the serial spindle is operating. Turn off the power of serial
spindle once, then turn it on and starts the system.
(3)Combination of hardware is wrong.
(4)When the 2nd spindle is at the state of (1) to (3).
When the 2nd spindle is used, parameter is set as follows :
Bit 4 of parameter no.3701 is 1: No. of serial spindles connected is 2.
Confirm the details of troubles on diagnostic 409.
#7
0409
#6 #5 #4 #3
SPE
#2
S2E
#1
S1E
#0
SHE
DGN
#3(SPE) 0 : In spindle serial control, the serial spindle parameters satisfies the
starting conditions for spindle amplifier.
1 : In spindle serial control, the serial spindle parameters do not satisfy
the starting conditions for spindle amplifier.
#2(S2E) 0 : At the start of spindle serial control, the spindle is normal.
1 : At the start of spindle serial control, the spindle is abnormal.
#1(S1E) 0 : The serial communication module of the CNC side is normal.
1 : The serial communication module of the CNC side is abnormal.
#0(SPE) 0 : Serial communication module on the CNC side is normal.
1 : Serial communication module was detected to be abnormal on the
CNC side.
8.28
ALARM 750 (SPINDLE
SERIAL LINK
CANNOT BE
STARTED)
Points
Causes
Details of Alarms