APPENDIXA. ALARM LIST
B–63835EN/03
554
The details of serial pulse coder alarm are displayed in the diagnosis
display (No. 202 and No.203) as shown below.
#7
202
#6
CSA
#5
BLA
#4
PHA
#3
PCA
#2
BZA
#1
CKA
#0
SPH
#6 (CSA) : The serial pulse coder is defective. Replace it.
#5 (BLA) : The battery voltage is low. Replace the batteries.
#4 (PHA) : The serial pulse coder or feedback cable is defective. Replace the serial
pulse coder or cable.
#3 (PCA) : The serial pulse coder is defective. Replace it.
#2 (BZA) : The pulse coder was supplied with power for the first time.
Make sure that the batteries are connected.
Turn the power off, then turn it on again and perform a reference position
return.
#1 (CKA) : The serial pulse coder is defective. Replace it.
#0 (SPH) : The serial pulse coder or feedback cable is defective. Replace the serial
pulse coder or cable.
#7
DTE203
#6
CRC
#5
STB
#4
PRM
#3 #2 #1 #0
#7 (DTE) : The serial pulse coder encountered a communication error.
The pulse coder, feedbak cable, or feedback receiver circuit is defective.
Replace the pulse coder, feedback cable, or NC–axis board
#6 (CRC) : The serial pulse coder encountered a communication error.
The pulse coder, feedback cable, or feedback receiver circuit is defective.
Replace the pulse coder, feedback cable, or NC–axis board.
#5 (STB) : The serial pulse coder encountered a communication error.
The pulse coder, feedback cable, or feedback receiver circuit is defective.
Replace the pulse coder, feedback cable, or NC–axis board.
#4 (PRM) : An invalid parameter was found. Alarm No. 417 (invalid servo
parameter) is also issued.
(6) Servo alarms(1/2)
Number Message Contents
401 SERVO ALARM: n–TH AXIS VRDY
OFF
The n–th axis (axis 1–8) servo amplifier READY signal (DRDY) went off.
Refer to procedure of trouble shooting.
402 SERVO ALARM: SV CARD NOT EX-
IST
The axis control card is not provided.
403 SERVO ALARM: CARD/SOFT MIS-
MATCH
The combination of the axis control card and servo software is illegal.
The possible causes are as follows:
· A correct axis control card is not provided.
· Correct servo software is not installed on flash memory.
404 SERVO ALARM: n–TH AXIS VRDY
ON
Even though the n–th axis (axis 1–8) READY signal (MCON) went off,
the servo amplifier READY signal (DRDY) is still on. Or, when the power
was turned on, DRDY went on even though MCON was off.
Check that the servo interface module and servo amp are connected.
405 SERVO ALARM: (ZERO POINT RE-
TURN FAULT)
Position control system fault. Due to an NC or servo system fault in the
reference position return, there is the possibility that reference position
return could not be executed correctly. Try again from the manual refer-
ence position return.
D The details of serial
pulse coder alarm