APPENDIX
B–63835EN/03
A. ALARM LIST
557
Number ContentsMessage
456 ILLEGAL CURRENT LOOP The current control cycle settings (parameter No. 2004, bit 0 of pa-
rameter No. 2003, and bit 0 of parameter No. 2013) are incorrect.
Possible problems are as follows.
– For the two axes whose servo axis numbers (settings of parame-
ter No. 1023) are an odd number followed by an even number (a
pair of axes 1 and 2 or axes 5 and 6, for example), a different
current control cycle is set for each of the axes.
– The requirements for slaves needed for the set current control
cycle, including the number, type, and connection method of
them, are not satisfied.
457 ILLEGAL HI HRV (250US) Use of high–speed HRV is specified although the current control
cycle is 200 µs.
458 CURRENT LOOP ERROR The current control cycle setting does not match the actual current
control cycle.
459 HI HRV SETTING ERROR Of two axes having adjacent servo axis numbers (parameter No.
1023), odd number and even number, high–speed HRV control can
be performed for one axis and not for the other.
460 n AXIS : FSSB DISCONNECT FSSB communication was disconnected suddenly. The possible
causes are as follows:
1) The FSSB communication cable was disconnected or broken.
2) The power to the amplifier was turned off suddenly.
3) A low–voltage alarm was issued by the amplifier.
461 n AXIS : ILLEGAL AMP INTERFACE The axes of the 2–axis amplifier were assigned to the fast type inter-
face.
462 n AXIS : SEND CNC DATA FAILED Because of an FSSB communication error, a slave could not receive
correct data.
463 n AXIS : SEND SLAVE DATA
FAILED
Because of an FSSB communication error, the servo system could
not receive correct data.
464 n AXIS : WRITE ID DATA FAILED An attempt was made to write maintenance information on the ampli-
fier maintenance screen, but it failed.
465 n AXIS : READ ID DATA FAILED At power–up, amplifier initial ID information could not be read.
466 n AXIS : MOTOR/AMP COMBINA-
TION
The maximum current rating for the amplifier does not match that for
the motor.
467 n AXIS : ILLEGAL SETTING OF
AXIS
The servo function for the following has not been enabled when an
axis occupying a single DSP (corresponding to two ordinary axes) is
specified on the axis setting screen.
1. Learning control (bit 5 of parameter No. 2008 = 1)
2. High–speed current loop (bit 0 of parameter No. 2004 = 1)
3. High–speed interface axis (bit 4 of parameter No. 2005 = 1)
468 HI HRV SETTING ERROR(AMP) Use of high–speed HRV is specified for a controlled axis of an ampli-
fier which does not support high–speed HRV.