
5 - 2 Alpha Series Servo Amplifier Module (SVM) with FSSB - April 1998 GFK-1546
5
Servo Amplifier
Number of
NC
Alarms
Message Meaning
430 n axis : servo motor overheat Servo motor overheated.
431 n axis : cnv. overload (OH) Temperature of the converter (PSM) is abnormally high.
432 n axis : cnv. lowvolt con./powfault (LV) Control circuit power supply is abnormally low.
433 n axis : cnv. low volt DC link (DCLV) DC voltage of the voltage main circuit power supply is
abnormally low, or the outer circuit breaker trips.
436 n axis : softthermal (OVC) Overheat alarm detected by the software.
438 n axis : inv. abnormal current (HC) Abnormal over-current flowed into the servo amplifier unit.
439 n axis : overvolt power (HV) The DC voltage of the main circuit power supply is abnormally
high.
440 n axis : cnv. ex deceleration pow. (DCOH) The average regenerative discharge energy is too high (too
frequent acceleration / deceleration).
441 n axis : abnormal current offset Current feedback is abnormal.
443 n axis : cnv. cooling fan failure (FAL) The fan, built into the servo amplifier unit, stopped.
445 n axis : soft disconnection alarm Disconnection alarm detected by software.
446 n axis : hard disconnection alarm Disconnection alarm detected by hardware (see note below).
447 n axis : hard disconnection (ext) External pulse coder cable is disconnected.
448 n axis : unmatched feedback alarm Feedback data of pulse coder was not matched to its external
pulse coder.
460 n axis : FSSB disconnection FSSB communication is open:
1. Optical fiber cable is open or disconnected.
2. Control power supply shut down.
3. LV alarm for the control power supply occurred.
461 n axis : illegal amp interface Both axes are Fast interface in a 2-axis amplifier.
462 n axis : send CNC data failed The slave side amplifier did not receive normal data because of an
FSSB communication error.
463 n axis : send slave data failed The servo side amplifier did not receive normal data because of
an FSSB communication error.
464 n axis : write ID data failed The amplifier cannot write maintenance data on the maintenance
screen.
465 n axis : read ID data failed The amplifier cannot read maintenance data on the maintenance
screen.
466 n axis : motor / amp combination The value of the amplifier maximum current is illegal for the
motor maximum current.
467 n axis : illegal setting of axis The amplifier is set to two axes on the Axis Setting screen, but the
following is not possible:
1. Learning control (PRM2008#5=1).
2. High current loop (PRM2004#0=1).
3. High interface axis (PRM2005#4=1)
Note: Hard disconnection alarm has not occurred to the Series 16C or 16i.
The possibility of FBAL (ALARM 1 Bit 1=1).
External hardware disconnection FBAL (ALARM 1 Bit 1=1, ALARM 2 Bit 7=1, Bit 4=1.
Software disconnection (ALARM 1 Bit 1=1).
Count miss error (ALARM 1 Bit 1=1, ALARM 2 Bit 7=1, ALARM 3 Bit 3=1).