Yaskawa Sigma II Series Servo System - Manual (Page 432)

Sigma II User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
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9.2.6 Additional Sigma II Alarms
Alarm Code Descriptions
A.08 Linear scale pitch setting error.
A.33 Wrong input power. Amplifier is in AC input mode (Pn001.2=0), but has DC input; or vice
versa
A.76 Pre-charge contactor failure. Pre-charge contactor failed to close when SVON signal is
applied. Applicable to large capacity (22-55kW) amplifiers only.
A.C2 Encoder output phase error. Applicable to linear scale only
A.C5 Linear motor Hall sensor position detection error.
A.F4 Magnetic contactor for Soft-Charge not closed after 500ms of PowerON. (Applicable to large
capacity drives only)
Alarm with Intelligent Option Boards (MP940, etc.) :
A.D1 Full-Closed Loop (FC100): FC encoder and motor encoder pulses discrepancy too large.
Check Pn206
A.E0 Option board not connected/no response. At power on, the SGDH will check for 10 seconds if
the option board is connected. Check Pn004, it should be 0000.
A.E1 Option board timed out. Timer in SGDH starts timing when control board function starts.
Timer currently is set for 10 sec.
A.E2 Watch Dog Timer alarm. Option board and SGDH are out of synchronism.
A.E5 MECHATROLINK synchronization error.
A.E6 MECHATROLINK communication error (failed twice consecutively).
A.E7 Option board not connected. After power on with option board connected, the option board is
removed while power is still on. Reset alarm with Fn014.
The following Alarms are generated by Option Boards:
A.93 Low absolute encoder battery (NS600)
A.94 Data set up warning. Invalid or out of range data.
A.95 Invalid command warning. Inappropriate command was issued for the current control state.
A.9F I/O cable not connected (MP940 or MECHATROLINK cable disconnected).
A.b6 Option board (JL-040) abnormal.
A.E9 MP940 alarm. This alarm is generated by the MP940 when there is problem in the MP940.
Check MP940 for more information.
A.EA SGDH does not respond at power on or after reset.
A.Eb SGDH initial access error. SGDH Power on start up confirmed, but response is absent or
faulty.
A.EC Watch Dog Timer error. SGDH ran away or WDT abnormal.
A.ED Command execution incomplete.
A.EF Controller Alarm