IAI America SCON-CA - Manual (Page 169)

Chapter 3 Operation
159
[8] Alarm, Alarm Reset (*ALM, RES)
Input Output
PIO signal
RES *ALM
1) Alarm signal *ALM is set to ON in the normal status but turned OFF at the occurrence of an
alarm at a level equal to or higher than the operation release level.
2) Turning reset signal RES ON under occurrence of an alarm at the operation release level
allows the alarm (Note 1) to be released. The action is taken at the rising edge (ON edge).
3) The alarm reset should be done after the cause of the alarm is confirmed and removed. If
alarm reset and restart are repeated many times without removal of the cause, a severe
failure such as motor burnout may occur.
Note 1 Check the 9.4 Alarm List for details of alarms.
[9] Binary Output of Alarm Data Output (*ALM, ALM1 to 8)
Output
PIO signal
*ALM ALM1 to ALM8
1) If an alarm at a level equal to or higher than the operation release level occurs, alarm
output signals ALM 1 to 8 output the alarm information in the binary code format.
2) The PLC can read the binary code of alarm signal *ALM as the strobe signal to check the
alarm information.
� : ON �: OFF
*ALM ALM8 ALM4 ALM2 ALM1 Binary Code Description: Alarm code is shown in ( ).
� � � � � – Normal
� � � � � 2 Software reset during servo ON (090)
� � � � � 3
Move command during servo OFF (080)
Movement Command during Home Return Operation
(084)
Move command while pulse train input is effective (086)
� � � � � 4
Drive mode error (0DD)
Mismatched PCB (0F4)
� � � � � 6
Parameter data error (0A1)
Unsupported motor/encoder type (0A8)
� � � � � 7
Z-Phase Position Error (0B5)
Magnetic Pole Indeterminacy (0B7)
Home sensor non-detection (0BA)
Home return timeout (0BE)
Creep sensor not detected (0BF)
� � � � � 8
Actual Velocity Excessive (0C0)
Overrun detected (0C2)
(Note) *ALM Signal is an active low signal. It is ON when the power is applied to the controller, and
turns OFF when the signal is output.