Sigma II User’s Manual
Chapter 5: Parameter Settings and Functions
5-71
Alarm codes ALO1, ALO2 and ALO3 are output to indicate each alarm type.
The uses of open-collector output signals ALO1, ALO2, and ALO3 is described
below.
These signals output alarm codes to indicate the type of alarm detected by the servo
amplifier. Use these signals to display alarm codes at the host controller. See
9.2.3
Alarm Display Table
for more on the relationship between alarm display and alarm
code output.
When a servo alarm (ALM) occurs, eliminate the cause of the alarm and set the
following /ALM-RST input signal to high level (ON) to reset the alarm.
The alarm reset signal is used to reset a servo alarm.
Form an external circuit so the servo amplifier turns OFF when an alarm occurs.
Alarms are reset automatically when the control power supply is turned OFF.
Alarms can also be reset using a panel or digital operator.
Note
:
1.
Encoder alarms cannot always be reset by inputting the /ALM-RST signal. In that case, turn the
control power supply OFF to reset the alarm.
2.
When an alarm occurs, always eliminate the cause before resetting the alarm. See
9.2.1 Trouble-
shooting Problems with Alarm Displays
for more details on troubleshooting the system when an
alarm occurs.
Output ALO1 CN1-37
Alarm Code Output
Speed/Torque Control,
Position Control
Output ALO2 CN1-38
Alarm Code Output
Speed/Torque Control,
Position Control
Output ALO3 CN1-39
Alarm Code Output
Speed/Torque Control,
Position Control
Output /SG CN1-1
Signal Ground for Alarm Code Output
Speed/Torque Control,
Position Control
Input /ALM-RST CN1-44
Alarm Reset
Speed/Torque Control,
Position Control
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