10.07.2015 Views

Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

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8.11 Other Output Signals8.11 Other Output SignalsThe following output signals, which have no direct connection with the control modes, are used for machine protection.8.11.1 Servo Alarm Output (ALM) and Alarm Code Output (ALO1, ALO2, ALO3)(1) Servo Alarm Output (ALM)This signal is output when an error is detected in the SERVOPACK.TypeSignalName(2) Alarm ResetConnectorPin NumberSettingMeaningOutput ALM CN1-31, 32 ON (low level) Normal SERVOPACK condition(Factory setting) OFF (high level) SERVOPACK alarm condition• IMPORTANTAlways form an external circuit so this alarm output turns OFF the main circuit power supply to the SERVOPACK.TypeInputSignalName/ALM-RSTConnectorPin NumberCN1-44Alarm ResetNameWhen a servo alarm (ALM) has occurred and the cause of the alarm has been eliminated, the alarm can be reset by turningthis signal (/ALM-RST) from OFF (high level) to ON (low level).This signal can be allocated to other pin numbers with Pn50B.For details on the procedure, refer to 7.3.2 Input Circuit Signal Allocation.The /ALM-RST signal cannot be constantly enabled by the allocation of an external input signal. Reset the alarm by changingthe signal from high level to low level. The alarm can also be reset from the panel operator or digital operator. Refer to7.1.2 Key Names and Functions for details.IMPORTANT1. Some encoder-related alarms cannot be reset with the /ALM-RST signal input. To reset these alarms,turn OFF the control power supply.2. When an alarm occurs, always eliminate the cause before resetting the alarm. The methods for troubleshootingalarms are described in 10.1.6 Troubleshooting of Alarm and Warning.(3) Alarm Code Output8TypeSignalNameConnectorPin NumberMeaningOutput ALO1 CN1-37 Alarm code outputOutput ALO2 CN1-38 Alarm code outputOutput ALO3 CN1-39 Alarm code outputOutput SG CN1-1 Signal ground for alarm code outputThese open-collector signals output alarm codes. The ON/OFF combination of these output signals indicates the type ofalarm detected by the servomotor.Use these signals to display alarm codes at the host controller. Refer to 10.1.1 Alarm Display Table for details on alarmcode output.8-77

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