Q9 ASD Installation and Operation Manual 195
Alarms, Trips, and Troubleshooting
An Alarms notifies the user via the EOI display and ASD output terminal that a system operating limit is
being exceeded and that appropriate action is required to rectify the condition or a Fault will be incurred
(in most cases; e.g., a Part Replacement alarm will not cause the system to trip).
User Notification Codes are used to alert the user to active system functions (e.g., ETN, ETN2,
Emergency Off, etc.).
If a user setting or an ASD operating parameter has been exceeded, or if a data transfer function produces
an unexpected result, a condition that is referred to as a Fault is incurred.
Some Faults have an associated Alarm that provides a warning that the normal operating condition of the
system is not within specifications and that a Trips may be imminent.
In some cases, if the event that caused the Alarm does not return to its normal operating range within a
specified time (some alarms are for notification only and do not result in a trip), the ASD Faults and a
Trip is incurred (Fault and Trip are sometimes used interchangeably).
A Trip is a safety feature, and is the result of a Fault, that disables the ASD system in the event that a
subsystem of the ASD is malfunctioning, or if one or more of the variables listed below exceeds its normal
range in time and/or magnitude.
• Current,
• Voltage,
•Speed,
• Temperature,
• Torque, or
• Load.
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