Troubleshooting
Alarm, Warning and Extended Status Word
Alarm and Warning Messages
General
There is a clear distinction between alarms and warnings. In the event of an alarm, the adjustable frequency drive will enter a fault condition. After the cause for the alarm has been cleared, the master must acknowledge the alarm message in order to start operation of the adjustable frequency drive again. A warning, on the other hand, may appear when a warning condition arises, then disappear when conditions return to normal without interfering with the process.
Alarm Word and Warning Word are shown on the display in Hex format. If there is more than one warning or
alarm, a sum of all warnings or alarms will be shown. Warning Word and Alarm Word are displayed in par.
Guide.
Warnings
All warnings within the adjustable frequency drive are represented by a single bit within a warning word. A warning word is always an action parameter. Bit status FALSE [0] means no warning, while bit status TRUE [1] means warning. Each bit status has a corresponding text string message. In addition to the Warning Word message, the master will also be notified via a change to bit 7 in the status word.
Alarms
Following an alarm message the adjustable frequency drive will enter a fault condition. Only after the fault has been rectified and the master has acknowledged the alarm message by setting bit 3 in the Control Word, can the adjustable frequency drive resume operation. All alarms within the TR200 are represented by a single bit within an alarm word. An alarm word is always an action parameter. Bit status FALSE [0] means no alarm, while bit status TRUE [1] means alarm.
TR200 BACnet |
