Fault Relay.eps
R1A R1B R1C
Fault Relay Diagram
09/2003
Altivar® 58 TRX AC Drives
Fault Management Parameters
FAULT MANAGEMENT PARAMETERS
The ATV58 TRX drive is equipped with features that are designed to protect the drive controller and motor, and to provide process related information. Understanding the fault management capabilities of the drive controller and determining the proper configuration for the application can enhance the total system installation and performance over the life of the equipment. The fault messages provided by the drive controller can be divided into three categories:
•Protective faults are displayed when the drive detects conditions that may damage the drive controller and/or motor. The drive controller shuts down to prevent further damage from occurring.
•Drive faults are displayed when a problem in the drive needs to be diagnosed.
•Process faults are displayed when a process signal used by the drive controller is interrupted.
Fault Messages
Protective Faults | Drive Faults | Process Faults |
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Input phase loss | Precharge fault | Loss of |
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Undervoltage | EEPROM fault | Loss of |
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Overvoltage | Internal fault | External fault |
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Drive overheating | Internal communication fault | Speed feedback fault |
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Motor overload | Power rating error | Communication network fault |
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Overbraking | Option error |
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Motor phase loss | Option removed |
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Overcurrent | EEPROM checks |
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Motor short circuit |
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Motor overheating |
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Thermal sensor fault |
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Overspeed |
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Ramp not followed |
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Fault Relay |
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The fault relay (R1) provides 1 normally open and 1 normally closed contact. The relay is energized and the state of the contacts reverses when the drive controller is powered up and a fault is not present. This relay cannot be
Resetting a Fault
The drive controller can be reset after a fault by one of three methods:
•Turning power to the drive controller off, wait for the LEDs to go off, and apply power.
•Using the reset button on the keypad, if programmed for local control, or by a logic input assigned to Fault Reset.
•By the Automatic Restart function if configured.
Automatic Restart
This function permits automatic restarting after the drive controller detects a fault, provided that the other operating functions are correct, a Run command is present, and the fault has disappeared. The factory setting for this function is NO. The number of restart attempts and the delay between these attempts is selectable.
When the Auto restart is selected, the fault relay remains energized so that the drive controller does not signal a fault from a condition from which it may be able to restart. If the fault has disappeared, the drive controller will attempt to restart the motor after the delay time configured. The auto restart delay time is factory set at 30 seconds and has an adjustable range of 0.1 to 999.9 seconds. If the drive controller remains faulted after attempting the configured number of restarts, the fault relay will then deenergize. The drive controller must be reset by cycling power after the cause of the fault has been eliminated. The number of restart attempts is factory set at 5 and has an adjustable range of 0 to 255.
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