Danfoss iC2 Application Manual page 261

Application Guide | iC2-Micro Frequency Converters
Troubleshooting
8
Introduction
8.1
When the drive fault circuitry detects a fault condition or a pending fault, an event that occurs in the drive is signaled by LED indicators
on the control panel. The event types in iC2-Micro Frequency Converters include warning or fault.
Faults
8.2
A fault causes the drive to trip (suspend operation). The drive has 3 trip conditions, which are shown in line 1.
Trip (auto restart)
The drive is configured to restart automatically after the fault is removed. The number of automatic reset attempts can be continuous
or limited to a programmed number of attempts. If the selected number of automatic reset attempts is exceeded, the trip condition
changes to trip (reset).
Trip (reset)
Requires resetting of the drive before operation after a fault is cleared. To reset the drive manually, press Stop/Reset button or use a
digital input, or a fieldbus command.
Trip lock (disc>mains)
Disconnect the mains AC input power to the drive long enough for the display to go blank. Remove the fault condition and reapply
power. Following power-up, the fault indication changes to trip (reset) and allows for manual, digital, or fieldbus reset.
Warnings
8.3
During a warning, the drive remains operational, although the warning flashes for as long as the condition exists. The drive could,
however, reduce the warning condition. For example, if the warning shown was warning 12, Torque Limit, the drive would reduce speed
to compensate for the overcurrent condition. Sometimes, if the condition is not corrected or worsens, an fault condition is activated and
the drive stops output to the motor terminals.
Warning/Fault Messages
8.4
The LEDs on the front of the drive and a code in the display signal a warning or an fault.
Table 70: LED Indication
WARN
READY
FAULT
A warning indicates a condition that requires attention, or a trend that would eventually require attention. A warning remains active until
the cause is no longer present. Under some circumstances, motor operation could continue.
An fault triggers a trip. The trip removes power to the motor. It can be reset after the condition has been cleared by pressing Stop/Reset
button, or through a digital input (See P 9.4.1 Digital Input Setting). The event that caused an fault cannot damage the drive, or cause a
dangerous condition. Faults must be reset to restart operation once their cause has been rectified.
The reset can be done in 3 ways:
Press Stop/Reset button.
l
A digital reset input.
l
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Steadily lit when a warning occurs.
Steadily lit when the drive is ready.
Flashes when a fault occurs.
AB413939445838en-000301 / 130R1254 |
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