Danfoss VLT series, Руководство по обслуживанию

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1-6
VLT is a registered Danfoss trademark
WARNINGS AND ALARMS
When the drive fault circuitry detects a fault condition, or a
pending fault, a warning or alarm is issued. A flashing display
on the LCP indicates an alarm or warning condition and the
associated number code on line 2. A warning may precede
an alarm. Table 1-3,
Fault Messages , defines whether or not
a warning precedes an alarm and whether the drive suspends
operations (trips).
Alarms
An alarm causes the drive to trip (suspend operation). The
drive has three trip conditions which are displayed on line 1:
TRIP (AUTO RESTART) means the drive is programmed to
restart automatically after the fault is removed. The number of
automatic reset attempts may be continuous or limited to a
programmed number of attempts. This will change to TRIP
(RESET) if the selected number of automatic reset attempts is
exceeded.
TRIP (RESET) requires resetting the drive prior to operation
after a fault is cleared. The drive can be reset manually by
pressing the reset key on the keypad, a digital input, or a
serial bus command. For VLT 5000 series drives, the stop and
reset key are the same. If the stop/rest key is used to reset
the drive, the start key must be pressed to initiate a run
command in either local or remote.
TRIPLOCK (DISC> MAINS) requires that the main AC input
power to the drive must be disconnected long enough for the
display to go blank. The fault condition must be removed and
power reapplied. Following power up, the fault indication will
change to TRIP (RESET) and allow for manual, digital, or serial
bus reset.
Line 2 displays alarm and the associated number while line 3
identifies the alarm in plain language.
ALARM:12
SETUP
1
TRIP (RESET)
TORQUE LIMIT
WARN.4
SETUP
1
MAINS PHASE LOSS
Warnings
During a warning, the drive will remain operational, although
the warning will flash for as long as the condition exists. The
drive may, however, take action to reduce the warning
condition. For example, if the warning displayed were
Torque
Limit (Warning 12), the drive would be reducing speed to
compensate for the over current condition. In some cases, if
the condition is not corrected or grows worse, an alarm
condition would be activated and the drive output to the motor
terminated. Line 1 identifies the warning in plain language and
line 2 identifies the warning number.
SERVICE FUNCTIONS
Service information for the drive can be shown on display lines
3 and 4. Twenty-six different items can be accessed. Included
in the data are counters that tabulate operating hours, power
ups and trips; fault logs that store drive status values present
at the 20 most recent events that stopped the drive; and drive
nameplate data. The service information is accessed by
displaying items in the drive's 600s parameter group.
Parameter settings are displayed by pressing the
[MENU] key on the LCP keypad.
Use the [+] and [-] keys on the LCP keypad to
scroll through parameters.
See the operator's manual for detailed information on accessing
and displaying parameters and for descriptions and procedures
for service information available in the 600s parameter group.
MENU
+
–
0.0Hz
SETUP
1
604 OVER TEMP'S
0003
Line 3
Line 4
FREQUENCY