Installation manual

Detected Fault Management Parameters
130 S1A53838 09/2011
Code Name / Description Adjustment range Factory setting
F610 [Underload det.]
Underload / alarm selection - 0
0
1
[Alarm]
If parameter F610 is set to 0, relay output functions 24 or 25 (see page 130
) can be used to signal an underload condition
without the drive faulting.
[Fault]
If parameter F610 is set to 1 and the loading level drops below the setting of F611 for a period of time longer than that set
by F612, the drive will trip, displaying code UC. The fault relay will be set if one has been defined (relay output functions 10 or
11, see page 98
). A relay assigned to signal an underloaded condition (functions 24 or 25, see page 99) will also be set.
The drive’s response to an underload condition is set by parameters F609, F610, F611, and F612.
The setting of parameter F610 determines whether an underload condition signals an alarm with an output relay or faults the
drive.
The sum of parameters F609 and F611 determines the drive loading level that will clear an underload alarm/detected fault.
Parameter F612 determines how long the drive can be under load before an alarm or detected fault is signaled.
See parameters F609, F610, F611 and F612 diagram below for more details.
F611 [Underload level]
Underload Detection Level 0 to 100% (1) 0%
Parameter F611 sets the underload detection level.
F609 [Underload band]
Underload Detection Level Bandwidth 1 to 20% (2) 10%
F612 [Underload det. time]
Underload Detection Time 0 to 255 s 0 s
F633 [Loss of VIA]
Loss of VIA Analog Signal 0 to 100% (3) 0%
0
1 to 100
[Disabled] Disabled.
If parameter F633 is set to 0, the drive will not monitor for loss of signal at analog input terminal VIA
[Fault detection level]
If parameter F633 is set to a value greater than 0 and:
The signal at VIA drops below the detection level selected,
and, the low signal level persists for 300 milliseconds or longer,
the drive will trip and the embedded display terminal will display the code E-18.
(1) Percentage of the drive’s current rating. Display can also be in amperes, depending on setting of parameter
[Unit value selection] (F701) (see page 120
).
(2) Percentage of [Underload level] (F611) setting.
(3) Percentage of maximum VIA signal level
+
F610 = 0 (Alarm Only)
Low Current
Signal Output
Output Current (%)
ON
F612 or Less
Time [Sec]
OFFOFF