Danfoss VLT AutomationDrive FC 302 Programming Manual page 80

Parameter Descriptions
4-53 Warning Speed High
Range:
Size [ par. 4-52
related - 60000
*
RPM]
3 3
4-54 Warning Reference Low
Range:
-999999.999
*
4-55 Warning Reference High
Range:
999999.999
*
999999.999 ]
4-56 Warning Feedback Low
Range:
-999999.999
ReferenceFeed-
backUnit
*
4-57 Warning Feedback High
Range:
999999.999
ReferenceFeed-
backUnit
*
78
Function:
Enter the n value. When the motor
HIGH
speed exceeds this value, the display
reads SPEED HIGH. The signal outputs
can be programmed to produce a
status signal on terminals 27 or 29 and
on relay outputs 01 or 02.
Function:
[ -999999.999 - Enter the lower reference limit.
par. 4-55 ] When the actual reference falls
below this limit, the display
indicates Ref
LOW
outputs can be programmed to
produce a status signal on
terminal 27 or 29 (FC 302 only)
and on relay output 01 or 02 (FC
302 only).
Function:
[ par. 4-54 - Enter the upper reference limit.
When the actual reference exceeds
this limit, the display reads Ref
High. The signal outputs can be
programmed to produce a status
signal on terminal 27 or 29 (FC 302
only) and on relay output 01 or 02
(FC 302 only).
Function:
[ -999999.999 - Enter the lower feedback
par. 4-57 limit. When the feedback
ReferenceFeed- falls below this limit, the
backUnit] display reads Feedb Low.
The signal outputs can be
programmed to produce
a status signal on
terminal 27 or 29 (FC 302
only) and on relay output
01 or 02 (FC 302 only).
Function:
[ par. 4-56 - Enter the upper feedback
999999.999 limit. When the feedback
ReferenceFeed- exceeds this limit, the
backUnit] display reads Feedb High.
The signal outputs can be
programmed to produce
a status signal on
terminal 27 or 29 (FC 302
®
VLT AutomationDrive FC 301/302 Programming Guide
4-57 Warning Feedback High
Range:
4-58 Missing Motor Phase Function
Option:
. The signal
[0] Disabled
[1] Trip 100
ms
[2] Trip 1000
ms
*
[3] Trip 100ms
3ph detec.
[5] Motor
Check
3.6.4 4-6* Speed Bypass
Some systems call for avoiding certain output frequencies
or speeds, due to resonance problems in the system. A
maximum of 4 frequency or speed ranges can be avoided.
4-60 Bypass Speed From [RPM]
Array [4]
Range:
Size related
MG33MI02 - Rev. 2013-11-20
Function:
only) and on relay output
01 or 02 (FC 302 only).
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
Displays alarm 30, 31 or 32 in the event of a
missing motor phase. It is strongly
recommended to enable to avoid motor
damage.
The frequency converter does not issue a
missing motor phase alarm. Not recommended
due to risk of motor damage.
For a quick detection time and alarm in the
event of a missing motor phase.
For a slow detection time and alarm in the
event of a missing motor phase.
Special option relevant for crane applications
when lowering a small load that lets the
frequency converter avoid false detections of
missing motor phase.
This option is a reduced version of option [1]
Trip 100 ms.
1 phase missing is handled as in option [1] Trip
100 ms. 3-phase detection is reduced compared
to option [1] Trip 100 ms.
The 3-phase detection is only working at start-
up and in the low speed range where a
significant current is running, avoiding false
trips during small motor current.
Only available for FC 302 FLUX closed loop.
The frequency converter detects automatically
when the motor is disconnected and resumes
operation once the motor is connected again.
Valid for FC 302 only.
Function:
[ 0 - par. Some systems call for avoiding
*
4-13 RPM] certain output speeds due to
resonance problems in the system.