Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 38

Parameters
4-51 Warning Current High
Range:
Size
related 194.0 A]
*
3 3
4-54 Warning Reference Low
Range:
-4999 [ -4999 -
*
4999 ]
4-55 Warning Reference High
Range:
4999.000 [Depend on
*
the value of
4-54 Warning
Reference Low-
4999.000]
4-56 Warning Feedback Low
Range:
-4999.000 [-4999.000-
*
Depend on the
value of 4-57
Warning
Feedback High]
4-57 Warning Feedback High
Range:
4999.000 [Depend on
*
the value of
4-56 Warning
Feedback Low
-4999.000]
36
Function:
[ 0.0 - Enter the I value. When the motor
HIGH
current exceeds this limit, a bit in the
statusword is set. This value can also be
programmed to produce a signal on the
digital output or the relay output.
Function:
Enter the lower reference limit. When the
actual reference falls below this limit, the
display indicates Ref . The signal outputs
Low
can be programmed to produce a status
signal on terminal 27 or 29 and on relay
output 01 or 02.
Function:
Use this parameter to set a higher
limit for the reference range.
When the actual reference exceeds
this limit, the display reads Reference
High. Warning bit 19 is set in 16-94
Ext. Status Word. Output Relay can be
configured to indicate this warning.
LCP warning light does not light
when this parameter set limit is
reached.
Function:
Use this parameter to set a lower
limit for the feedback range.
When the feedback falls below this
limit, the display reads Feedback
Low. Warning bit 6 is set in 16-94
Ext. Status Word. Output Relay can
be configured to indicate this
warning. LCP warning light does
not light when this parameter set
limit is reached.
Function:
Use this parameter to set a higher
limit for the feedback range.
When the feedback exceeds this
limit, the display reads Feedback
High. Warning bit 5 is set in 16-94
Ext. Status Word. Output Relay can be
configured to indicate this warning.
LCP warning light does not light
when this parameter set limit is
reached.
®
VLT HVAC Basic Drive FC 101 Programming Guide
4-58 Missing Motor Phase Function
Option: Function:
[0] Off No alarm is displayed if a missing motor phase occurs.
[1] On
*
3.5.4 4-6* Speed Bypass
Define the Speed Bypass areas for the ramps. Some
systems call for avoiding certain output frequencies or
speeds, due to resonance problems in the system. 3
frequency ranges can be avoided.
4-61 Bypass Speed From [Hz]
Array [3]
Range:
0 Hz
*
Hz]
4-63 Bypass Speed To [Hz]
Array [3]
Range:
0 Hz
*
Hz]
3.5.5 Semi-Automatic Bypass Speed Set-up
The Semi-Automatic Bypass Speed Set-up can be used to
facilitate the programming of the frequencies to be
skipped due to resonances in the system.
The following process is to be carried out:
1.
MG18B302 - Rev. 2013-09-02
NOTICE
This parameter cannot be adjusted while the
motor is running. Missing Motor Phase
Function is always disabled with PM.
Select On, to display an alarm in the event of a
missing motor phase. Select Off, for no missing motor
phase alarm. However the On setting is strongly
recommended to avoid motor damage.
An alarm is displayed if a missing motor phase occurs.
Function:
[0 - 400 Some systems call for avoiding certain output
speeds due to resonance problems in the
system. Enter the lower limits of the speeds to
be avoided.
Function:
[0 - 400 Some systems call for avoiding certain output
speeds due to resonance problems in the
system. Enter the upper limits of the speeds
to be avoided.
Stop the motor.