GEA ARIETE - Frequency Bypass, Bandwidth; Motor Phase Monitor

VLT
®
5000 Series
Description of choice:
Set the desired value.
229
229 Frequency bypass, bandwidth
(FREQ BYPASS B.W.)
Value:
0 (OFF) - 100%
✭ 0 (OFF) %
Function:
Some systems call for some output frequencies to
be avoided because of resonance problems in the
system.
In parameters 230-233 these output frequencies can
be programmed for bypassing (Frequency bypass).
In this parameter (229), a bandwidth can be defined
on either side of these frequency bypasses.
The frequency bypass function is not active if par.
002 is set to
Local and par. 013 is set to LCP ctrl/
Open loop or LCP+dig ctrl/Open loop.
Description of choice:
The bypass bandwidth is set as a percentage of the
bypass frequency which is selected in parameter
230-233.
The bypass bandwidth indicates max. variation of
the bypass frequency.
Example: A bypass frequency of 100 Hz and a by-
pass bandwidth of 1% are selected. In this case the
bypass frequency can vary between 99.5 Hz and
100.5 Hz i.e. 1% of 100 Hz.
230
230 Frequency bypass 1 (FREQ. BYPASS 1)
231
231 Frequency bypass 2 (FREQ. BYPASS 2)
232
232 Frequency bypass 3 (FREQ. BYPASS 3)
234
234 Frequency bypass 4 (FREQ. BYPASS 4)
Value:
0.0 - parameter 200
✭ 0.0 Hz
Function:
Some systems call for some output frequencies to
be avoided because of resonance problems in the
system.
Description of choice:
Enter the frequencies to be avoided.
See also parameter 229.
234
234 Motor phase monitor
(MOTOR PHASE MON)
Value:
✭Enable (ENABLE)
[0]
Disable (DISABLE)
[1]
Function:
In this parameter it is possible to select monitoring of
the motor phases.
Description of choice:
If Enable is selected, the frequency converter will re-
act on a missing motor phase which will result in
alarm 30, 31 or 32.
If Disable is selected, no alarm is given if a motor
phase is missing. The motor can be damaged/over-
heated if it runs on only two phases. It is therefore
recommended to keep the missing motor phase
function ENABLED.
✭ = factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A1.02 - VLT is a registered Danfoss trade mark
127
Programming