VLT
®
8000 AQUA
The warning functions in parameters 221-228 are
not active during ramp-up after a start command,
ramp-down after a stop command or while stopped.
The warning functions are activated when the output
frequency has reached the resulting reference.
The signal outputs can be programmed to
generate a warning signal via terminal 42 or
45 and via the relay outputs.
The reference limits in parameter 226 Warning:
High reference, Ref
HIGH
, and in parameter 225
Warning: Low reference, Ref
LOW
, are only active
when remote reference has been selected.
In
Open loop
the unit for the reference is Hz,
while in Closed loop the unit is programmed in
parameter 415
Process units
.
Description of choice:
The upper signal limit, Ref
HIGH
, of the reference must
be programmed within the normal working range of the
AFD, provided parameter 100 Configuration has been
programmed for
Open loop
[0]. In
Closed loop
[1]
(parameter 100), Ref
HIGH
must be within the reference
range programmed in parameters 204 and 205.
227 Warning: Low feedback, FB
LOW
(WARN LOW FDBK)
Value:
-999,999.999 - FB
HIGH
(parameter 228)
✭
-999.999,999
Function:
If the feedback signal is below the limit, FB
LOW
,
programmed in this parameter, the display will
show a flashing FEEDBACK LOW.
The warning functions in parameters 221-228 are
not active during ramp-up after a start command,
ramp-down after a stop command or while
stopped. The warning functions are activated when
the output frequency has reached the selected
reference. The signal outputs can be programmed
to generate a warning signal via terminal 42 or
45 and via the relay outputs.
In
Closed loop
, the unit for the feedback is
programmed in parameter 415
Process units
.
Description of choice:
Set the required value within the feedback range
(parameter 413
Minimum feedback, FB
MIN
, and
414
Maximum feedback, FB
MAX
).
228 Warning: High feedback, FB
HIGH
(WARN. HIGH FDBK)
Value:
FB
LOW
(parameter 227) - 999,999.999
✭
999.999,999
Function:
If the feedback signal is above the limit, FB
HIGH
,
programmed in this parameter, the display will
show a flashing FEEDBACK HIGH.
The warning functions in parameters 221-228 are
not active during ramp-up after a start command,
ramp-down after a stop command or while stopped.
The warning functions are activated when the output
frequency has reached the selected reference.
The signal outputs can be programmed to
generate a warning signal via terminal 42 or
45 and via the relay outputs.
In
Closed loop
, the unit for the feedback is
programmed in parameter 415 Process units.
Description of choice:
Set the required value within the feedback range
(parameter 413
Minimum feedback, FB
MIN
, and
414
Maximum feedback, FB
MAX
).
229 Initial ramp
(INITIAL RAMP)
Value:
OFF/000.1s - 360.0 s
✭
OFF
Function:
Allows the motor/equipment to be brought up to
minimum speed (frequency) at a rate different than
the normal Ramp-Up rate (param. 206).
Description of choice:
As an example, vertical pumps and other equipment
often have a requirement to not operate below a
minimum speed any longer than necessary. Damage
and excessive wear can occur when operating below
minimum speed (frequency) for too long a period of
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.80.A7.22 - VLT is a registered Danfoss trademark
110
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
Page 116 of 208
