VLT
®
8000 AQUA
■
References and Limits 200-208
In this parameter group, the frequency and
reference range of the AFD are established. This
parameter group also includes:
-
Setting of ramp times
-
Choice of four preset references
-
Possibility of programming four bypass frequencies.
-
Setting of maximum current to motor.
-
Setting of warning limits for current, frequency,
reference and feedback.
201 Output frequency low limit, f
MIN
(MIN. FREQUENCY)
Value:
0.0 - f
MAX
✭
0.0 HZ
Function:
This is where to select the minimum output frequency.
Description of choice:
A value from 0.0 Hz to the
Output frequency high limit,
f
MAX
frequency set in parameter 202 can be selected.
202 Output frequency high limit, f
MAX
(MAX. FREQUENCY)
Value:
f
MIN
- 120 Hz
(par. 200
Output frequency range
)
✭
60 Hz/
50 Hz
) Global factory setting different from North
American factory setting.)
Function:
In this parameter, a maximum output frequency
can be selected that corresponds to the highest
speed at which the motor can be.
NOTE
The output frequency of the AFD can never
assume a value higher than 1/10 of the switching
frequency (parameter 407
Switching frequency
).
Description of choice:
A value from f
MIN
to the choice made in parameter
200
Output frequency range
can be selected.
■
Reference handling
Reference handling is shown in the block
diagram underneath.
The block diagram shows how a change in a
parameter can affect the resulting reference.
Parameters 203 to 205
Reference handling, minimum
and maximum
reference and parameter 210
Reference
type
define the way reference handling can be
carried out. The mentioned parameters are active
both in a closed and in an open loop.
Remote references are defined as:
•
External references, such as analog inputs 53,
54 and 60, pulse reference via terminal 17/29
and reference from serial communication.
•
Preset references.
The resulting reference can be shown in the display by
selecting
Reference
[%] in parameters 007-010
Display
readout
and in the form of a unit by selecting Resulting
reference [unit]. See the section on
Feedback
handling
in connection with a closed loop.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.80.A7.22 - VLT is a registered Danfoss trademark
102
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
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