3.3 Reference Handling
Local Reference
The local reference is active when the drive is operated with ‘Hand On’ bottom active. Adjust the reference by up/down and left/right arrows respectively.
Remote Reference
The reference handling system for calculating the Remote reference is shown in the illustration below.
!"
#
$
%
&'&()
*+$#
,,
-
./012
33
.4 33
The Remote Reference is calculated once every scan interval and initially consists of two types of reference inputs:
1.
X (the external reference) : A sum (see par. F-54
Reference Function
) of up to four externally selected references, comprising any combination (determined
by the setting of par. F-01
Frequency Setting 1
, par. C-30
Frequency Command 2
and par. C-34
Frequency Command 3
) of a fixed preset reference
(par. C-05
Multi-step Frequency 1 - 8
), variable analog references, variable digital pulse references, and various serial bus references in whatever unit
the frequency converter is controlled ([Hz], [RPM], [Nm] etc.).
2.
Y- (the relative reference): A sum of one fixed preset reference (par. F-64
Preset Relative Reference
) and one variable analog reference (par. F-68
Relative
Scaling Reference Resource
) in [%].
The two types of reference inputs are combined in the following formula: Remote reference = X + X * Y / 100%. If relative reference is not used par. F-68 must be
set to
No function
and par. F-64 to
0%
. The
catch up / slow down
function and the
freeze reference
function can both be activated by digital inputs on the
frequency converter. The functions and parameters are described in the Programming Guide, DET-618
The scaling of analog references are described in par. groups AN-1# and AN-2#, and the scaling of digital pulse references are described in par. group E-6#.
Reference limits and ranges are set in par. group F-5#.
AF-650 GP Design Guide
22
3
Summary of Contents for AF-650 GP Series
Page 5: ...AF 650 GP Design Guide 4 1...
Page 53: ...AF 650 GP Design Guide 52 4...
Page 97: ...Please note airflow directions 6 1 5 Mechanical Dimensions AF 650 GP Design Guide 96 6...
Page 98: ...Please note airflow directions AF 650 GP Design Guide 97 6...
Page 99: ...Please note airflow directions AF 650 GP Design Guide 98 6...
Page 100: ...Please note airflow directions AF 650 GP Design Guide 99 6...
Page 173: ...Max cable length 150 m AF 650 GP Design Guide 172 9...
Page 179: ...AF 650 GP Design Guide 178 9...