Control Techniques Unidrive 1 Series User Manual page 76

Safety Product Mechanical
Information Information Installation
Figure 6-5 Action of skip frequency/speed 1 and skip band 1
When the frequency/speed (input) reference ascends into a skip band,
the resulting (output) reference remains at the lower edge of the band
until the input reference has reached the upper edge of the band. The
output reference then jumps to the value of the input reference.
When the frequency/speed (input) reference descends into a skip band,
the resulting (output) reference jumps immediately to the lower edge of
the band.
Example
Skip speed 1 = 250rpm
Enter 250 in Pr 0.20
Required skip band = 60rpm
Enter 30 in Pr 0.21
(Skip band = 2 x Value of skip-band parameter.)
6.2.9 Analog input modes
0.24 {7.06} Analog input 1 mode selector
0.25 {7.11} Analog input 2 mode selector
RW Txt
0 to 8
Set the required mode as follows:
Setting Input signal
VOLt (0) ±10V
0-20 (1) 0 to 20mA
20-0 (2) 20mA to 0
4-20.tr (3) 4mA to 20mA
20-4.tr (4) 20mA to 4mA
4-20.Lo (5) 4mA to 20mA
20-4.Lo (6) 20mA to 4mA
4-20.Pr (7) 4mA to 20mA
20-4.Pr (8) 20mA to 4mA
0.26 {7.14} Analog input 2 destination parameter
RW Txt
Pr 0.00 to Pr 21.50 (Menu param.)
A signal applied to an input terminal is converted into a value which is
applied to a parameter. The function of this parameter determines the
function of the terminal.
By default, terminal 7 (Analog input 2) is assigned to Pr 1.37 Analog
reference 2. Use Pr 0.26 to change the function of terminal 7.
76
Electrical Getting
Menu 0
Installation Started
R
VOLt (0)
When current signal ≤ 3mA...
Signal treated as zero
Signal treated as zero
Drive trips
Drive trips
Drive runs at minimum or low speed
Drive runs at minimum or low speed
Drive runs at previous speed
Drive runs at previous speed
R P
Pr 1.37
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Running
Optimisation Macros
the motor
6.2.10 Miscellaneous
0.27 {8.27} EUR> Positive logic select
RW Bit
0 or 1
European configuration
Use Pr 0.27 (Pr 8.27) to select the logic polarity of the digital inputs, as
follows:
0 Negative logic
1 Positive logic
0.27 {6.04} USA> Sequencing mode selector
RW Uni
0 to 4
Refer to Pr 6.04 in the Unidrive Advanced User Guide.
0.28 {4.13} EUR> Current-loop proportional gain
RW Uni
OL 0 to 30000
VT> 0 to 30,000
CL
SV> 0 to 30,000
0.29 {4.14} EUR> Current-loop integral gain
RW Uni
OL
0 to 30,000
VT> 0 to 30,000
CL
SV> 0 to 30,000
European configuration
The values of Pr 0.28 and Pr 0.29 affect the dynamic performance of the
drive in the following conditions:
• Current-limit in frequency/speed control
• Torque control
• Braking when Pr 0.15 Ramp mode selector is set at Stnd.Ct
(default)
• Synchronizing the drive to a spinning motor (Pr 0.39 set at 1)
• Loss of AC supply when Pr 6.03 AC supply loss mode selector is set
at ridE.th.
For information on adjusting these parameters, refer to Pr 4.13 and Pr
4.14 in the Unidrive Advanced User Guide.
0.28 {1.01} USA> Frequency/speed demand
RO Bi
OL ±1,000Hz
CL ±30,000rpm
USA configuration
Pr 0.28 differs from Pr 0.11 Pre-ramp reference in that it indicates the
demanded reference before frequency/speed limiting and skip bands.
0.29 {8.23} USA> Terminal-29 destination parameter
RW Uni
Pr 0.00 to Pr 20.50 (Menu param.)
USA configuration
Use Pr 0.29 to change the function of the digital input on terminal 29.
The default setting (Pr 1.41) gives LOCAL/REMOTE switching.
Advanced Technical
Diagnostics
Parameters Data
R
0
4
20
150
130
40
2000
1200
R
Pr 1.41
Unidrive User Guide
Issue Number: 9
UL Listing
Information
P
P
P