Danfoss VLT Micro Drive FC 51 Design Manual page 67

Programming
3-03 Maximum Reference
Range:
50.00 [-4999-4999] Enter value for Maximum Reference.
*
3-41 Ramp1 Ramp-up Time
Range:
Size
related
*
7 7
3-42 Ramp1 Ramp-down Time
Range:
Size [0.05-3600.00
related s]
*
7.4.2 Quick Menu Parameters - PI Basic
Settings QM2
The following is a brief description of the parameters for
the PI Basic Settings. For a more detailed description, see
®
VLT Micro Drive Programming Guide, MG02C.
1-00 Configuration Mode
Option:
[0 ] Speed
*
Open Loop
66
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Function:
Maximum Reference is adjustable in the
range Minimum Reference -4999.
The sum of all internal and external
references are clamped (limited) to the
maximum reference value, 3-03 Maximum
Reference.
Function:
[0.05-3600.00 s] Enter ramp-up time from 0 Hz to
rated motor frequency (f
in 1-23 Motor Frequency.
Choose a ramp-up time ensuring
that torque limit is not exceeded,
see 4-16 Torque Limit in Motor
Mode.
Function:
Enter ramp down time from rated
motor frequency (f
Motor Frequency to 0 Hz.
Choose a ramp down time that
does not cause over-voltage in
inverter due to regenerative
operation of motor. Furthermore,
regenerative torque must not
exceed limit set in 4-17 Torque
Limit in Generator Mode.
Function:
Use this parameter for selecting the
application control principle to be used when
a Remote Reference is active.
NOTE
Changing this parameter will reset 3-00
Reference Range, 3-02 Minimum Reference
and 3-03 Maximum Reference to their
default values.
NOTE
This parameter cannot be adjusted
while motor runs.
For normal speed control (References).
MG02K202 - VLT
®
VLT Micro Drive FC 51 Design Guide
1-00 Configuration Mode
Option:
[3] Process
Closed
Loop
3-02 Minimum Reference
Range:
0.00
*
) set
M,N
3-03 Maximum Reference
Range:
50.00
*
) in 1-23
M,N
3-10 Preset Reference
Option:
[0.00]
*
®
is a registered Danfoss trademark
Function:
Enables process closed loop control. See
parameter group 7-3* Process PI Control for
further information on PI-controller.
Function:
[-4999-4999] Enter value for minimum reference.
The sum of all internal and external
references are clamped (limited) to the
minimum reference value, 3-02 Minimum
Reference.
Function:
Maximum Reference is adjustable in the
range Minimum Reference -4999.
[-4999-4999] Enter value for Maximum Reference.
The sum of all internal and external
references are clamped (limited) to the
maximum reference value, 3-03 Maximum
Reference.
Function:
Each parameter set-up contains 8 preset
references which are selectable via 3
digital inputs or bus.
[18] [17]
Bit2 Bit1
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
Table 7.1 Parameter Group 5-1* Digital
Inputs Option [16], [17] and [18]
-100.00-100.00% Enter the different preset references
using array programming.
Normally, 100%=value set in 3-03
Maximum Reference.
However, there are exceptions if 3-00
Reference Range is set to [0] Min - Max.
Example 1:
3-02 Minimum Reference is set to 20 and
3-03 Maximum Reference is set to 50. In
this case 0%=0 and 100%=50.
Example 2:
[16] [16]
Bit0 Bit0
0 0
1 1
0 2
1 3
0 4
1 5
0 6
1 7