Parameter Group 3: Reference/Ramps - Danfoss VLT Micro Drive FC 51 Programming Manual

Parameter Descriptions ®
VLT Micro Drive FC 51 Programming Guide

4.4 Parameter Group 3: Reference/Ramps

4.4.1 3-** Reference/Ramps
Parameters for reference handling, definition of limitations,
and configuration of the frequency converter's reaction to
changes
4.4.2 3-0* Reference Limits
Parameters for setting the reference unit, limits and ranges.
3-00 Reference Range
Option: Function:
Select the range of reference and feedback
signals.
[0] Min to Reference setpoint ranges can have positive
*
Max values only.
Select this if running in Process Closed Loop.
[1] -Max to Ranges can have both positive and negative
+Max values.
If potentiometer is used to adjust motor running
in both direction, set reference range to –Max
Reference to Max Reference by par.=[1] Choose
hand on mode by LCP. Adjust the potentiometer
to minimum, the motor can run in anti-clockwise
with max speed. Then adjust the potentiometer
to maximum, the motor will ramp down to 0
and run clockwise with max speed.
3-02 Minimum Reference
Range: Function:
0.00 [-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.
3-03 Maximum Reference
Range: Function:
Maximum Reference is adjustable in the
range Minimum Reference -4999.
50.00 [-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.
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4.4.3 3-1* References
Parameters for setting up the reference sources. Select the
preset references for the corresponding digital inputs in
parameter group, 5-1* Digital Inputs.
3-10 Preset Reference
Option: Function:
Each parameter set-up contains 8 preset
references which are selectable via 3
digital inputs or bus.
[18] [17] [16] [16]
Bit2 Bit1 Bit0 Bit0
0 0 0 0
0 0 1 1
0 1 0 2
0 1 1 3
1 0 0 4
1 0 1 5
1 1 0 6
1 1 1 7
Table 4.2 Parameter Group 5-1* Digital
Inputs Option [16], [17] and [18]
[0.00] -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:
3-02 Minimum Reference is set to -70
and 3-03 Maximum Reference is set to
50. In this case 0%=0 and 100%=70.
3-11 Jog Speed [Hz]
Range: Function:
Jog speed is a fixed output speed and
overrules the selected reference speed, see
parameter group 5-1* Digital Inputs option
[14].
If the motor is stopped while in jog mode,
the jog signal acts as a start signal.
Removing the jog signal makes the motor
run according to the selected configu-
ration.
5.0 [0.0-400.0 Select speed to function as jog speed.
Hz Hz]
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