Danfoss VLT Micro Drive FC 51 Series Programming Manual page 27

4. Parameter Descriptions
3-11 Jog Speed [Hz]
Range:
4
5.0 Hz [0.0 - 400.0 Hz]
3-12 Catch Up/Slow Down Value
Range:
*
0% [0 - 100%]
3-14 Preset Relative Reference
Range:
0.00% [-100.00 - 100.00%]
3-15 Reference 1 Source
Option:
[0] No Function
Analog Input 53
*
[1]
[2] Analog Input 60
[8] Pulse input 33
[11] Local Bus Reference
[21] LCP Potentiometer
3-16 Reference 2 Source
Option:
[0] No Function
[1] Analog Input 53
26
However, there are exceptions if par. 3-00 is set to
Example 1:
Par. 3-02 is set to 20 and par. 3-03 is set to 50. In this case 0% = 0 and 100% = 50.
Example 2:
Par. 3-02 is set to -70 and par. 3-03 is set to 50. In this case 0% = 0 and 100% = 70.
Function:
Jog speed is a fixed output speed and overrules the selected reference speed, see par. 5-1* selection [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 configuration.
Select speed to function as jog speed.
Function:
Catch-up/Slowdown function
The is activated by an input command (see par. 5-1*, choice [28]/[29]). If the
command is active, the Catch-up/Slowdown value (in %) is added to the reference function as follows:
Reference Reference Reference
= +
Reference = Reference Reference
When the input command is inactivated, the reference returns to its original value ie. Reference = Reference +
0.
Function:
Define fixed value in % to be added to variable value defined in par. 3-18,
The sum of fixed and variable values (labelled Y in illustration below) is multiplied with actual reference (labelled
X in illustation). This product is added to actual reference
Function:
Par. 3-15, 3-16 and 3-17 define up to three different reference signals. The sum of these reference signals
defines the actual reference.
No reference signal is defined.
Use signals from analog input 53 as reference, see par. 6-1*.
Use signals from analog input 60 as reference, see par. 6-2*.
Use signals from pulse input as reference, see par. 5-5*.
Use signals from local bus as reference, see par. 8-9*.
Use signals from LCP potentiometer as reference, see par. 6-8*.
Function:
See Par. 3-15 for description.
No reference signal is defined.
Use signals from analog input 53 as reference.
MG.02.C4.02 - VLT is a registered Danfoss trademark
VLT Micro Drive FC 51
Min - Max , [0].
Catchup Slowdown
×
100
Catchup Slowdown
×
100
Relative Scaling Reference Source
Y
X + X ×
100
.