Danfoss FC 300 Design Guide

FC 300 Design Guide
Introduction to FC 300
Analog 53
S201=OFF
Analog 53
S201=ON
Analog 54
S202=OFF
Analog 54
S202=ON
Pulse Input
29
Pulse Input
33
P1 = (Minimum input value, Minimum reference value)
Minimum referenc e value Par. 6-14 Par. 6-14 Par. 6-24 Par. 6-24 Par. 5-52 Par. 5-57
Minimum inpu t value Par. 6-10
[V]
Par. 6-12
[mA]
Par. 6-20
[V]
Par. 6-22
[mA]
Par. 5-50
[Hz]
Par. 5-55
[Hz]
P2 = (Maximu m input value, Maximum referen ce value)
Maximum reference value Par. 6-15 Par. 6-15 Par. 6-25 Par. 6-25 Par. 5-53 Par. 5-58
Maximum input value Par. 6-11
[V]
Par. 6-13
[mA]
Par. 6-21
[V]
Par. 6-23
[mA]
Par. 5-51
[Hz]
Par. 5-56
[Hz]
In some cases, the reference (in rare cases also the feedback) should have a Dead Band around zero
(i.e. to make sure the machine is stopped when the reference is "near zero"). To make the dead band
active and to set the amount of dead band, the
following settings must be done:
• Either M inimu m Reference Value (see table above for re levant parameter) or Maximum Reference Value
must b e zero. In other words; Either P1 or P2 must b e on the X-axis in the graph below.
• And both points defining the scaling
graph are in the same quadrant.
The size of the Dead Band is defined b
y either P1 or P2 as shown in the graph below.
Thus a reference endpoint of P1 = (0 V, 0 RPM) will not result in any dead band, but a reference
endpoint of e.g. P1 = (1V, 0 RPM) will result in a -1V to +1V dead band in this case provided
that the end point P2 is placed in either Quadrant 1 or Quadrant 4.
27
MG.33.B6.22 - VLT is a registered Danfoss trademark

Danfoss FC 300 Specifications

General

Brand	Danfoss
Model	FC 300
Category	DC Drives
Language	English