Danfoss VLT AutomationDrive FC 360 Design Manual page 29

Product Overview
Case 1: Positive reference with dead band, digital input to trigger reverse, part I
Illustration 2.22 shows how reference input with limits inside minimum to maximum limits clamps.
General Reference
parameters:
Reference Range: Min - Max
Minimum Reference: 0 Hz (0,0%)
Maximum Reference: 20 Hz (100,0%)
Analog input 53
Low reference 0 Hz
High reference 20 Hz
Low voltage 1 V
Ext. Reference
High voltage 10 V
Absolute
0 Hz 1 V
Ext. source 1
20 Hz 10V
Range:
0.0% (0 Hz)
100.0% (20 Hz)
Hz
20
Digital input 19
Digital input Low No reversing
High Reversing
Illustration 2.22 Clamping of Reference Input with Limits inside Minimum to Maximum
MG06B402
Design Guide
Limited to: -200%- +200%
(-40 Hz- +40 Hz)
Ext. reference
+
Range:
0.0% (0 Hz)
100.0% (20 Hz)
Reference is scaled
according to min
max reference giving a
speed.!!!
V
10
1
Limits Speed Setpoint
according to min max speed.!!!
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General Motor
parameters:
Motor speed direction:Both directions
Motor speed Low limit: 0 Hz
Motor speed high limit: 8 Hz
Reference
Limited to:
algorithm
0%- +100%
(0 Hz- +20 Hz)
Reference
Range:
0.0% (0 Hz)
100.0% (20 Hz)
Dead band
Scale to Hz
20
speed
1
Speed
setpoint
Range:
-20
-20 Hz
+20 Hz
Motor PID
Range:
Motor
-8 Hz
control
+8 Hz
V
10
Motor
27
2 2