Case 1.
This case shows how reference input with limits inside minimum to maximum limits clamps.
500
1
10
V
V
500
1
10
-500
130BA187.12
+
Analog input 53
Low reference 0 RPM
High reference 500 RPM
Low voltage 1 V
High voltage 10 V
Ext. source 1
Range:
0,0% (0 RPM)
100,0% (500 RPM)
100,0% (500 RPM)
Ext. reference
Range:
0,0% (0 RPM)
500 RPM 10 V
Ext. Reference
Absolute
0 RPM 1 V
Reference
algorithm
Reference
100,0% (500 RPM)
0,0% (0 RPM)
Range:
Limited to:
0%- +100%
(0 RPM- +500 RPM)
Limited to: -200%- +200%
(-1000 RPM- +1000 RPM)
Reference is scaled
according to min max
reference giving a speed
Scale to
speed
+500 RPM
-500 RPM
Range:
Speed
setpoint
Motor
control
Range:
-200 RPM
+200 RPM
Motor
Digital input 19
Low No reversing
High Reversing
Limits Speed Setpoint
according to min max speed
Motor PID
RPM
RPM
Dead band
Digital input
General Reference
parameters:
Reference Range: Min - Max
Minimum Reference: 0 RPM (0,0%)
Maximum Reference: 500 RPM (100,0%)
General Motor
parameters:
Motor speed direction: Both directions
Motor speed Low limit: 0 RPM
Motor speed high limit: 200 RPM
Illustration 15.9 Positive Reference with Dead Band, Digital Input to Trigger Reverse
Handling of References
VLT
®
Parallel Drive Modules
140
Danfoss A/S © 6/2016 All rights reserved.
MG37N102
15
15
Summary of Contents for VLT 380-500 V
Page 2: ......
