Danfoss VLT 380-500 V Design Manual page 142

Handling of References
Case 1. This case shows how reference input with limits inside minimum to maximum limits clamps.
Ext. Reference
Absolute
0 RPM 1 V
500 RPM 10 V
Digital input
Illustration 15.9 Positive Reference with Dead Band, Digital Input to Trigger Reverse
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140
®
VLT Parallel Drive Modules
General Reference
parameters:
Reference Range: Min - Max
Minimum Reference: 0 RPM (0,0%)
Maximum Reference: 500 RPM (100,0%)
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) Reference is scaled
according to min max
100,0% (500 RPM)
RPM
500
V
10
1
Digital input 19
Low No reversing
High Reversing
Limits Speed Setpoint
according to min max speed
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General Motor
parameters:
Limited to: -200%- +200%
Motor speed direction: Both directions
(-1000 RPM- +1000 RPM)
Motor speed Low limit: 0 RPM
Motor speed high limit: 200 RPM
Ext. reference
Reference
Range: algorithm
0,0% (0 RPM)
100,0% (500 RPM)
Reference
Range:
0,0% (0 RPM)
100,0% (500 RPM)
reference giving a speed
Scale to
speed
Speed
setpoint
Range:
-500 RPM
+500 RPM
Motor PID
Motor
control
Limited to:
0%- +100%
(0 RPM- +500 RPM)
Dead band
RPM
500
V
10
1
-500
Range:
Motor
-200 RPM
+200 RPM
MG37N102