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 reference value
Parameter 6-14
Terminal 53
Low Ref./Feedb.
Value
Parameter 6-14 T
erminal 53 Low
Ref./Feedb. Value
Parameter 6-24
Terminal 54
Low Ref./Feedb.
Value
Parameter 6-24 T
erminal 54 Low
Ref./Feedb. Value
Parameter 5-52
Term. 29 Low
Ref./Feedb. Value
Parameter 5-57 Term.
33 Low Ref./Feedb.
Value
Minimum input value
Parameter 6-10
Terminal 53
Low Voltage
[V]
Parameter 6-12 T
erminal 53 Low
Current
[mA]
Parameter 6-20
Terminal 54
Low Voltage
[V]
Parameter 6-22 T
erminal 54 Low
Current
[mA]
Parameter 5-50
Term. 29 Low
Frequency
[Hz]
Parameter 5-55 Term.
33 Low Frequency
[Hz]
P2 =(Maximum input value, maximum reference value)
Maximum reference value
Parameter 6-15
Terminal 53
High Ref./
Feedb. Value
Parameter 6-15 T
erminal 53 High
Ref./Feedb. Value
Parameter 6-25
Terminal 54
High Ref./
Feedb. Value
Parameter 6-25 T
erminal 54 High
Ref./Feedb. Value
Parameter 5-53
Term. 29 High
Ref./Feedb. Value
Parameter 5-58 Term.
33 High Ref./Feedb.
Value
Maximum input value
Parameter 6-11
Terminal 53
High Voltage
[V]
Parameter 6-13 T
erminal 53 High
Current
[mA]
Parameter 6-21
Terminal 54
High Voltage
[V]
Parameter 6-23 T
erminal 54 High
Current
[mA]
Parameter 5-51
Term. 29 High
Frequency
[Hz]
Parameter 5-56 Term.
33 High Frequency
[Hz]
Table 15.1 P1 and P2 Parameters
15.4 Dead Band Around Zero
Sometimes the reference and, in rare instances, the feedback needs a dead band around zero. The dead band is used to
ensure that the machine is stopped when the reference is near 0).
To make the dead band active and to set the amount of dead band, apply the following settings:
•
Minimum reference value (see
for relevant parameter) or maximum reference value must be 0o. In other
words; Either P1 or P2 must be on the X-axis in
.
•
Both points defining the scaling graph must be in the same quadrant.
P1 or P2 defines the size of the dead band. See
(RPM)
Resource output
Resource
input
Quadrant 2
Quadrant 3
Quadrant 1
Quadrant 4
Terminal X
low
Terminal X
high
Low reference/feedback
value
High reference/feedback
value
-1
1
130BA179.10
-1500
-6
6
(V)
1500
-10
10
P1
P2
0
Illustration 15.7 Dead Band
(RPM)
Resource output
Resource
input
Quadrant 2
Quadrant 3
Quadrant 1
Quadrant 4
Terminal X
low
Terminal X
high
Low reference/feedback
value
High reference/feedback
value
-1
1
130BA180.10
-1500
-6
6
(V)
1500
-10
10
P1
P2 0
Illustration 15.8 Reverse Dead Band
Thus a reference endpoint of P1=(0 V, 0 RPM) does not result in any dead band, but a reference endpoint of P1=(1 V, 0
RPM), results in a -1 V to +1 V dead band if the P2 endpoint is placed in either Quadrant 1 or Quadrant 4.
Handling of References
Design Guide
MG37N102
Danfoss A/S © 6/2016 All rights reserved.
139
15
15
Summary of Contents for VLT 380-500 V
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