Danfoss VLT PROFIBUS DP MCA 101 User Manual

The nal speed limit is set in parameter 4-19 Max Output
Frequency.
Table 4.3 lists the reference (MRV) and the feedback (MAV)
formats.
MRV/MAV Integer in hex Integer in decimal
100% 4000 16384
75% 3000 12288
50% 2000 8192
25% 1000 4096
0% 0 0
-25% F000 -4096
-50% E000 -8192
-75% D000 -12288
-100% C000 -16384
Table 4.3 Reference/Feedback (MRV/MAV) Format
NOTICE
Negative numbers are formed as complement of 2.
NOTICE
The data type for MRV and MAV is an N2 16-bit
standardized value, expressing a range from -200% to
+200% (8001 to 7FFF).
Example
The following settings determine the speed, as shown in
Table 4.4:
•
Parameter 1-00 Conguration Mode set to [0]
Speed open loop.
•
Parameter 3-00 Reference Range set to [0] Min-Max.
•
Parameter 3-02 Minimum Reference set to 100
RPM.
•
Parameter 3-03 Maximum Reference set to 3000
RPM.
MRV/MAV Actual speed [RPM]
0% 0 hex 100
25% 1000 hex 825
50% 2000 hex 1550
75% 3000 hex 2275
100% 4000 hex 3000
Table 4.4 Actual Speed for MRV/MAV
4.2.4 Process Control Operation
In process control operation, parameter 1-00 Conguration
Mode is set to [3] Process.
The reference range in parameter 3-00 Reference Range is
always [0] Min - Max.
•
MRV is the process setpoint.
•
MAV expresses the actual process feedback (range
±200%).
4.2.5 Inuence of the Digital Input
Terminals on FC Control Mode
In parameter 8-50 Coasting Select to parameter 8-56 Preset
Reference Select, set the inuence of the digital input
terminals on the control of the frequency converter.
NOTICE
The setting of parameter 8-01 Control Site overrules the
settings in parameter 8-50 Coasting Select to
parameter 8-56 Preset Reference Select. The setting of
terminal 37 coast stop (safe) overrules any other
parameter.
Program each of the digital input signals to logic AND,
logic OR, or to have no relation to the corresponding bit in
the control word. In this way, the following signal sources
initiate a specic control command, for example stop/
coast:
•
Fieldbus only.
•
Fieldbus AND digital input.
•
Either eldbus OR digital input terminal.
NOTICE
To control the frequency converter via PROFIBUS, set
parameter 8-50 Coasting Select to either [1] Bus or [2]
Logic AND. Then set parameter 8-01 Control Site to [0]
Digital and ctrl.word or [2] Controlword only.
For more detailed information and examples of logical
relationship options, see chapter 8 Troubleshooting.
4.3
Control Prole
Control the frequency converter according to:
•
The PROFIdrive prole, see chapter 4.4 PROFIdrive
Control Prole, or
•
The Danfoss FC control, see chapter 4.5 Danfoss
FC Control Prole.
Select the control prole in parameter 8-10 Control Word
Prole. The choice of prole aects the control word and
status word only.
Chapter 4.4 PROFIdrive Control Prole and
chapter 4.5 Danfoss FC Control Prole provide a detailed
description of control and status data.
Control
VLT
®
PROFIBUS DP MCA 101
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Danfoss VLT PROFIBUS DP MCA 101 Specifications

General

Brand	Danfoss
Model	VLT PROFIBUS DP MCA 101
Category	Media Converter
Language	English