How To Control The Adjustable Frequency Drive - Danfoss VLT HVAC Drive FC 102 Design Manual

Installation and Set-up
Coil
33
34
35
36
37
38
39
40
41
42
43
44
45
46
7 7
47
48
Adjustable frequency drive status word (FC profile)
Table 7.17 Coil Descriptions
Register Number
00001-00006
00007
00008
00009
00010-00990
01000-01990
02000-02990
03000-03990
04000-04990
...
49000-49990
50000
50010
...
50200
50210
Table 7.18 Holding Registers
* Used to specify the index number to be used when accessing an indexed parameter.

7.8.9 How to Control the Adjustable Frequency Drive

This section describes codes that can be used in the function and data fields of a Modbus RTU message.
194
Design Guide
0
Control not ready
Adjustable frequency drive not ready
Coasting stop
No alarm
Not used
Not used
Not used
No warning
Not at reference
Hand mode
Out of freq. range
Stopped
Not used
No voltage warning
Not in current limit
No thermal warning
Description
Reserved
Last error code from an FC data object interface
Reserved
Parameter index*
000 parameter group (parameters 001 through 099)
100 parameter group (parameters 100 through 199)
200 parameter group (parameters 200 through 299)
300 parameter group (parameters 300 through 399)
400 parameter group (parameters 400 through 499)
...
4900 parameter group (parameters 4900 through 4999)
Input data: adjustable frequency drive control word register (CTW).
Input data: Bus reference register (REF).
...
Output data: adjustable frequency drive status word register (STW).
Output data: adjustable frequency drive main actual value register (MAV).
Danfoss A/S © Rev. 2014-01-13 All rights reserved.
1
Control ready
Adjustable frequency drive ready
Safety closed
Alarm
Not used
Not used
Not used
Warning
At reference
Auto mode
In frequency range
Running
Not used
Voltage warning
Current limit
Thermal warning
MG16C122