nx interface
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7
7.7
Drive Monitoring
Several drive actual values/parameters can be monitored by using manufacturer specific PDOs.
nx_speed_reference
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSB
LSB
This is the reference 1 to the frequency converter. Used normally as Speed reference.
The allowed scaling is 0..10000. In the application, the value is scaled in percentage of the frequency
area between set minimum and maximum frequency.
nx_status_word, used only with ByPass 2 mode. When ByPass mode is used, check more detailed Status
Word in the application manual
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
UVFS
DDIR
TCSPDL
FR
Z
AREF
W
FLT
DIR
RUN
RDY
Information about the status of the device and messages is indicated in the
Status word
. The
Status
word
is composed of 16 bits that have the following meanings:
Bit
Description
Value = 0
Value = 1
0
Not Ready
Ready
1
STOP
RUN
2
Clockwise
Counterclockwise
3
-
Faulted
4
-
Warning
5
Ref. frequency not reached
Ref. Frequency reached
6
-
Motor is running at zero speed
7
Flux Ready
Flux Not Ready
8
TC Speed Limit Active (depends on drive
model)
TC Speed Limit Not Active (depends on
drive model)
9
Detected Encoder Direction Clockwise
(depends on drive model)
Encoder Direction Counterclockwise
(depends on drive model)
10
UV Fast Stop Active (depends on drive
model)
UV Fast Stop Not Active (depends on drive
model)
11...15
Not In use
Not In use
Table 7-4. Status word bit descriptions
Processdata_out1 … Processdata_out6
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSB
LSB
These are application specific process data. See APPENDIX C for content of these process data in
different applications.
