Parameterization and Configuration
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Page 126 of 167
TR - ELA - BA - DGB - 0027 - 03
11/12/2019
6.3.3.17 Velocity measuring unit
Alternatively, this parameter can also be set during operation via acyclic parameter access to the
speed normalization function
PNU 60001
, see page 139.
Selection
Value Description
Default
Steps/sec
0
The speed in the signals
NIST_A
and
NIST_B
is
output in
steps per second
.
Steps/100 msec
1
The speed in the signals
NIST_A
and
NIST_B
is
output in
steps per 100 ms
.
Steps/10 msec
2
The speed in the signals
NIST_A
and
NIST_B
is
output in
steps per 10 ms
.
mm/s (rpm)
3
The speed in the signals
NIST_A
and
NIST_B
is
output in
millimeters per second
.
X
N2/N4 normalization
4
The speed in the signals
NIST_A
and
NIST_B
is
output in accordance with N2/N4 normalization,
declared in the PROFIdrive drive profile. The speed
actual value in the signals
NIST_A
and
NIST_B
is
a percentage of the parameter
Velocity
reference value N2/N4
.
6.3.3.18 Velocity reference value N2/N4
Alternatively, this parameter can also be set during operation via acyclic parameter access to the
velocity reference value function
PNU 60000
, see page 139.
If the setting
N2/N4 normalization
(4) has already been made under the
Velocity measuring
unit
parameter, the output speed actual value in the signals
NIST_A
and
NIST_B
is a percentage
of the velocity reference value specified here.
The input is made in [m/min], and the default setting = 120 m/min = 100 %.
Data type
Float32
Limit values
application-specific
Default
120 m/min
Definitions in relation to N2/N4 normalization:
•
Signal
NIST_A
corresponds to N2 normalization
•
Signal
NIST_B
corresponds to N4 normalization
•
0 % = 0x0
•
N2: 100 % of the velocity reference value = 0x4000 (2
14
), resolution: 2
–14
* 100 %
•
N4: 100 % of the velocity reference value = 0x4000 0000 (2
30
), resolution: 2
–30
* 100 %
•
Value range: -200 % up to +200 %
•
MSB = 1: negative sign
•
MSB = 0: positive sign
