NORD Drivesystems BU0220 User Manual
Page 71
BU 0220 GB-0912
Subject to technical amendments
71
7.2.3.2 Parameter index Sub-index (IND)
1
2
3
4
PKE
IND
PWE1
PWE2
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
P1-P4
No information / all 0
Array 1-64
P1-P4
Sub-index
The structure and function of the parameter index (IND) depends on the type of parameter to be transferred.
For values which depend on the parameter set, the parameter set can be selected via Bits 8 and 9 of the Index
(IND) (0 = parameter set 1, 1 = parameter set 2, ...).
If the parameter to be processed is also an array parameter (e.g. position array for the PosiCon option), then
the sub-index of the required parameter can additionally be accessed via Bit 10 to Bit 15 of the sub-index
(0 = array element 1, 1 = array element 2,
…):
Array element
Parameter set
Index
5 (000101
BIN
)
2 (01
BIN
)
15
HEX
= 0001 0101
BIN
21 (010101
BIN
)
4 (11
BIN
)
57
HEX
= 0101 0111
BIN
If a paramenter is not dependent on the parameter set, then Bit 8 -15 are used for the sub-index.
The structure of individual parameters and the values which can be called up via the sub-indices can be found in
Section 5 "Parameterisation" of this supplementary manual or in the relevant section of the inverter manual.
For the use of sub-indices, one of the numbers 6, 7, 8 or 11, 12 must be used as the order label (see
previous section), in order to be effective.
7.2.3.3 Parameter value (PWE)
The transfer of the parameter value (PWE) is made in PPO types 1 and 2 and always as a word (16 bit) or
double word (32 bit) according to the parameter. Only one parameter value can be transferred in a telegram.
Only one parameter value can be transferred in a telegram.
A 32 bit parameter value comprises of PWE1 (higher value word) and PWE2 (lower value word). A 16 Bit
parameter value is transferred in PWE2. For negative values the high word must be set to FFFF
hex
.
The parameter value is transferred as an integer value. For parameters with resolutions 0.1 or 0.01 the
parameter value must be multiplied by the inverse of the resolution.
Example:
A run-up time of 99.99 seconds is to be set.
99.99s
99.99 * 1 / 0.01 = 99.99 * 100 = 9999
Therefore the value 9999
dec
= 270F
hex
is to be transferred.
NOTE
32 Bit parameter values are only used with the posicon option. All relevant parameters are
described in the additional posicon instruction manual.