Siemens SIWAREX WP251, Руководство пользователя

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Scale parameters and functions
8.23 DR 24 Controller and filter parameters
SIWAREX WP251
Manual, 12/2015, A5E37203357A
121
When the coarse signal is shut off, this may produce an overshoot that can be higher than
the fine shut-off point, which would cause the fine signal to be shut off too early. To prevent
this premature shut-off, the "Blocking time fine signal" can be defined in milliseconds (ms).
8.22.7 Shut-off correction weight
This parameter enables influences that occur during dosing (e.g. overpressure or
underpressure) to be taken into account in determining when the set point weight is reached.
The setting conforms to the "Parameter relation" setting and can thus be an absolute weight
or a percentage of the set point. The shut-off correction weight currently in effect is always
output in data record 31 in the weight unit.
8.23 DR 24 Controller and filter parameters
8.23.1 Overview
The parameters of the proportional controller and other filter parameters are defined in this
data record.
Table 8- 23 Assignment of data record 24
Variable Note Type Length
(bytes)
RW De-
fault
Min. Max. Modbus
registers
Data record
number
Contains no. of the data record USHORT 2 r 24 - - 1694
Length Data record length information USHORT 2 r 56 - - 1695
Application Information on application to which
DR belongs
USHORT 2 r 105 - - 1696
Version identifier Current data record version infor-
mation
USHORT 2 r 1 1 65535 1697
Parameter rela-
tion (Page 123)
0: Maximum corrective action and
controller deadband in % of set
point in DS 20
1: Specification as absolute values
USHORT 2 rw 0 0 0 1698
Type of control-
ler (Page 123)
0: No controller
1: Proportional controller
USHORT 2 rw 1 0 0 1699
Control factor of
proportional
controller
(Page 123) (%)
for proportional
controller
Control factor of proportional con-
troller
FLOAT 4 rw 30 > 0 0 1700
Reserve Reserve FLOAT 4 rw 0 0 0 1702