Selec ATSEL FD300 User Manual

User Manual
140
User Manual
141
When the PID given changes, the PID set value changes linearly
according to the given change time, which reduces the adverse effect of the
given sudden change on the system.
PID given change time, refers to the time required for the PID reference
value to change from 0.0% to 100.0%.
PA-11
PID given change time
Default：0.00s
0.00～650.00s
PA-12
PID feedback filter time
Default0.00s
0.00～60.00s
PA-13
PID output filtering time
Default0.00s
0.00～60.00s
PA-12 is used to filter the amount of PID feedback. This filtering helps to
reduce the influence of feedback on the feedback, but it will bring the
response performance of the process closed-loop system.
PA-13 is used to filter the PID output frequency, which will attenuate the
sudden change of the inverter output frequency, but it will also bring the
response performance of the process closed-loop system.
PA-15
Proportional gain Kp2
Default：20.0
0.0～100.0
PA-16
Integration time Ti2
Default : 2.00s
0.01s～10.00s
PA-17
Derivative time Td2 Default : 0.000s
0.01s～10.000s
PA-18
PID parameter
switchover condition
Default : 0
0: No switchover
1: Switchover via the
input terminal
2: Automatic switchover
based on deviation
PA-19
PID parameter
switchover deviation 1
Default：20.0%
0.0%～PA-20
PA-20
PID parameter
switchover deviation 2
Default：20.0%
PA-19～100.0%
In some applications, a set of PID parameters cannot meet the
requirements of the entire running process, and different PID parameters
need to be used in different situations. This set of function codes is used for
switching between two sets of PID parameters. The setting of the regulator
parameters PA-15~PA-17 is similar to the parameters PA-05~PA-07.
The two sets of PID parameters can be switched by the multi-function X
terminal, or can be automatically switched according to the deviation of the
PID.
When the multi-function X terminal is selected for switching, the multi-
function terminal function selection should be set to 43 (PID parameter
switching terminal). When the terminal is invalid, select parameter group 1
(PA-05~PA-07). When the terminal is valid, select the parameter group. 2
(PA-15~PA-17).
When automatic switching is selected, the absolute value of the deviation
between the given and feedback is less than the PID parameter switching
deviation 1 PA-19, and the PID parameter selects parameter group 1. When
the absolute value of the deviation between the given and the feedback is
greater than the PID switching deviation 2 PA-20, the PID parameter
selection selects parameter group 2. When the deviation between the given
and feedback is between the switching deviation 1 and the switching
deviation 2, the PID parameter is the linear interpolation value of the two sets
of PID parameters, as shown in Figure 6-29.
PA-21
PID initial value
Default：0.0%
0.0%～100.0%
PA-22
PID initial value hold time Default：0.0s
0.00～650.00s
When the inverter starts, the PID output is fixed to the PID initial value PA-
21. After the PID initial value hold time PA-22, the PID starts the closed-loop
adjustment operation. Figure 6-30 shows the function of the PID initial value.
Figure 6-30 Schematic diagram of PID initial value function
PA-25
PID integral attribute
Default：0.0%
Ones place：Integral separation
0: Invalid 1: Valid
Tens place: Whether to stop
integral operation when the
output reaches the limit
0: Continue to integrate
1: Stop integral operation
Whether to stop integral operation when the output reaches the limit: If
"Stop integral operation" is selected, the PID integral operation stops, which
may help to reduce the PID overshoot.
When the integral separation selection is invalid, the integral separation
is invalid regardless of whether the multi-function digital X is valid or not.
If the integral separation is set to be effective, when the multi-function
digital X-integration pause (function 22) is valid, the integral PID integration
of the PID stops the calculation, and at this time, the PID only proportional
and differential action is effective.
Chapter 6 Chapter 6

Selec ATSEL FD300 Specifications

General

Brand	Selec
Model	ATSEL FD300
Category	DC Drives
Language	English