EC590
Function parameters description
EC590
Function parameters description
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53
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-
54
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Function Code
Parameter Name
Default
FA-12
PID feedback filter time
Setting Range
0.00s
0.00s to 60.00s
FA-13
PID output filter time
0.00s
0.00s to 60.00s
FA-12 filters the PID feedback, which helps to lower interference on PID feedback but slows
system response performance.
FA-13 filters the PID output frequency, which helps to drop off mutation of the AC drive output
frequency but slows system response performance.
Function Code
Parameter Name
Default
FA-15
Proportional gain Kp2
Setting Range
20.0
0.0 to 100.0
FA-16
Integral time Ti2
2.00s
0.01s to 10.00s
FA-17
Differential time Td2
0.000s
0.000s to 10.000s
FA-18
PID parameter switchover
condition
0
0: No switchover
1: Switchover via S
2: Auto switchover based on PID error
3: Auto switchover based on running
frequency
FA-19
PID error 1 for auto
switchover
20.0%
0.0% to FA-20
FA-20
PID error 2 for auto
switchover
80.0%
FA-19 to 100.0%
FA-15 to FA-20: On some applications, switchover to another set of PID parameters may be re
-
quired to fine tune the overall performance as load conditions can vary during the different machine
cycles.
Switchover can be implemented via a S
terminal or automatically implemented according to PID
error level.
Figure 5-10 Switchover of two groups of PID parameters
PID 1
FA-05
、
FA-06
、
FA-07
PID2
FA-15
、
FA-16
、
FA-17
FA-19
FA-20
PID parameters
PID error
Function Code
Parameter Name
Default
FA-21
PID initial value
Setting Range
0.0%
0.0% to 100.0%
FA-22
PID initial value active time
0.00s
0.00s to 650.00s
FA-21 and FA-22: When the AC drive starts, the PID function turns active only after PID output
is fixed at PID initial value (FA-21) for time set in FA-22.
Figure5-11 The PID initial value function
Output
frequency
PID initial value
FA
-
21
PID initial value active time
FA
-
22
Time
Function Code
Parameter Name
Default
FA-25
PID integral property
Setting Range
00
BIT0: Integral separation
0: Disabled
1: Enabled
BIT1: Whether to stop integral
operation
when the PID output
reaches the limit
0: Continue integral operation
1: Stop integral operation
FA-25 determines whether to enable integral separation function and whether to stop integral
operation when PID output reaches limit.
If integral separation is enabled, when a S set for function 38 “PID integral disabled” is on, the
integral operation becomes disabled. At this moment, only the P gain and derivative time take effect.
If integral separation is disabled, no matter whether the S set for function 38 "PID integral disabled"
is on, integral separation is inactive.
