5.Description of Function Codes
EM15 User's Manual
82
C0-22
Maximum negative deviation between two PID outputs
Default
1.00%
Setting Range
0.00%~100.00%
This function is used to limit the deviation between two PID outputs (2 ms per PID output) to suppress the rapid
change of PID output and stabilize the running of the frequency inverter.
C0-21 and C0-22 respectively are corresponding to the maximum absolute value of the output deviation in
forward direction and in reverse direction.
C0-23
PID feedback filting time
Default
0.00s
Setting Range
0.00s~60.00s
C0-24
PID output filting time
Default
0.00s
Setting Range
0.00s~60.00s
C0-23 is used to filter the PID feedback, helping to reduce interference on the feedback but slowing the response of
the process closed-loop system.
C0-24 is used to filter the PID output frequency, helping to weaken sudden change of the frequency inverter output
frequency but slowing the response of the process closed-loop system.
C0-25
Detection value of PID feedback loss
Default
0.0%
Setting Range
0.0%: Not judging feedback loss 0.1%~100.0%
C0-26
Detection time of PID feedback loss
Default
0.0s
Setting Range
0.0s~20.0s
These parameters are used to judge whether PID feedback is lost.
If the PID feedback is smaller than the value of C0-25 and the lasting time exceeds the value of C0-26, the frequency
inverter reports Err31 and acts according to the selected fault protection action.
C0-27
PID operation at stop
Default
1
Setting
Range
0
No PID operation at stop
1
PID operation at stop
It is used to select whether to continue PID operation in the state of stopping. Generally, to set the PID operation stops
when the frequency inverter stops.
5.15 Group C1:Multi-function
The Multi-function of EM15has many functions. Besides multi-speed, it can be used as the setting source of the V/F
separated voltage source and setting source of process PID. In addition, the Multi-function is relative value.
The simple PLC function is different from the EM15 user programmable function. Simple PLC can only complete
simple combination of Multi-function.
C1-00
Multi-function 0
Default
0.0%
Setting Range
-100.0%~100.0%
C1-01
Multi-function 1
Default
0.0%
Setting Range
-100.0%~100.0%
C1-02
Multi-function 2
Default
0.0%
Setting Range
-100.0%~100.0%