Chapter 5 Function parameter
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Ch
ap
ter 5
When multi-stage command operation mode is selected, the different input state combination of
DI terminal correspond to the different set frequency value. ST500 can set up more than 4 multi-
stage command terminals and 16 statuses, and any 16 "multi-stage commands "can be achieved
correspondence through E1 group function code, the "multi-stage command" refers to the percent
of F0.19 relative to maximum frequency.
Under the mode, DI terminal function in F1 group parameters will be required to set as the
multi-stage command.
7: Simple PLC program setting
Under the mode, the inverter operating frequency source can be switched between 1 to 16 any
frequency commands, the user can set hold time and ac/deceleration time for 1 to 16 frequency
command , the specific content refers to the related E1 group instructions.
8: PID control setting
Select process PID control output as the operating frequency. Generally it is used for closed-
loop control, such as constant pressure closed-loop control, constant tension closed-loop control
and other occasions.
Select PID as the frequency source, you need to set E2 group "PID function" parameters.
9: Remote communications setting
ST500 supports Modbus communication. Communication card must be installed when using
the function.
10: Analog AI3 input, voltage input range -10v~+10v.
F0.04
Frequency
source
auxiliary
setting
Keyboard set frequency (F0.01, UP/DOWN can be
modified, power-down without memory)
0
2
★
Keyboard set frequency (F0.01, UP/DOWN can be
modified, power-down with memory)
1
Analog AI1 setting
2
Analog AI2 setting
3
Panel potentiometer setting
4
High-speed pulse setting
5
Multi-speed operation setting
6
Simple PLC program setting
7
PID control setting
8
Remote communications setting
9
Analog AI3 input, voltage input range -10v ~ +10v
10
The instructions for use refers to F0.03.
When the frequency source auxiliary setting is used as overlays reference (select frequency
source as auxiliary , master to auxiliary or auxiliary to auxiliary ), you
need to pay attention to:
1) When the frequency source auxiliary setting is set to digital reference, the preset frequency
(F0.01) does not work, user can adjust frequency by using ▲,▼ keys (or multi-function input
terminals UP, DOWN) on the keyboard, adjust directly on the basis of master frequency source.
2) When the frequency source auxiliary setting is set to analog input reference (AI1, AI2,
panel potentiometer) or pulse input reference, the frequency source auxiliary setting range for the
set 100% can be set by F0.05 and F0.06.
3) When the frequency source is set to pulse input reference, it is similar to analog reference .
Tip: Both master and auxiliary setting of frequency source can not be set in the same channel, ie
F0.03 and F0.04 can not be set as the same value, otherwise easily lead to confusion.
F0.05
Reference object selection
for frequency source
auxiliary setting
Relative to maximum frequency
0
0
☆
Relative to master frequency source A
1
Relative to master frequency source 2
2
F0.06
Frequency source
auxiliary setting range
0% to 150%
100%
☆
When the frequency source is set to "frequency overlay"(i.e. F0.07 is set to 1, 3 or 4), these
two parameters are used to determine the range of adjustment of frequency source auxiliary
