Sourcetronic ST500 Series - Appendix V product application case; V-11. Air compressor constant pressure control (sensor for two-wire pressure transmitter)

Appendix V
166
Appendix
V
V-3 External frequency and current display
V-3-1 Electrical Diagram:
0 ~+10VDC
(Default)
0 ~+10V
Analog voltagemeter
380/400V 50/60Hz
Three phaseinputpower supply
Circuit breaker
Motor
M
%
M
FWD/STOP
REV/STOP
Faultreset
0 ~20mA DC
(Default)
External frequency meter and ammeter
4
~
20mA
Analog ampere meter
ST500
Standard default output: DA1 default 0 ~ 10V; DA2 default 4 ~ 20mA.
V-3-2 Connection:
The voltage meter showing the frequency is connected to the DA1 and GND
terminals of the inverter, and the ammeter is connected to the DA2 and GND terminals.
V-3-3 parameter setting:
When the system requires the drive DA1 0-5V signal output, you need to set the parameters as
follows:
No.
Code
Parameter name
Setting range
F2.07
DA1output function selection
Running frequency
0
F2.16
DA1 zero bias coefficient
-100.0% ~ +100.0%
0%
F2.17
DA1 gain
-10.00 ~ +10.00
0.50
Note: DA1 jumper cap on drive control board needs to be shorted to V terminal.
When the system requires DA2 to provide 4-20mA signal output, the following parameters need
to be set:
No.
Code
Parameter name
Setting range
F2.08
DA2 output function selection
output current
2
F2.18
DA2 zero bias coefficient
-100.0% ~ +100.0%
20.0%
F2.19
DA2 gain
-10.00 ~ +10.00
0.80
Note: The DA2 jumper cap on the control board of the inverter needs to be shorted to I terminal.