Omron SYSDRIVE 3G3RV, User Manual, Page: 223 / 446

Frequency Reference
6-
7
n
Inputting the Frequency Reference Using Voltage (Analog Setting)
When
b1-01 is set to 1, you can input the frequency reference from control circuit terminal A1 (voltage input),
or
control circuit terminal A2 (voltage or current input).
Inputting Master Speed Frequency Reference Only (Asian Model)
If
inputting the master speed frequency reference only, input the voltage reference to control circuit terminal
A1.
Fig 6.4 Master Speed Frequency Reference Input
2-Step Switching: Master/Auxiliary (Asian Model)
If
performing 2-step switching between master and auxiliary speed frequencies, input the master speed fre-
quency
reference to control circuit terminal A1, and input the auxiliary speed frequency reference to A2.
When
terminal S3 (multi-step speed command 1) is OFF, terminal A1 (master speed frequency reference) will
be
the Inverter frequency reference, and when terminal S3 is ON, terminal A2 (auxiliary speed frequency ref-
erence)
will be the Inverter frequency reference.
Fig 6.5 Master/Auxiliary Frequency Reference Input
Setting Precautions
When
inputting a voltage signal to terminal A2, observe the following precautions.
•
Turn
OFF pin 2 on DIP switch S1 for switching between voltage and current (factory setting is ON).
Inverter
A1 (Master speed frequency
reference)
+V (Power supply: 15 V,
20 mA)
A2 (Auxiliary speed frequency
reference)
AC (Analog common)
2 k
Ω
(2 W)
(2 W)
0 to 10 V
input
Inverter
+V (Power supply: 15 V,
20 mA)
A1 (Master speed frequency
reference)
0 to 10 V input
DIP switch S1
SC Sequence common
S3 Multi-step speed
command 1
Master/
Auxiliary
A2 (Auxiliary speed frequency
reference)
AC (Analog common)