Frequency Reference
6-7
îš„Inputting the Frequency Reference Using Control Circuit Terminal (Analog Setting)
When b1-01 is set to 1, you can input the frequency reference from control circuit terminal A1 (voltage input),
control circuit terminal A2 (voltage or current input)
Inputting Master Speed Frequency Reference Only (Voltage Input)
When inputting a voltage for the master speed frequency reference, input the voltage to control circuit termi-
nal A1.
Fig 6.4 Voltage Input for Master Speed Frequency Reference
Inputting Master Speed Frequency Reference Only (Current Input)
When inputting a current for the master speed frequency reference, input the current to control circuit terminal
A2, input 0 V to terminal A1, and make either of the following settings.
• Set H3-08 (Multi-function analog input terminal A2 signal level selection) to 2 (current input), and set H3-
09 (Multi-function analog input terminal A2 function selection) to 0 ( Add to terminal A1).
• Set H3-09 (Multi-function analog input terminal A2 function selection) to 2 (Auxiliary frequency refer-
ence 1), and set H3-13 (Terminal A1/A2 switching) to 1 (Use terminal A2 analog input as the main speed
frequency reference).
Fig 6.5 Current Input for Master Speed Frequency Reference
IMPORTANT
Turn ON pin 2 of DIP switch S1 (toward I), the voltage/current switch, when inputting a current to terminal A2.
Turn OFF pin 2 of DIP switch S1 (toward V), the voltage/current switch, when inputting a voltage to terminal
A2. Set H3-08 to the correct setting for the type of input signal being used.
or control circuit terminal A3 (voltage input).
Inverter
A1
A2
A3
Master speed frequency
reference
(voltage input)
Master speed frequency
reference
(current input)
Not used
AC
Analog common
2 kΩ
+V Power supply: 15 V,
20 mA
Inverter
A1
A2
A3
Master speed frequency
reference
(voltage input)
Master speed frequency
reference
(current input)
Not used
AC
Analog common
+V
4 to 20-mA input
DIP switch
S1
IV
1
2
Power supply: 15 V,
20 mA
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