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Customizing for Your Application 8-5
8.1.4 Frequency Setting via 0 to 20 [mA] Input
8.1.5 Frequency Setting via -10 to +10 V Voltage Input + 0 to 20 mA
Input
Override function allows more precise control and a faster response by combining
Main and Auxiliary speed input. Fast response can be achieved via Main speed and
precise control can be accomplished by Aux. speed if the accuracy of Main/Aux speed
is set differently.
Follow the settings shown in the table below when Main speed is given via 0 to 20mA
with Aux. speed via V1 terminal (–10 to 10V).
Group Code Parameter Name Setting Range Initial Unit
Drive
group
P37 [Frequency Command] - 0 to 400 0.00 Hz
P40 [Frequency Setting Method] 4 1 to 7 1
I/O
group
t45 [Filter Time Constant for I Input] 10 0 to 9999 10
t46 [I Input Minimum Current] - 0 to 20 4 mA
t47 [Frequency Corresponding to I12] - 0 to 400 0.00 Hz
t48 [I input Max Current] - 0 to 20 20 mA
t49 [Frequency Corresponding to I14] - 0 to 400 60.00 Hz
Step 1. Set P40 [Frequency Setting Method] to “4”.
Step 2. Frequency is set via 0 to 20mA input between
I and CM terminal.
Group Code Parameter Name Setting Range Initial Unit
Drive
group
P37 [Frequency Command] - 0 to 400 0.00 Hz
P40 [Frequency Setting Method] 5 1 to 7 1
Step 1. Set P40 [Frequency Setting Method] to “5”.
Step 2. Override function available using Main/Auxiliary speed adjustment
Step 3. Related code: t36, t39, t40, t44, t45, t49