4–39
Frequency Output (FO) Scaling Factor
Default Setting: 1
Range: 1 to 20
This parameter determines the scaling factor that is used to scale the frequency at
the Digital Frequency Output terminals (FO-DCM). The number of output pulses
per second is equal to the AC drive output frequency multiplied by P3.30.
(Pulse per second = actual output frequency x P3.30).
Example 1: When drive frequency is 60.0 Hz and P3.30 = 10;
60.0 Hz x 10 = 600.0 Hz;
Frequency of FO’s outputted square wave is 600.0 Hz
Example 2: When drive output frequency = 400.0 Hz and P3.30 = 20
400.0Hz x 20 = 8kHz;
FO’s output frequency is 8kHz.
FO is an open collector circuit. Square wave is generated, for example, by
sending +24V through a 4.7 k⏲ resistor as shown in the diagram below.
2nd Source of Operation Command Default Setting: 00
Settings:
00 Operation Determined by Digital Keypad
01 Operation determined by external control terminals.
Keypad STOP is enabled.
02 Operation determined by external control terminals.
Keypad STOP is disabled.
03 Operation determined by RS-485 communication interface.
Keypad STOP is enabled.
04 Operation determined by RS-485 communication interface.
Keypad STOP is disabled.
This parameter sets the second input source for the AC drive operation command.
• Select the 1st or 2nd sources with a Digital Input and the appropriate parameter
settings for P3.02 through P3.10.
• This parameter is available only with AC drive firmware v1.04 or higher.
Refer to P9.39 to determine the drive’s firmware version.
P3.31
To Next Page
Loading...