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When this setting mode is selected, the following parameters shall be set beforehand:
1) Define the function of two external control terminals as 14 and 15 respectively among parameters
P09.00~P09.05.
2) With the function code P09.09, set the value change rate when setting the frequency with the
UP/DOWN terminal.
When the digital reference mode 2 is selected, the wiring diagram is as shown in Fig. 6-7:
Fig. 6-7 Wiring diagram for the mode of digital reference 2
If the terminal is closed validly, the relationship between the status setting combination of two external
switches and current set frequency of the drive is as shown in Table 6-3.
Table 6-3 Status of external switches and current set frequency of the drive
Terminal UP on-off status Off On
Terminal DOWN on-off status Off On Off On
Current set frequency of the drive Maintain Decrease Increase Maintain
2: Digital reference 3, serial port communication reference
Change the set frequency via the serial port frequency setting command.
3: AI analog reference
The analog reference has 2 independent physical channels: AI1, AI2
AI is the analog signal input channel. When AI is the voltage signal input, its voltage input range is
-10V~0V~+10V. The specifications for the analog input signal (-10V~0V~+10V) after adjustment are as
follows:
For the segment 0V~+10V (FWD), the corresponding frequency can be defined in the function code of
Group P10.
For the segment 0V~-10V (REV), the corresponding frequency can be defined in the function code of
Group P10.
4: Terminal pulse (PULSE) reference
The frequency setting is confirmed by the terminal pulse frequency and can be input by X6 only, please
refer to definition in the function code of Group P09 for details.
5: Simple PLC running
The frequency setting is confirmed by the simple PLC program. When the drive is powered on, it will use
the value of the function code of P13.01 as the current set frequency directly.
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