Frequency Reference
6-5
Using Multi-Step Speed Operation
With Varispeed-G7 series Drives, you can change the speed to a maximum of 17 steps, using 16 frequency ref-
erences, and one jog frequency reference.
The following example of a multi-function input terminal function shows a 9-step operation using multi-step
references 1 to 3 and jog frequency selection functions.
Related Parameters
To switch frequency references, set multi-step speed references 1 to 3 and the jog reference selection in the
multi-function contact inputs.
Multi-function Contact Inputs (H1-01 to H1-10)
Combining Multi-Function References and Multi-Function Contact Inputs
You can change the selected frequency reference by combining the ON/OFF status of S4 to S7 (multi-function
contact input terminals) to set multi-step speed references 1 to 3 and the jog frequency selection. The follow-
ing table shows the possible combinations.
* Terminal S8's jog frequency selection is given priority over multi-step speed references.
Terminal
Parameter
Number
Set Value Details
S5 H1-03 3
Multi-step speed reference 1 (Also used for master speed/auxiliary speed switching when
multi-function analog input H3-09 is set to 2 (auxiliary frequency reference).)
S6 H1-04 4 Multi-step speed reference 2
S7 H1-05 5 Multi-step speed reference 3
S8 H1-06 6 Jog frequency selection (given priority over multi-step speed reference)
Speed
TerminalS5 TerminalS6 TerminalS7 TerminalS8
Selected Frequency
Multi-step
Speed
Reference 1
Multi-step
Speed
Reference 2
Multi-step
Speed
Reference 3
Jog
Frequency
Selection
1 OFF OFF OFF OFF Frequency reference 1 d1-01, master speed frequency
2 ON OFF OFF OFF Frequency reference 2 d1-02, auxiliary frequency 1
3 OFF ON OFF OFF Frequency reference 3 d1-03, auxiliary frequency 2
4 ON ON OFF OFF Frequency reference 4 d1-04
5 OFF OFF ON OFF Frequency reference 5 d1-05
6 ON OFF ON OFF Frequency reference 6 d1-06
7 OFF ON ON OFF Frequency reference 7 d1-07
8 ON ON ON OFF Frequency reference 8 d1-08
9- - -
ON
*
Jog frequency d1-17
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