Yaskawa J7 Drive - Manual (Page 45)

5-10
The Drive allows selection of up to eleven frequency references. One is an analog input (terminal
FR), eight are digital presets (selected with multi-function inputs), one is a jog input, and one is via
serial communications (MODBUS).
A. Frequency Reference via Analog Input
In order to set the Drive so the frequency reference comes from the analog input, set parameter
n03 as shown in the table below:
(1) SW8 can be found just above the control circuit terminals. The switch connects a 250 Ω resistor from terminal FR to FC
when set to the “I” position (to the right). NOTE: All power must be removed from the Drive before SW8 can be set.
B. Frequency Reference via Digital Presets
In order to set the Drive so the frequency reference comes from the digital presets, the following
parameters need to be set:
Depending upon how many preset references are required determines the actual settings of n36
thru n39 . Several examples are listed below.
PARAMETER SETTING DESCRIPTION
n21
User
thru
Set
Eight Frequency References, plus jog Frequency
n29
n36
6, 7, Sets the multi-function inputs so selection of the various references is
thru
and/or 8 possible with contact closures.
n39
PARAMETER SETTING DESCRIPTION
2 Sets terminal FR for a voltage input (0 to 10V) Set SW8 to “V” (Off) (1)
n03 3 Sets terminal FR for a current input (4 to 20mA) Set SW8 to “I” (1)
4 Sets terminal FR for a current input (0 to 20mA) Set SW8 to “I” (1)
5.11 FREQUENCY REFERENCE SELECTION