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9. Parameter data
Explanation of parameters for VF-AS1 series is described here. For communication purposes, see
the parameter list on inverter's instruction manual regarding the communication number, adjustment
range and so forth.
Referring to the parameter list
<Example of excerpts from the inverter’s instruction manual>
Title Communi-
cation No. Function Adjustment range
Minimum set-
ting unit
(Panel/Communi
cation)
Default
setting
Write during
running
Refer-
ence
auh - History function 1/1 -- 5.1
au1 0000 Automatic accelera
-
tion/deceleration
0:Deselect
1:Automatic setting
2:Automatic setting (during
acceleration only)
1/1 0 Disabled 5.2
au2 0001 Automatic torque
boost
0:Deselect
1:Automatic torque boost +
auto-tuning 1
1/1 - Disabled 5.3
acc 0009 Acceleration time
1
0.1~6000 sec. 0.1/0.1 *2 *1 Enabled 5.2
typ 0007 Factory default
setting
0: -
1:50 Hz default setting
2:60 Hz default setting
3:Factory default setting
10:Acceleration/deceleration
time setting 0.01
sec.~600.0 sec.
11:Acceleration/deceleration
time setting 0.1
sec.~6000sec.
1/1 - Disabled 5.20
*1: Default values vary depending on the capacity.
*2: Changing the parameter  enables to set to 0.01 sec. (adjustment range: 0.01~600.0 sec.).
- The summary of parameter list relating to the communication is as follows.
(1) “Title” means the display on the inverter panel.
(2) “Communication number” is affixed to each parameter that is necessary for designating the parameter for com-
munication.
(3) "Adjustment range" means a data range adjustable for a parameter, and the data cannot be written outside the
range. The data have been expressed in the decimal notation. For writing the data through the communication
function, take the minimum setting unit into consideration, and use hexadecimal system.
(4) "Minimum setup unit" is the unit of a single data (when the minimum unit is "-", 1 is equal to 1).
For example, the "minimum setup unit" of acceleration time () is 0.01, and 1 is equal to 0.01s. For setting a
data to 10 seconds, transmit 03E8h [10 0.01=1000d=03E8h] by communication.

(5) If FA09 is set to 0, the acceleration/deceleration time parameters acc, dec, f500, f501, f510,
f511, f514, and f515 can be set in units of 0.01 sec.
Q　Acceleration/deceleration setting time unit (FA09)
Communication No. Function name Unit Adjustment range
FA09 Acceleration/deceleration time unit －0: 0.01 sec. (0.01-600.0)
1: 0.1 sec. (0.1-6000.0)
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