Chapter 5 Instruction Words
5 - 32
Variable name Range of values Default Unit Data size Attribute
DECEL
Deceleration time
setting
0 to 360000 0
0.01
second
Unsigned
2-word data
Readable
and writable
- Explanation
This variable can be used to read and write the motor deceleration time in the inverter. The deceleration
time setting using this variable is enabled only when the setting of accel/decel time input selection
(P031) is "03" (PRG). (The setting of this variable does not correspond to the setting of inverter
parameter "F003".) The data written to this variable is not stored in the inverter's EEPROM. This
variable will restore the initial setting when the inverter power is turned off.
Note 1: When "0" is set in this variable, the acceleration time follows the deceleration (1) time setting
"F003", "F203", or "F304".
Note 2: When a program writes a value to this variable, the value is reflected in the inverter in a 40-ms
cycle, which conforms to the standard inverter specifications.
- Sample program: Program to change the deceleration time according to output frequency
(Code area [Code Window])
：
DECEL= 3000 : Set the deceleration time to 30 seconds.
FW= 0 : Start deceleration of the motor.
wait FM < U(04) : Wait until the output frequency falls below 55
Hz.
DECEL= 1000 : Change the deceleration time to 10 seconds.
wait FM < U(03) : Wait until the output frequency falls below 50
Hz.
DECEL= 500 : Change the deceleration time to 5 seconds.
wait FM < U(02) : Wait until the output frequency falls below 30
Hz.
DECEL= 1000 : Change the deceleration time to 10 seconds.
wait FM < U(01) : Wait until the output frequency falls below 10
Hz.
DECEL= 3000 : Change the deceleration time to 30 seconds.
wait FM < U(00) : Wait until the output frequency falls below 5 Hz.
DECEL= 6000 : Change the deceleration time to 60 seconds.
wait RUN = 0 : Wait until the motor stops.
Y(01)= 1 : Turn Y (00) on when acceleration ends.
：
(Data area [Data Window])
U(00) 500 : Set the frequency of 5 Hz in variable "U (00)".
U(01) 1000 : Set the frequency of 10 Hz in variable "U (01)".
U(02) 3000 : Set the frequency of 30 Hz in variable "U (02)".
U(03) 5000 : Set the frequency of 50 Hz in variable "U (03)".
U(04) 5500 : Set the frequency of 55 Hz in variable "U (04)".
U(05) 6000 : Set the frequency of 60 Hz in variable "U (05)".
(Parameter)
P031 = 03
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