Instruction manual

PARAMETERS

• Use Pr. 21 to set the acceleration/deceleration time and minimum setting

increments:

Set value "0" (factory setting) ........0 to 3600s (minimum setting increments: 0.1s)

Set value "1" ..................................0 to 360s (minimum setting increments: 0.01s)

• When you have changed the Pr. 21 setting, set the deceleration time again. (Note 5)

• Use Pr. 7 and Pr. 44 to set the acceleration time required to reach the frequency set in

Pr. 20 from 0Hz.

• Use Pr. 8 and Pr. 45 to set the deceleration time required to reach 0Hz from the

frequency set in Pr. 20.

• Pr. 44 and Pr. 45 are valid when the RT signal is on. When the RT signal is on, the

other second functions such as second torque boost are also selected.

• Set "9999" in Pr. 45 to make the deceleration time equal to the acceleration time (Pr.

44).

Note:1. In S-shaped acceleration/deceleration pattern A (refer to page 85), the set

time is the period required to reach the base frequency set in Pr. 3.

•Acceleration/deceleration time formula when the set frequency is the base

frequency or higher

T: Acceleration/deceleration time setting (s)

f : Set frequency (Hz)

•Guideline for acceleration/deceleration time at the base frequency of 60Hz

(0Hz to set frequency)

Frequency setting (Hz)

60 120 200 400

Acceleration/

deceleration time (s)

5 5 12 27 102

15 15 35 82 305

2. If the Pr. 20 setting is changed, the settings of calibration functions Pr. 903

and Pr. 905 (frequency setting signal gains) remain unchanged.

To adjust the gains, adjust calibration functions Pr. 903 and Pr. 905.

3. When the setting of Pr. 7, Pr. 8, Pr. 44 or Pr. 45 is 0.03s or less, the acceleration/

deceleration time is 0.04s. At this time, set 120Hz or less in Pr. 20.

4. If the shortest acceleration/deceleration time is set, the actual motor

acceleration/deceleration time cannot be made shorter than the shortest

acceleration/deceleration time determined by the mechanical system's J

(inertia moment) and motor torque.

5. Changing the Pr. 21 setting changes the acceleration/deceleration setting

(Pr. 7, Pr. 8, Pr. 16, Pr. 44, Pr. 45).

When Pr. 21 = "0" and the setting of Pr. 7 = "5.0"s, and if the setting of Pr. 21

is changed to "1", the setting value of Pr. 7 will change to "0.5"s.

t =

(Pr. 3)

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