F504, F505 – Toshiba H9 User Manual

Page 175

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H9 ASD Installation and Operation Manual

167

Acc/Dec Pattern 1 – 4

Program

⇒

Special

⇒

Acc/Dec Special

Four Acceleration times and four Deceleration times may be set up and run
individually. Accel/Decel Time #1 – #4 may be selected using this parameter
setting or switched via threshold frequencies, or by discrete input terminal.

This parameter is used to select one of the four configured accel/decel profiles
to be used.

Settings:

1 — Acc/Dec #1
2 — Acc/Dec #2
3 — Acc/Dec #3
4 — Acc/Dec #4

Each Accel/Decel selection is comprised of an Acceleration Time,
Deceleration Time, and a Pattern selection. Selection 1, 2, and 3 have a
Switching Frequency setting. The Switching Frequency is used as a threshold
frequency that, once reached, the ASD switches to the next higher Acc/Dec
selection (i.e., 1 to 2, 2 to 3, or 3 to 4). Switching Frequency settings are also
used during deceleration. A switching frequency setting is not required for

Acc/Dec #4.

Acc/Dec #1 is set up using parameters

(Acc Time),

(Dec Time),

(Pattern), and

(Switching Frequency).

Acc/Dec #2 is set up using parameters

(Acc Time),

(Dec Time),

(Pattern), and

(Switching Frequency).

Acc/Dec #3 is set up using parameters

(Acc Time),

(Dec Time),

(Pattern), and

(Switching Frequency).

Acc/Dec #4 is set up using parameters

F514

(Acc Time), and

F515

(Dec Time),

F516

(Pattern).

This parameter (

F504

) is used to manually select Acc/Dec #1 – #4.

To switch using the Terminal Board, assign the functions Acc/Dec Switching
1 and Acc/Dec Switching 2 to two discrete input terminals. Activation
combinations of the two terminals result in the Acc/Dec #1 – #4 selections as
shown in

Table 4

Figure 30

shows the setup requirements and the resulting output frequency

response when using Switching Frequency settings to control the Acc/Dec
response of the ASD output.

While operating using S-Pattern 1 the system performance may be further
enhanced by the adjustment of parameters

F506

–

F509

. These settings provide

for upper and lower Acc/Dec limit adjustments. These settings are used to
extend or shorten the upper or lower Acc/Dec curve.
If operating from the Local mode, press Esc from the Frequency Command
screen to access this parameter.

Direct Access Number — F504

Parameter Type — Selection List

Factory Default — 1

Changeable During Run — Yes

Table 4.

Figure 30. Using Acc/Dec Switching.

Accel/Decel Switching Frequency 1

Program

⇒

Special

⇒

Accel/Decel Special

This parameter sets the frequency at which the acceleration control is switched
from the Accel #1 profile to the Accel #2 profile during a multiple-acceleration
profile configuration.

Direct Access Number — F505

Parameter Type — Numerical

Factory Default — 0.00

Changeable During Run — Yes

Minimum — 0.00

Maximum — Max. Freq. (

F011

)

Units — Hz

Using combinations of discrete terminal
activations Accel/Decel profiles 1–4 may
be selected

Acc/Dec Switching Truth

A/D SW 1