Toshiba VF-AS1 Basic parameters, Using the V/f adjustment function Adjustment rate

E6581301

6.3.5Response time of input/output terminals!

￿￿￿￿: Input terminal 1 response time selection

￿￿￿￿: Input terminal 2 response time selection

￿￿￿￿: Input terminal 3 response time selection

￿￿￿￿: Input terminal 4 response time selection

￿￿￿￿: Input terminal 5~12 response time selection

￿￿￿￿: Input terminal 13~20 response time selection

￿For details, refer to Section 7.2.3.

The output terminal and the response time can be set with “My function.”

￿For details, refer to Section 6.39.

6.3.6Using the V/f adjustment function

￿￿￿￿: V/f adjustment rate

•Function

This parameters reduces the ratio of ￿￿￿(base frequency vortage 1) / ￿￿(base frezuency 1) by selecting V/f ratio switching (input terminal function 152(positive logic) or 153(negative logic)).

V/f ratio switching (input terminal function 152/153) OFF: Original V/f (￿￿￿ / ￿￿)

V/f ratio switching (input terminal function 152/153) ON: Original V/f "￿￿￿￿

[Parameter setting]

Title	Function	Adjustment range	Default setting
￿￿￿￿￿	V/f adjustment rate	￿~￿￿￿%	￿￿￿￿
Note 1: This function is only effective in the case of ￿￿=0,1.
Note 2: In the case of Overvoltage stall protection is effective, set ￿￿￿￿=0.

6.4Basic parameters 2

6.4.1Switching among V/f characteristics 1, 2, 3 and 4 from input terminal!

￿￿￿￿	: Base frequency 2	￿￿￿￿	: Manual torque boost 3￿
￿￿￿￿	: Base frequency voltage 2	￿￿￿￿	: Thermal protection level 3￿
￿￿￿￿	: Manual torque boost 2	￿￿￿￿	: Base frequency 4￿
￿￿￿￿	: Thermal protection level 2	￿￿￿￿	: Base frequency voltage 4￿
￿￿￿￿	: Base frequency 3￿	￿￿￿￿	: Manual torque boost 4￿
￿￿￿￿	: Base frequency voltage 3	￿￿￿￿	: Thermal protection level 4

• Function

Use the above parameters to switch the operation of 4 motors with a single inverter and to select motor V/f characteristics (1 to 4) according to the particular needs or operation mode.

[Switching methods]

Terminals are used for this switching.

Note:The setting of parameter ￿￿ (V/f control mode selection) is valid only when V/f1 is selected. If V/f2,V/f3 or V/f4 is selected, V/f control is performed in constant torque mode. Do not switch motors when the parameter ￿￿ (V/f control mode selection) is set at ￿, ￿. For parameters selected when changing V/f characteristics (1 to 4), refer to table on the next page.

Note: Refer to Section 5. 8 ￿￿ (Base frequency 1) for ￿￿￿￿, ￿￿￿￿ and ￿￿￿￿, Section 5. 8 ￿￿￿ (Base frequency voltage 1) for ￿￿￿￿, ￿￿￿￿ and ￿￿￿￿, Section 5.7 ￿￿ (Manual torque boost) for ￿￿￿￿, ￿￿￿￿ and ￿￿￿￿,

and Section 5.14 ￿￿￿ (Motor electronic thermal protection level 1) for ￿￿￿￿, ￿￿￿￿ and ￿￿￿￿, respectively.

F-9

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