Toshiba G7 Instruction Manual

TOSHIBA
G7APPLICATION GUIDELINE 8.0
*For additional assistance, please contact Toshiba Adjustable Speed Drive Marketing Dept. at [phone]
Configuring Analog Inputs
Introduction
The G7 allows several parameters to be controlled by either a 4-20[mA] or 0-10[V] analog input.
These parameters include upper limit frequency, acceleration/ deceleration time, and torque boost.
This application note will walk you through all of the steps necessary to configure the G7’s analog
inputs. The functioning of the controlled parameters will also be discussed.
Before starting, you should consider that several parameters might be controlled by a single input.
Care should be taken to ensure that only the desired parameters are being controlled by the analog
inputs, and that these parameters are being controlled in the appropriate manner
Connections
Programming
Parameter Location Default Value New Value
Upper Limit Frequency
Adjustment
Program →Terminal Selection
Parameters →Analog Input Functions Disabled Use RR*
Acceleration Time Adjustment Program →Terminal Selection
Parameters →Analog Input Functions Disabled Use RR*
Deceleration Time Adjustment Program →Terminal Selection
Parameters →Analog Input Functions Disabled Use RR*

TOSHIBA
G7APPLICATION GUIDELINE 8.0
*For additional assistance, please contact Toshiba Adjustable Speed Drive Marketing Dept. at [phone]







−
][10
][
][24
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*V
VX
Or
mA
mAX
UL
Torque Boost Adjustment Program →Terminal Selection
Parameters →Analog Input Functions Disabled Use RR*
* The VI/II input terminal can also be used.
Notes
For upper limit frequency the analog input will limit the upper limit frequency in the range 0 - UL[Hz]. If
the analog input receives 4[mA] or 0[V], the upper limit frequency will be 0[Hz]. If the analog input
receives 20[mA] or 10[V] the upper limit frequency will be set by Upper Limit in Program →
Fundamental Parameters →Frequency Settings. Intermediate inputs will result in a linear setting of
the upper limit frequency by the formula
Upper limit Frequency =
Where X is the input analog input in either mili-Amps or Volts. Note: accel/decel times are still
calculated with reference to Maximum Frequency.
Acceleration/Deceleration Time Adjustment - The analog input will determine a multiplier to the
Accel/Decel #1 parameters set in Program →Fundamental Parameters →Accel/Decel #1 Settings.
With a minimum input resulting in a multiplier of 1 and a maximum input resulting in a multiplier of 10
with intermediate inputs giving a linear multiplier between 1 and 10.
Torque Boost Adjustment – The analog input will determine the percentage of Torque Boost that the
drive will output at low speeds in a manner similar to that mentioned in the description of upper limit
frequency discussed above.