Toshiba 48-1250 A ユーザーズマニュアル
TOSHIBA - 16
TX Series
48 - 1250A
THE TX UNIT DEALS WITH POTENTIALLY LETHAL
VOLTAGE LEVELS. YOU MUST BE CERTAIN THAT
PERSONNEL ARE THOROUGHLY TRAINED IN THE
APPLICABLE SAFETY PRECAUTIONS BEFORE
PROCEEDING WITH THIS SECTION!
VOLTAGE LEVELS. YOU MUST BE CERTAIN THAT
PERSONNEL ARE THOROUGHLY TRAINED IN THE
APPLICABLE SAFETY PRECAUTIONS BEFORE
PROCEEDING WITH THIS SECTION!
3.1 Preliminary Start-Up Check List
Please make the following checks before applying power to the unit:
•
•
Supply voltage matches the rated supply voltage of the unit.
•
Horsepower and current ratings of the motor and unit match or the unit has a
higher rating.
higher rating.
•
Initial ramp time and torque adjustments have been checked.
•
Power lines are attached to the unit input terminals marked L1, L2 and L3.
•
Motor leads are connected to the lower terminals marked T1, T2 and T3.
•
Appropriate control power is applied and/or control connections have been
made.
made.
•
The motor’s FLA has been programmed.
•
The thermal overload parameters are properly set.
•
The motor area and equipment are clear of people and parts before start-up.
3.2 Introduction
It is best to operate the motor at its full load starting condition to achieve the
proper time, torque and ramp settings. Initial settings are set to accommo-
date most motor conditions. TRY INITIAL SETTINGS FIRST. See Setpoints
Page 2 to make any adjustments.
proper time, torque and ramp settings. Initial settings are set to accommo-
date most motor conditions. TRY INITIAL SETTINGS FIRST. See Setpoints
Page 2 to make any adjustments.
3.3 Acceleration Adjustments
The unit is set at the factory with typical starting characteristics that perform well
in most applications. When the system is ready to start, try the initial unit
settings. If the motor does not come up to speed, increase the current limit
setting. If the motor does not start to turn as soon as desired, raise the
starting voltage adjustment. Adjustment description and procedures are
described as follows (See section 4.5.2 for additional Accel settings):
in most applications. When the system is ready to start, try the initial unit
settings. If the motor does not come up to speed, increase the current limit
setting. If the motor does not start to turn as soon as desired, raise the
starting voltage adjustment. Adjustment description and procedures are
described as follows (See section 4.5.2 for additional Accel settings):
3.3.1 Starting Voltage
Factory Setting = 20% of line voltage
Range = 0% - 100% of line voltage
Starting voltage adjustment changes the initial starting voltage level to the
motor.
Range = 0% - 100% of line voltage
Starting voltage adjustment changes the initial starting voltage level to the
motor.
3.3.2 Ramp Time
Factory Setting = 10 sec.
Range = 0 - 120 sec.
Ramp time adjustment changes the amount of time it takes to reach the
current limit point or full voltage if the current limit point was not reached.
Range = 0 - 120 sec.
Ramp time adjustment changes the amount of time it takes to reach the
current limit point or full voltage if the current limit point was not reached.
3.3.3 Current Limit
Factory Setting = 350% of unit FLA
Range = 200% - 600% of unit FLA
The current limit adjustment is factory set for 350% of the unit’s rating.
The range of adjustment is 200% to 600%. The main function of current
limit is to cap the peak current. It may also be used to extend the ramp-
ing time if required. The interaction between the voltage ramp and the
current limit will allow the soft start to ramp the motor until the maximum
current is reached and the current limit will hold the current at that level.
Range = 200% - 600% of unit FLA
The current limit adjustment is factory set for 350% of the unit’s rating.
The range of adjustment is 200% to 600%. The main function of current
limit is to cap the peak current. It may also be used to extend the ramp-
ing time if required. The interaction between the voltage ramp and the
current limit will allow the soft start to ramp the motor until the maximum
current is reached and the current limit will hold the current at that level.
Chapter 3 - Start-up
WARNING