Appendix 1: Ramp Profile Details - Toshiba TE2 Series Instruction Manual

Appendix 1 - Ramp Profile Details
Ramp 1 Settings
Initial
Ramp
Torque
Type
from...
Voltage F011
Current F012
Voltage F011
Current F012
Table APP 1.1: Ramp Selection Choices and Settings
Initial Torque
Ramp Time
Time
Figure APP 1.1:
Voltage Ramp w/o Current Limit
Initial Torque
Ramp Time
Time
Figure APP 1.2:
Voltage Ramp with Current Limit
TE2 Series Digital Solid State Soft Starter User Manual
The TE2 Series offers four different types of starting ramp profiles.
Simply select the one that best matches your motor / load requirements.
In addition, two separate ramps are available that can be selected via
contact closure (see section 4.2.5.a), and each one can be set up for
any ramp type as shown in the table below.
Ramp Current
Time Limit
from... from...
F013 F014
F013 F014
F013 F014
F013 F014
Following are descriptions of the four types of Ramp Profiles
1. Voltage Ramping is the most reliable starting method, due to the fact
Full Speed
that at some point the starter will reach an output voltage high enough
to allow the motor to draw full current and develop full torque. This
method is useful for applications where the load conditions change
frequently and significantly enough to require different levels of starting
torque. Examples where this is effective are:
 Material handling conveyers
 Positive displacement pumps
 Drum mixers, grinders etc.
Voltage is increased from a starting point (Initial Voltage) to full voltage
over an adjustable time period (Ramp Time). To achieve Voltage
Ramping, set the Ramp Profile (F010) to 0001 or 0003 (Voltage Ramp),
and the Maximum Current Limit setting (F014) to maximum (600%).
2. Voltage Ramping with Current Limit works similar to mode 1,
except this mode adds an adjustable maximum current output. Voltage
Full Speed
is increased gradually until the motor current reaches the Maximum
Current Limit setting (F014). The motor current is held at this level until
the motor accelerates to full speed. When the motor current drops
below the limit setting, the output voltage is automatically increased until
the TE2 Series is At-Speed. This may be necessary in applications
Current
Limit Setting
where the electrical power is limited. Examples would be:
 Portable or emergency generator supplies
 Utility power near the end of a transmission line or other starting
power demand restrictions.
Using Current Limit will override the Ramp Time setting if necessary, so
use this feature when acceleration time is not critical. The Ramp Time
setting; however, still determines the slope of the ramp up to the Current
Limit setting to apply the softest possible acceleration. To achieve
Voltage Ramping with Current Limit, set the Ramp Profile (F010) to
0001 or 0003 (Voltage Ramp), and the Maximum Current Limit setting
(F014) to a desired lower setting, as determined by your application
requirements.
"Ramp Type
Selection"
Ramp
from F010
Type
1 Voltage
2 Current
3 Current
4 Voltage
Ramp 2 Settings
Ramp
Initial
Time
Torque
from...
from...
F015 F017
F016 F017
F016 F017
F015 F017
71 | P a g e
Current
Limit
from...
F018
F018
F018
F018