Toshiba 18 - 1250 A Instruction Manual page 47

TE Series Digital Solid State Soft Starters 18 – 1250A
5.6.2.a Ramp 2 (user-optional ramp)
This ramp is selected by closing the input for Ramp 2, TB1 –
terminals 5 & 6 (see section 4.2.5). If this input is left open, the TE
Series will respond only to Ramp 1 settings as listed above. Since
ramp 2 is always used as an alternate to the default Ramp 1,
different combinations of ramp profiles can be selected in F010.
Refer to Appendix 1 for additional information on ramp profiles.
F015 = Initial Torque (Voltage) of Ramp 2
Factory Setting = 60%
Range = 0 - 100%
Sets the initial voltage of Ramp 2 when F010 = 1 or 4. The
initial torque level should be set to provide just enough torque to
make the motor shaft begin to rotate while preventing torque
shock damage to mechanical components.
F016 = Initial Torque (Current) of Ramp 2
Factory Setting = 200%
Range = 0 - 600%
Sets the initial current of Ramp 2 when F010 = 2 or 3. The initial
torque level should be set to provide just enough torque to
make the motor shaft begin to rotate while preventing torque
shock damage to mechanical components.
F017 = Accel Ramp Time of Ramp 2
Factory Setting = 10 seconds
Range = 1 - 120 seconds
Sets the time between the initial torque (set with F015 or F016)
and either the Max Current Limit (set with F018) or full output
voltage. Set time to enable soft starts without stalls. Also
consider your motor's application. For example, centrifugal
pumps may require a shorter time. See NOTE under F013 for
more details.
F018 = Max Current Limit of Ramp 2
Factory Setting = 350%
Range = 200 - 600%
Sets the maximum motor current that the TE Series starter will
allow during ramp 2. (This limit applies to both voltage and
current-type ramping.) Current will be limited to this setting until
either the motor reaches full speed or the over load protection
feature trips (F003).
NOTE:
Ramp 2 is often useful as a "bump start" or as a temporary Across-
the-Line start mode. Consult Appendix 1 for details.
40